WO2013094668A1 - 非水電解質二次電池 - Google Patents
非水電解質二次電池 Download PDFInfo
- Publication number
- WO2013094668A1 WO2013094668A1 PCT/JP2012/083006 JP2012083006W WO2013094668A1 WO 2013094668 A1 WO2013094668 A1 WO 2013094668A1 JP 2012083006 W JP2012083006 W JP 2012083006W WO 2013094668 A1 WO2013094668 A1 WO 2013094668A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- negative electrode
- mass
- battery
- electrode active
- electrolyte secondary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0034—Fluorinated solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
- H01M2300/0042—Four or more solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention provides an initial battery thickness when metallic silicon (Si) or silicon oxide (SiOx) is mixed with a graphite material and used as a negative electrode active material.
- the present invention relates to a nonaqueous electrolyte secondary battery in which increase is suppressed and cycle characteristics are excellent.
- Non-aqueous electrolyte secondary batteries such as these have been increasingly used.
- non-water storage battery systems such as photovoltaic power generation and wind power generation are also used for stationary storage battery systems such as applications for suppressing output fluctuations and grid power peak shift applications for storing power during the daytime.
- the use of electrolyte secondary batteries is increasing.
- Such a non-aqueous electrolyte secondary battery is generally manufactured as follows. That is, a negative electrode plate in which a negative electrode mixture containing a negative electrode active material is applied to both surfaces of a current collector made of a conductive metal foil made of a long and thin sheet-like copper foil, and a positive electrode made of a long and thin sheet-like aluminum foil A separator made of a microporous polyethylene film or the like is disposed between a positive electrode plate coated with a positive electrode mixture containing a positive electrode active material on both sides of the current collector, and the negative electrode and the positive electrode are insulated from each other by the separator.
- a cylindrical wound electrode body is produced by spirally winding around a cylindrical winding core.
- the cylindrical wound electrode body is further crushed with a press to be molded into a shape that can be inserted into the prismatic battery outer package.
- these cylindrical or rectangular wound electrode bodies are accommodated in the corresponding battery casings, respectively, and a nonaqueous electrolyte is injected to form a nonaqueous electrolyte secondary battery.
- carbonaceous materials such as graphite and amorphous carbon have a discharge potential comparable to that of lithium metal or lithium alloy, but dendrite grows. Therefore, it is widely used because it has excellent properties such as high safety, excellent initial efficiency, good potential flatness, and high density.
- a negative electrode active material made of a carbon material lithium can only be inserted up to the composition of LiC 6 and the theoretical capacity is 372 mAh / g, which is an obstacle to increasing the capacity of the battery. Yes.
- a nonaqueous electrolyte secondary battery using silicon or silicon alloy or silicon oxide alloyed with lithium as a negative electrode active material having high energy density per mass and volume has been developed.
- silicon can insert lithium up to the composition of Li 4.4 Si
- the theoretical capacity is 4200 mAh / g, and a capacity much larger than that when a carbon material is used as the negative electrode active material can be expected.
- silicon or a silicon alloy, silicon oxide, or the like is used as the negative electrode active material of the non-aqueous electrolyte secondary battery, the negative electrode active material undergoes large expansion / contraction as the charge / discharge cycle progresses.
- the cycle characteristics of the battery deteriorate, and various improvements have been made to solve these problems.
- Patent Document 1 contains, as a negative electrode, a material containing silicon and oxygen as constituent elements (provided that the element ratio x of oxygen to silicon is 0.5 ⁇ x ⁇ 1.5) and graphite. And the ratio of the material containing silicon and oxygen as constituent elements is 3 to 20 when the total of the material and graphite containing silicon and oxygen as constituent elements is 100 mass%.
- An invention of a non-aqueous electrolyte secondary battery using a mass% is disclosed.
- the conventional non-aqueous electrolyte secondary battery since it is possible to suppress deterioration of battery characteristics due to the volume change while using silicon oxide having a high capacity and a large volume change due to charging and discharging, the conventional non-aqueous electrolyte secondary battery can be used. Good battery characteristics can be secured without greatly changing the configuration of the secondary battery.
- the non-aqueous electrolyte secondary battery is left for a certain period in order to charge and discharge the non-aqueous electrolyte sufficiently after spreading it to the electrode plate and the separator.
- the potential of the negative electrode is 3 V or more on the basis of lithium, which is generally nobler than the dissolution potential of copper used for the negative electrode core. Since it becomes an electric potential, the copper core is melted, and in the worst case, there is a possibility of inconvenience of an internal short circuit.
- the charging conditions before standing vary depending on the specifications of the non-aqueous electrolyte secondary battery, but according to the results of previous studies, charging at a rate of approximately 5 to 10% of the charging capacity at which the negative electrode is fully charged. Charging at depth. When charging at a charging depth of less than 5%, the charging capacity for leaving the battery is insufficient. In the initial charge, the reduced film formed on the negative electrode surface must be stabilized. However, if the charge capacity is less than 5%, the formation of the reduced film is not sufficient. The negative electrode potential returns to a more noble potential than the reduction coating formation potential.
- the negative electrode reduction film is formed again by charging after being left standing, so that lithium ions are consumed again to form an irreversible reduction film, and the battery capacity is reduced.
- the generation of gas accompanying the formation of the reduced film again causes an increase in battery thickness in the rectangular battery.
- the depth of charge will be increased with insufficient penetration of the electrolyte, causing an uneven reaction in the electrode. Therefore, the probability that a battery that does not satisfy the design capacity will be increased.
- the present invention has been made to solve the above-described problems of the prior art, and suppresses an increase in the initial battery thickness when silicon or silicon oxide is mixed with a graphite material and used as a negative electrode active material.
- Another object of the present invention is to provide a non-aqueous electrolyte secondary battery excellent in cycle characteristics.
- the non-aqueous electrolyte secondary battery of the present invention includes a positive electrode plate including a positive electrode mixture layer containing a positive electrode active material capable of inserting and extracting lithium ions, and inserting and extracting lithium ions.
- a non-aqueous electrolyte secondary battery comprising a negative electrode plate having a negative electrode mixture layer containing a negative electrode active material capable of being formed, a separator, and a non-aqueous electrolyte
- the negative electrode active material is made of metallic silicon and SiOx 20% by mass or more of a graphite material coated with amorphous carbon in at least one of silicon oxide (0.5 ⁇ x ⁇ 1.6) and a graphite material.
- the content ratio of the metal silicon and silicon oxide is 1% by mass or more and 20% by mass or less in the entire negative electrode active material.
- the non-aqueous electrolyte secondary battery of the present invention contains not only a graphite material but also at least one of metal silicon and silicon oxide represented by SiOx as a negative electrode active material.
- the silicon oxide represented by metal silicon and SiOx has a larger volume change due to charge / discharge than the graphite material, but the theoretical capacity value is larger than that of the graphite material. Therefore, according to the nonaqueous electrolyte secondary battery of the present invention, the battery capacity can be made larger than that of the nonaqueous electrolyte secondary battery using the negative electrode active material made of only the graphite material.
- the negative electrode active material used in the nonaqueous electrolyte secondary battery of the present invention contains a graphite material coated with amorphous carbon.
- This graphite material coated with amorphous carbon is difficult to decompose the non-aqueous electrolyte and has an effect of adsorbing gas through the pores on the surface. Therefore, the graphite material contains 20% by mass or more in the total graphite material. In this case, it is difficult for a phenomenon in which the reduced coating of the negative electrode is decomposed during the standing period after the initial charging, and the swelling of the battery is suppressed. If the graphite material is coated with 100% amorphous carbon, battery swelling is suppressed, but cycle characteristics deteriorate. Therefore, the content of the graphite material covered with amorphous carbon in the total graphite material is preferably 90% by mass or less.
- the content of metal silicon and silicon oxide in the whole negative electrode active material is less than 1% by mass, the effect of addition of metal silicon or silicon oxide does not appear.
- the rate at which the reduced coating of the negative electrode is decomposed increases, and not only the swelling of the battery increases, but also the cycle characteristics deteriorate.
- the ratio of the graphite material coated with amorphous carbon in the graphite material is more preferably 50% by mass or more and 90% by mass or less.
- the ratio of the graphite material coated with amorphous carbon in the graphite material is 50% by mass or more, it becomes possible to further suppress the swelling of the battery during the standing period after the initial charging.
- the coating amount of amorphous carbon is 0.1% by mass or more and 6.5% by mass or less with respect to the graphite material coated with amorphous carbon.
- the amorphous carbon coating amount is less than 0.1% by mass with respect to the graphite material coated with amorphous carbon, the cycle characteristics are good, but the swelling of the battery during the standing period after the initial charge is suppressed. If the effect is not manifested and the amount exceeds 6.5% by mass, the swelling of the battery during the standing period after the initial charging is suppressed, but the cycle characteristics deteriorate.
- a more preferable coating amount of amorphous carbon is 0.5% by mass or more and 5.0% by mass or less with respect to the graphite material coated with amorphous carbon.
- the nonaqueous electrolyte secondary battery of the present invention can be appropriately selected and used as long as it is a positive electrode plate using a compound capable of reversibly occluding and releasing lithium ions as a positive electrode active material.
- the positive electrode active material of these nonaqueous electrolyte secondary batteries is represented by LiMO 2 (where M is at least one of Co, Ni, and Mn) capable of reversibly occluding and releasing lithium ions.
- LiMnO 2 , LiCo x Mn y Ni z O 2 (x + y + z) 1
- LiMn 2 O 4 LiFePO 4
- LiFePO 4 LiFePO 4
- Non-aqueous solvents that can be used in the non-aqueous electrolyte of the non-aqueous electrolyte secondary battery of the present invention include cyclic carbonates such as ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), fluorine Cyclic carbonates, cyclic carboxylic acid esters such as ⁇ -butyrolactone ( ⁇ -BL), ⁇ -valerolactone ( ⁇ -VL), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC) Chain carbonates such as methylpropyl carbonate (MPC) and dibutyl carbonate (DBC), fluorinated chain carbonates, methyl pivalate, ethyl pivalate, methyl isobutyrate, methyl propionate, etc.
- cyclic carbonates such as ethylene carbonate (EC), propylene carbonate (PC), butylene carbonate (BC), fluorine Cyclic carbonates
- Carboxylic acid ester, N, N'-dimethylform Bromide, N- methyl oxazolidinone amide compounds such as sulfur compounds such as sulfolane, tetrafluoroborate 1-ethyl-3- ambient temperature molten salt such as methylimidazolium the like can be exemplified. It is desirable to use a mixture of two or more of these.
- fluoroethylene carbonate when fluoroethylene carbonate is contained in the non-aqueous electrolyte of the non-aqueous electrolyte secondary battery of the present invention, it is contained in the non-aqueous solvent so as to be 0.1 volume% or more and 35 volume% or less. It is preferable.
- fluoroethylene carbonate when fluoroethylene carbonate is contained in a non-aqueous solvent, the viscosity of the non-aqueous electrolyte is increased and the diffusibility of lithium ions is reduced, so that swelling of the battery during the standing period after the initial charge is sufficiently suppressed. In addition, cycle characteristics are also improved.
- a more preferable content of fluoroethylene carbonate in the non-aqueous solvent is 0.5% by volume or more and 30% by volume or less.
- nonaqueous electrolyte used in the nonaqueous electrolyte secondary battery of the present invention as a compound for stabilizing the electrode, vinylene carbonate (VC), vinylethyl carbonate (VEC), and succinic anhydride (SUCAH) , Maleic anhydride (MAAH), glycolic anhydride, ethylene sulfite (ES), divinyl sulfone (VS), vinyl acetate (VA), vinyl pivalate (VP), catechol carbonate, biphenyl (BP), etc. Good. Two or more of these compounds can be appropriately mixed and used.
- a lithium salt generally used as an electrolyte salt in a non-aqueous electrolyte secondary battery can be used as an electrolyte salt dissolved in a non-aqueous solvent.
- Such lithium salts include LiPF 6 , LiBF 4 , LiCF 3 SO 3 , LiN (CF 3 SO 2 ) 2 , LiN (C 2 F 5 SO 2 ) 2 , LiN (CF 3 SO 2 ) (C 4 F 9 SO 2 ), LiC (CF 3 SO 2 ) 3 , LiC (C 2 F 5 SO 2 ) 3 , LiAsF 6 , LiClO 4 , Li 2 B 10 Cl 10 , Li 2 B 12 Cl 12 , and mixtures thereof Illustrated.
- LiPF 6 lithium hexafluorophosphate
- the amount of electrolyte salt dissolved in the non-aqueous solvent is preferably 0.8 to 1.5 mol / L.
- the positive electrode plate contains zirconium, magnesium and aluminum by coprecipitation of 0.1 mol% of zirconium and 1 mol% of magnesium and aluminum, respectively, with respect to cobalt during the synthesis of cobalt carbonate.
- Cobalt tetroxide was obtained. This was mixed with lithium carbonate as a lithium source and baked at 850 ° C. for 20 hours to contain zirconium, magnesium and aluminum-containing lithium cobalt oxide (LiCo 0.979 Zr 0.001 Mg 0.01 Al 0.01 O 2 ).
- the positive electrode active material 95 parts by mass of zirconium, magnesium and aluminum-containing lithium cobalt oxide powder synthesized as described above as the positive electrode active material, 2.5 parts by mass of the carbon material powder as the conductive agent, and polyvinylidene fluoride powder as the binder
- NMP N-methylpyrrolidone
- the positive electrode mixture slurry was applied to both surfaces of an aluminum current collector having a thickness of 15 ⁇ m by a doctor blade method to form a positive electrode active material mixture layer on both surfaces of the positive electrode current collector. Then, after drying, it was rolled using a compression roller and cut into a predetermined size to produce a positive electrode plate.
- the coating amount of amorphous carbon was defined as the ratio of amorphous carbon in the graphite particles coated with amorphous carbon.
- NMP solution 97% by mass of the negative electrode active material, 1.5% by mass of carboxymethyl cellulose (CMC) as a thickener, and 1.5% by mass of styrene butadiene rubber (SBR) as a binder
- CMC carboxymethyl cellulose
- SBR styrene butadiene rubber
- Ethylene carbonate (EC), methyl ethyl carbonate (MEC) and diethyl carbonate (DEC) were mixed at a volume ratio of 30:60:10, and then lithium hexafluorophosphate (LIPF 6 ) was added at a concentration of 1 mol. / L was dissolved. Furthermore, vinylene carbonate (VC) was added and dissolved at 2.0 mass% with respect to the whole non-aqueous electrolyte solution to prepare a non-aqueous electrolyte solution.
- FEC fluoroethylene carbonate
- the compounding ratio of each component was prepared so that it might become a composition shown in Table 4 mentioned later.
- the positive electrode plate and the negative electrode plate prepared as described above are wound through a separator made of a polyethylene microporous film, and a polypropylene tape is attached to the outermost periphery to produce a cylindrical wound electrode body. did. Thereafter, it was pressed into a flat wound electrode body. Also, a sheet-like laminate material having a five-layer structure of resin layer (polypropylene) / adhesive layer / aluminum alloy layer / adhesive material layer / resin layer (polypropylene) is prepared, and this laminate material is folded to form the bottom. In addition, a cup-shaped electrode body storage space was formed.
- the flat wound electrode body and the non-aqueous electrolyte were inserted into a cup-shaped electrode body storage space in a glove box under an argon atmosphere. Thereafter, the inside of the laminate outer body is decompressed to impregnate the separator with the nonaqueous electrolyte, the opening of the laminate outer body is sealed, and the nonaqueous electrolyte secondary having a height of 62 mm, a width of 35 mm, and a thickness of 3.6 mm is obtained. A battery was produced.
- the design capacity of the obtained nonaqueous electrolyte secondary battery is 800 mAh at a charge end voltage of 4.4V.
- the ratio of the discharge capacity at the second cycle to the discharge capacity at the first cycle of each battery was determined as 2It / 1It discharge load characteristics.
- the ratio of the graphite coated with amorphous carbon is preferably 20% by mass or more and 90% by mass or less, more preferably 50% by mass or more and 90% by mass or less with respect to the total graphite. .
- Comparative Example 5 in which the addition amount of silicon oxide in all the negative electrode active materials was 25% by mass, the initial capacity was very good, but the battery thickness increment was as large as 0.71 mm, and the cycle characteristics were 49. It was greatly reduced to 8%. This is presumably because the amount of added silicon oxide was increased, and the charge depth of graphite during charging before being left was deviated from the preferred value. Therefore, in terms of design, it is considered undesirable to add as much as 25% by mass of silicon oxide to the entire negative electrode active material. Therefore, it was found that the content ratio of silicon oxide in all negative electrode active materials is preferably 0.5% by mass or more and 20% by mass or less.
- the amount of the amorphous carbon coated on the graphite coated with amorphous carbon is preferably 0.1 to 6.5% by mass, more preferably 0.5 to 5% by mass.
- FEC fluoroethylene carbonate
- the content of other components in the solvent of the non-aqueous electrolyte is 30% by volume for ethylene carbonate (EC), 60% by volume for methyl ethyl carbonate (MEC), and 10% by volume for diethyl carbonate (DEC).
- EC ethylene carbonate
- MEC methyl ethyl carbonate
- DEC diethyl carbonate
- VC vinylene carbonate
- This VC is a component that is conventionally added to stabilize the reduced coating formed on the negative electrode surface.
- the content ratio of FEC in the nonaqueous solvent of the nonaqueous electrolyte increases, the 2It / 1It discharge load characteristic gradually decreases, but the FEC content ratio is the maximum 35% by volume. Even with 16 batteries, the 2It / 1It discharge load characteristic was 87.5%, which is a good result.
- Such 2It / 1It discharge load characteristics are considered to be because the viscosity of the non-aqueous electrolyte increases with the increase in the content ratio of FEC, and the diffusibility of lithium ions decreases. Accordingly, it has been found that the content of FEC is preferably 0.1 to 35% by volume, but more preferably 0.5 to 30% by volume.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
正極極板としては、炭酸コバルトの合成時にコバルトに対して0.1mol%のジルコニウムと、それぞれ1mol%のマグネシウムとアルミニウムとを共沈させ、これを熱分解反応させて、ジルコニウム、マグネシウム及びアルミニウム含有四三酸化コバルトを得た。これにリチウム源としての炭酸リチウムを混合し、850℃で20時間焼成して、ジルコニウム、マグネシウム、アルミニウム含有コバルト酸リチウム(LiCo0.979Zr0.001Mg0.01Al0.01O2)を得た。
(1)酸化ケイ素活物質の作製
酸化ケイ素として、組成がSiO(x=1)の粒子を、アルゴン雰囲気下でCVD法により炭素被覆を行った。炭素被覆後の粒子はアルゴン雰囲気下で1000℃で不均化処理を行った後、解砕、分級を行い、炭素被覆SiOを得た。なお、本発明の効果の発現は、炭素の被覆処理の有無によって限定されるものではないので、炭素の被覆処理は必ずしも必要な工程ではない。また、炭素被覆を行う場合は、その手法については種々の周知の方法を採用し得る。
非晶質炭素で被覆されていない黒鉛として、平均粒径が20μmの鱗片状人造黒鉛と、非晶質炭素で被覆された黒鉛と、酸化ケイ素とを所定の質量比になるように秤量・混合して負極活物質とした。なお、非晶質炭素で被覆された黒鉛は次のように調製した。まず、核となる鱗片状人造黒鉛と、この核の表面を被覆して非晶質炭素となる炭素前駆体としての石油ピッチを準備した。これらを不活性ガス雰囲気下で加熱しながら混合し、焼成した。その後、粉砕・分級して、平均粒径が20μmで、表面が非晶質炭素で被覆された黒鉛を作製した。非晶質炭素の被覆量は、非晶質炭素で被覆された黒鉛粒子中の非晶質炭素の割合で定義した。この負極活物質が97質量%、増粘剤としてのカルボキシメチルセルロース(CMC)が1.5質量%、結着材としてのスチレンブタジエンゴム(SBR)が1.5質量%となるようにNMP溶液中で混合し、負極合剤スラリーを調製した。この負極合材スラリーを厚さ8μmの銅製の集電体の量面にドクターブレード法により塗布して、負極集電体の両面に負極活物質合剤層を形成した。その後、乾燥した後に圧縮ローラーを用いて圧延し、所定サイズに裁断して負極極板を作製した。
エチレンカーボネート(EC)と、メチルエチルカーボネート(MEC)とジエチルカーボネート(DEC)とを体積比で30:60:10の割合で混合した後、ヘキサフルオロリン酸リチウム(LIPF6)をその濃度が1mol/Lとなるように溶解した。さらにビニレンカーボネート(VC)を非水電解液全体に対して2.0質量%とし添加して溶解させ、非水電解液を調製した。また、フルオロエチレンカーボネート(FEC)を添加する場合には、後述の表4に示した組成となるように各成分の配合比を調製した。
上記のようにして作製した正極極板及び負極極板を、ポリエチレン製微多孔質膜からなるセパレータを介して巻回し、最外周にポリプロピレン製のテープを張り付けて円筒状の巻回電極体を作製した。この後、プレスして偏平状の巻回電極体とした。また、樹脂層(ポリプロピレン)/接着剤層/アルミニウム合金層/接着材層/樹脂層(ポリプロピレン)の5層構造からなるシート状のラミネート材を用意し、このラミネート材を折り返して底部を形成すると共にカップ状の電極体収納空間を形成した。次いで、アルゴン雰囲気下のグローブボックス内で上記偏平状巻回電極体と上記非水電解質とをカップ状の電極体収納空間に挿入した。この後、ラミネート外装体内部を減圧してセパレータ内部に非水電解質を含浸させ、ラミネート外装体の開口部を封止して、高さ62mm、幅35mm、厚み3.6mmの非水電解質二次電池を作製した。得られた非水電解質二次電池の設計容量は、充電終止電圧4.4Vで、800mAhである。
各電池を25℃において、1It=800mAの定電流で、充電終止電圧4.4V時の電池設計容量である満充電容量に対して7%の充電を行い、その状態での電池厚みを測定した。次いで、非水電解液の浸透を促進させるため、60℃の恒温槽中で1日放置した後の電池厚みを測定し、放置前後の電池厚みの変化を電池厚み増分として求めた。
各電池を25℃において、1It=800mAの定電流で充電し、電池電圧が4.4Vに達した後は4.4Vの定電圧で充電電流が40mAになるまで充電し、その後、電流値1It=800mAの定電流で電池電圧が2.75Vとなるまで放電し、これを1サイクル目の充放電とし、1サイクル目の放電容量を求めた。同じ条件で充放電を繰り返し、300サイクル目の放電容量を求め、1サイクル目の放電容量に対する300サイクル目の放電容量の比を容量維持率として求めた。
各電池を25℃において、1It=800mAの定電流で充電し、電池電圧が4.4Vに達した後は4.4Vの定電圧で充電電流が40mAになるまで充電し、その後、電流値1It=800mAの定電流で電池電圧が2.75Vとなるまで放電し、これを1サイクル目の充放電とし、1サイクル目の放電容量を求めた。次に、各電池を25℃において、1It=800mAの定電流で充電し、電池電圧が4.4Vに達した後は4.4Vの定電圧で充電電流が40mAになるまで充電し、その後、電流値2It=1600mAの定電流で電池電圧が2.75Vとなるまで放電し、これを2サイクル目の放電とし、2サイクル目の放電容量を求めた。各電池の1サイクル目の放電容量に対する2サイクル目の放電容量の比を2It/1It放電負荷特性として求めた。
実施例1~4及び比較例1~3の非水電解質二次電池としては、負極活物質として、非晶質炭素の被覆量を1質量%一定とし、かつ、全負極活物質中の組成がSiO(x=1)である酸化ケイ素の添加量を3.5質量%一定とし、全黒鉛中の非晶質炭素で被覆されていない黒鉛の割合を100~0質量%(非晶質炭素で被覆された黒鉛の割合を0~100質量%)まで変化させたものを用いた。これらの各電池について、上記のようにして初期容量、電池厚み増分及びサイクル特性を測定した結果を、それぞれの負極活物質の組成と共に表1にまとめて示した。
実施例5~7及び比較例4、5の非水電解質二次電池としては、負極活物質として、非晶質炭素の被覆量を1質量%一定とし、全黒鉛中の非晶質炭素で被覆されていない黒鉛の割合を80質量%(非晶質炭素で被覆された黒鉛の割合を20質量%)一定とし、かつ、全負極活物質中の組成がSiO(x=1)である酸化ケイ素の添加量を0.5~25質量%まで変化させたものを用いた。これらの各電池について、上記のようにして初期容量、電池厚み増分及びサイクル特性を測定した結果を、それぞれの負極活物質の組成と共に表2にまとめて示した。
実施例8~11の非水電解質二次電池としては、負極活物質として、全黒鉛中の非晶質炭素で被覆されていない黒鉛の割合を80質量%(非晶質炭素で被覆された黒鉛の割合を20質量%)一定とし、全負極活物質中の組成がSiO(x=1)である酸化ケイ素の添加量を3.5質量%一定とし、かつ、非晶質炭素の被覆量を0.1~6.5質量%まで変化させたものを用いた。これらの各電池について、上記のようにして初期容量、電池厚み増分及びサイクル特性を測定した結果を、それぞれの負極活物質の組成と共に表3にまとめて示した。なお、表3には実施例1の電池の測定結果も併記した。
実施例12~16の非水電解質二次電池としては、負極活物質として、全黒鉛中の非晶質炭素で被覆されていない黒鉛の割合を50質量%(非晶質炭素で被覆された黒鉛の割合を50質量%)一定とし、全負極活物質中の組成がSiO(x=1)である酸化ケイ素の添加量を3.5質量%一定とし、非晶質炭素の被覆量を1質量%一定とし、かつ、非水電解液の溶媒中のフルオロエチレンカーボネート(FEC)の含有割合を0~35体積%まで変化させたものを用いた。
Claims (4)
- リチウムイオンの吸蔵・放出が可能な正極活物質を含む正極合剤層を備えた正極極板と、リチウムイオンの吸蔵・放出が可能な負極活物質を含む負極合剤層を備えた負極極板と、セパレータと、非水電解液と、を備える非水電解質二次電池において、
前記負極活物質は、
金属ケイ素及びSiOxで表される酸化ケイ素(0.5≦x<1.6)の少なくとも一方と黒鉛材料との混合物であり、
前記黒鉛材料中に非晶質炭素で被覆された黒鉛材料を20質量%以上、90質量%以下の割合で含み、
前記金属ケイ素及び酸化ケイ素の含有割合は、全負極活物質中の1質量%以上、20質量%以下であることを特徴とする非水電解質二次電池。 - 前記黒鉛材料中の前記非晶質炭素で被覆された黒鉛材料の割合は、50質量%以上、90質量%以下であることを特徴とする請求項1に記載の非水電解質二次電池。
- 前記非晶質炭素の被覆量は、前記非晶質炭素で被覆された黒鉛材料に対して0.5質量%以上、5質量%以下であることを特徴とする請求項1に記載の非水電解質二次電池。
- 前記非水電解液は、フルオロエチレンカーボネートを0.5体積%以上、30体積%以下の割合で含んでいることを特徴とする請求項1~3のいずれかに記載の非水電解質二次電池。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/363,909 US20140356724A1 (en) | 2011-12-22 | 2012-12-20 | Non-aqueous electrolyte secondary battery |
| JP2013550322A JP6030070B2 (ja) | 2011-12-22 | 2012-12-20 | 非水電解質二次電池 |
| CN201280063342.7A CN104011924A (zh) | 2011-12-22 | 2012-12-20 | 非水电解质二次电池 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-281041 | 2011-12-22 | ||
| JP2011281041 | 2011-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013094668A1 true WO2013094668A1 (ja) | 2013-06-27 |
Family
ID=48668551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/083006 Ceased WO2013094668A1 (ja) | 2011-12-22 | 2012-12-20 | 非水電解質二次電池 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140356724A1 (ja) |
| JP (1) | JP6030070B2 (ja) |
| CN (1) | CN104011924A (ja) |
| WO (1) | WO2013094668A1 (ja) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200983A (ja) * | 2012-03-23 | 2013-10-03 | Mitsubishi Chemicals Corp | 非水系二次電池用負極材、非水系二次電池用負極及び非水系二次電池 |
| JP2015106563A (ja) * | 2013-11-29 | 2015-06-08 | 深▲セン▼市貝特瑞新能源材料股▲ふん▼有限公司 | SIOx系複合負極材料、製造方法及び電池 |
| WO2015146079A1 (ja) * | 2014-03-25 | 2015-10-01 | 三洋電機株式会社 | 非水電解質二次電池用負極板及び非水電解質二次電池 |
| JP2015185491A (ja) * | 2014-03-26 | 2015-10-22 | 三洋電機株式会社 | 非水電解質二次電池 |
| JP2015195201A (ja) * | 2014-03-28 | 2015-11-05 | 三菱化学株式会社 | 非水系電解液及びそれを用いた非水系電解液電池 |
| WO2016103657A1 (ja) * | 2014-12-26 | 2016-06-30 | 三洋電機株式会社 | 非水電解質二次電池 |
| JP2016167352A (ja) * | 2015-03-09 | 2016-09-15 | 日立マクセル株式会社 | リチウムイオン二次電池 |
| WO2016152716A1 (ja) * | 2015-03-24 | 2016-09-29 | 日本電気株式会社 | リチウムイオン二次電池用負極および二次電池 |
| JP2016219275A (ja) * | 2015-05-21 | 2016-12-22 | 日立マクセル株式会社 | リチウムイオン二次電池 |
| CN106463716A (zh) * | 2014-06-23 | 2017-02-22 | 信越化学工业株式会社 | 非水电解质二次电池用负极、其材料、非水电解质二次电池及负极活性物质颗粒的制造方法 |
| WO2017073016A1 (ja) * | 2015-10-30 | 2017-05-04 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池 |
| WO2019031597A1 (ja) * | 2017-08-10 | 2019-02-14 | 昭和電工株式会社 | リチウムイオン二次電池用負極材料およびリチウムイオン二次電池 |
| WO2020022452A1 (ja) | 2018-07-26 | 2020-01-30 | 三井化学株式会社 | 電池用非水電解液及びリチウム二次電池 |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6132173B2 (ja) * | 2014-01-31 | 2017-05-24 | 株式会社豊田自動織機 | 非水系二次電池用負極及び非水系二次電池、負極活物質及びその製造方法、ナノシリコンと炭素層とカチオン性ポリマー層とを具備する複合体、ナノシリコンと炭素層よりなる複合体の製造方法 |
| CN107431249A (zh) * | 2015-02-27 | 2017-12-01 | 三洋电机株式会社 | 非水电解质二次电池的制造方法 |
| US10297826B2 (en) | 2015-02-27 | 2019-05-21 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary battery |
| US10873079B2 (en) | 2015-06-29 | 2020-12-22 | Toyota Motor Engineering & Manufacturing North America, Inc. | Low resistance, multivalent metal anodes |
| US20180212281A1 (en) * | 2017-01-24 | 2018-07-26 | Samsung Electronics Co., Ltd. | Lithium secondary battery including an additive |
| CN110679026A (zh) * | 2017-05-25 | 2020-01-10 | 株式会社村田制作所 | 非水电解质二次电池和非水电解质二次电池的制造方法 |
| CN110506356A (zh) * | 2017-07-26 | 2019-11-26 | 株式会社日立制作所 | 半固体电解液、半固体电解质、半固体电解质层和二次电池 |
| JP7013773B2 (ja) * | 2017-09-29 | 2022-02-01 | 三洋電機株式会社 | 非水電解質二次電池及びその製造方法 |
| JP6822372B2 (ja) * | 2017-10-12 | 2021-01-27 | トヨタ自動車株式会社 | 負極板および非水電解質二次電池 |
| KR102312408B1 (ko) | 2017-12-01 | 2021-10-13 | 주식회사 엘지에너지솔루션 | 리튬이차전지용 음극 및 이를 포함하는 리튬이차전지 |
| JP7214662B2 (ja) * | 2018-01-19 | 2023-01-30 | 三洋電機株式会社 | 非水電解質二次電池 |
| US11949091B2 (en) * | 2018-02-28 | 2024-04-02 | Panasonic Intellectual Property Management Co., Ltd. | Charging method of non-aqueous electrolyte secondary battery, and charging system of non-aqueous electrolyte secondary battery |
| JP7112872B2 (ja) * | 2018-03-30 | 2022-08-04 | 三洋電機株式会社 | 二次電池 |
| JP6969483B2 (ja) * | 2018-04-09 | 2021-11-24 | トヨタ自動車株式会社 | リチウムイオン二次電池およびその製造方法 |
| CN108767318A (zh) * | 2018-05-24 | 2018-11-06 | 国联汽车动力电池研究院有限责任公司 | 一种含有添加剂的锂盐电解液 |
| KR20200065514A (ko) * | 2018-11-30 | 2020-06-09 | 현대자동차주식회사 | 이차전지용 실리콘계 복합 음극활물질, 이를 포함하는 음극 |
| CN111293352A (zh) * | 2018-12-06 | 2020-06-16 | 三星电子株式会社 | 全固态二次电池和制造全固态二次电池的方法 |
| CN109659615A (zh) * | 2018-12-20 | 2019-04-19 | 河南电池研究院有限公司 | 匹配硅碳负极材料的锂离子电池电解液及其制备的电池 |
| JP7340780B2 (ja) * | 2019-01-30 | 2023-09-08 | パナソニックIpマネジメント株式会社 | 角形非水電解質二次電池 |
| US20220416245A1 (en) * | 2019-11-29 | 2022-12-29 | Sanyo Electric Co., Ltd. | Negative electrode for nonaqueous electrolyte secondary batteries, nonaqueous electrolyte secondary battery, and method for producing negative electrode for nonaqueous electrolyte secondary batteries |
| CN112886050B (zh) | 2019-11-29 | 2022-07-05 | 宁德时代新能源科技股份有限公司 | 二次电池及含有该二次电池的装置 |
| JP7168622B2 (ja) * | 2020-09-08 | 2022-11-09 | プライムプラネットエナジー&ソリューションズ株式会社 | 電池およびその製造方法 |
| CN116864805A (zh) * | 2020-12-09 | 2023-10-10 | 宁德新能源科技有限公司 | 电化学装置和电子装置 |
| CN115020684B (zh) * | 2022-07-26 | 2023-10-20 | 蜂巢能源科技股份有限公司 | 一种石墨、硅氧化物和硅复合的负极材料及其应用 |
| WO2025244024A1 (ja) * | 2024-05-22 | 2025-11-27 | パナソニックエナジー株式会社 | 非水電解質二次電池 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004146292A (ja) * | 2002-10-28 | 2004-05-20 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
| JP2008192488A (ja) * | 2007-02-06 | 2008-08-21 | Nec Tokin Corp | 非水電解質二次電池 |
| JP2010092830A (ja) * | 2008-09-11 | 2010-04-22 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
| JP2010282760A (ja) * | 2009-06-02 | 2010-12-16 | Mitsubishi Chemicals Corp | 非水系電解液、非水系電解液二次電池、およびビニレンカーボネート |
| JP2011100745A (ja) * | 2011-01-26 | 2011-05-19 | Gs Yuasa Corp | 非水電解質二次電池 |
| JP2011198614A (ja) * | 2010-03-19 | 2011-10-06 | Toyota Industries Corp | 負極材料、非水電解質二次電池および負極材料の製造方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414743C (zh) * | 2002-05-08 | 2008-08-27 | 株式会社杰士汤浅 | 一种非水电解质二次电池 |
| CN1259740C (zh) * | 2003-05-20 | 2006-06-14 | 比亚迪股份有限公司 | 一种锂离子二次电池 |
| CN100576610C (zh) * | 2006-12-22 | 2009-12-30 | 比亚迪股份有限公司 | 一种含硅复合材料及其制备方法 |
| KR101057162B1 (ko) * | 2008-12-01 | 2011-08-16 | 삼성에스디아이 주식회사 | 음극활물질, 이를 구비하는 음극 및 리튬이차전지 |
| JP4954270B2 (ja) * | 2009-02-13 | 2012-06-13 | 日立マクセルエナジー株式会社 | 非水二次電池 |
| US9876221B2 (en) * | 2010-05-14 | 2018-01-23 | Samsung Sdi Co., Ltd. | Negative active material for rechargeable lithium battery and rechargeable lithium battery including same |
| CN102185128B (zh) * | 2011-04-02 | 2012-11-28 | 上海交通大学 | 一种硅碳复合材料及其制备方法 |
-
2012
- 2012-12-20 JP JP2013550322A patent/JP6030070B2/ja active Active
- 2012-12-20 WO PCT/JP2012/083006 patent/WO2013094668A1/ja not_active Ceased
- 2012-12-20 US US14/363,909 patent/US20140356724A1/en not_active Abandoned
- 2012-12-20 CN CN201280063342.7A patent/CN104011924A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004146292A (ja) * | 2002-10-28 | 2004-05-20 | Japan Storage Battery Co Ltd | 非水電解質二次電池 |
| JP2008192488A (ja) * | 2007-02-06 | 2008-08-21 | Nec Tokin Corp | 非水電解質二次電池 |
| JP2010092830A (ja) * | 2008-09-11 | 2010-04-22 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
| JP2010282760A (ja) * | 2009-06-02 | 2010-12-16 | Mitsubishi Chemicals Corp | 非水系電解液、非水系電解液二次電池、およびビニレンカーボネート |
| JP2011198614A (ja) * | 2010-03-19 | 2011-10-06 | Toyota Industries Corp | 負極材料、非水電解質二次電池および負極材料の製造方法 |
| JP2011100745A (ja) * | 2011-01-26 | 2011-05-19 | Gs Yuasa Corp | 非水電解質二次電池 |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200983A (ja) * | 2012-03-23 | 2013-10-03 | Mitsubishi Chemicals Corp | 非水系二次電池用負極材、非水系二次電池用負極及び非水系二次電池 |
| JP2015106563A (ja) * | 2013-11-29 | 2015-06-08 | 深▲セン▼市貝特瑞新能源材料股▲ふん▼有限公司 | SIOx系複合負極材料、製造方法及び電池 |
| WO2015146079A1 (ja) * | 2014-03-25 | 2015-10-01 | 三洋電機株式会社 | 非水電解質二次電池用負極板及び非水電解質二次電池 |
| JP2015185491A (ja) * | 2014-03-26 | 2015-10-22 | 三洋電機株式会社 | 非水電解質二次電池 |
| JP2015195201A (ja) * | 2014-03-28 | 2015-11-05 | 三菱化学株式会社 | 非水系電解液及びそれを用いた非水系電解液電池 |
| CN106463716A (zh) * | 2014-06-23 | 2017-02-22 | 信越化学工业株式会社 | 非水电解质二次电池用负极、其材料、非水电解质二次电池及负极活性物质颗粒的制造方法 |
| CN106463716B (zh) * | 2014-06-23 | 2019-05-28 | 信越化学工业株式会社 | 非水电解质二次电池用负极、其材料、非水电解质二次电池及负极活性物质颗粒的制造方法 |
| EP3159955A4 (en) * | 2014-06-23 | 2017-11-15 | Shin-Etsu Chemical Co., Ltd. | Negative electrode material for nonaqueous electrolyte secondary batteries, negative electrode for nonaqueous electrolyte secondary batteries, nonaqueous electrolyte secondary battery and method for producing negative electrode active material particles |
| US10629890B2 (en) | 2014-06-23 | 2020-04-21 | Shin-Etsu Chemical Co., Ltd. | Negative electrode material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method of producing negative electrode active material particles |
| WO2016103657A1 (ja) * | 2014-12-26 | 2016-06-30 | 三洋電機株式会社 | 非水電解質二次電池 |
| JPWO2016103657A1 (ja) * | 2014-12-26 | 2017-10-05 | 三洋電機株式会社 | 非水電解質二次電池 |
| JP2016167352A (ja) * | 2015-03-09 | 2016-09-15 | 日立マクセル株式会社 | リチウムイオン二次電池 |
| WO2016152716A1 (ja) * | 2015-03-24 | 2016-09-29 | 日本電気株式会社 | リチウムイオン二次電池用負極および二次電池 |
| JPWO2016152716A1 (ja) * | 2015-03-24 | 2018-01-18 | 日本電気株式会社 | リチウムイオン二次電池用負極および二次電池 |
| JP2016219275A (ja) * | 2015-05-21 | 2016-12-22 | 日立マクセル株式会社 | リチウムイオン二次電池 |
| WO2017073016A1 (ja) * | 2015-10-30 | 2017-05-04 | パナソニックIpマネジメント株式会社 | 非水電解質二次電池 |
| US20180241087A1 (en) * | 2015-10-30 | 2018-08-23 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery |
| CN108140896A (zh) * | 2015-10-30 | 2018-06-08 | 松下知识产权经营株式会社 | 非水电解质二次电池 |
| US10811729B2 (en) | 2015-10-30 | 2020-10-20 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery |
| WO2019031597A1 (ja) * | 2017-08-10 | 2019-02-14 | 昭和電工株式会社 | リチウムイオン二次電池用負極材料およびリチウムイオン二次電池 |
| WO2020022452A1 (ja) | 2018-07-26 | 2020-01-30 | 三井化学株式会社 | 電池用非水電解液及びリチウム二次電池 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6030070B2 (ja) | 2016-11-24 |
| JPWO2013094668A1 (ja) | 2015-04-27 |
| CN104011924A (zh) | 2014-08-27 |
| US20140356724A1 (en) | 2014-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6030070B2 (ja) | 非水電解質二次電池 | |
| JP2021501454A (ja) | 高温貯蔵特性が向上されたリチウム二次電池 | |
| JP2021501450A (ja) | 高温貯蔵特性が向上されたリチウム二次電池 | |
| KR20100087679A (ko) | 비수 전해질 이차 전지 | |
| JP5687804B2 (ja) | 非水電解液及びそれを用いたリチウム二次電池 | |
| JP2014067583A (ja) | 非水電解質二次電池 | |
| US9590234B2 (en) | Nonaqueous electrolyte secondary battery | |
| JP2014067629A (ja) | 非水電解質二次電池 | |
| JP7214662B2 (ja) | 非水電解質二次電池 | |
| JP2015170542A (ja) | 非水電解質二次電池 | |
| JP2014135154A (ja) | 非水電解質二次電池 | |
| JP2015185491A (ja) | 非水電解質二次電池 | |
| JP6397642B2 (ja) | 非水電解質二次電池 | |
| JP2011192561A (ja) | 非水電解液二次電池の製造方法 | |
| WO2015146079A1 (ja) | 非水電解質二次電池用負極板及び非水電解質二次電池 | |
| CN104508891B (zh) | 非水电解质二次电池 | |
| JP2011181386A (ja) | 非水電解質二次電池 | |
| JP6072689B2 (ja) | 非水電解質二次電池 | |
| JP2010140737A (ja) | 非水電解質二次電池 | |
| JP6042195B2 (ja) | 非水電解質二次電池 | |
| JP6988169B2 (ja) | 非水電解質二次電池用負極の製造方法、および非水電解質二次電池の製造方法 | |
| JP2014067581A (ja) | 非水電解質二次電池 | |
| JP2014067625A (ja) | 非水電解質二次電池 | |
| JP2014179221A (ja) | 非水電解質二次電池 | |
| WO2014050025A1 (ja) | 非水電解質二次電池 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12859518 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2013550322 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14363909 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 12859518 Country of ref document: EP Kind code of ref document: A1 |