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WO2018048002A1 - Batterie à métal liquide - Google Patents

Batterie à métal liquide Download PDF

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Publication number
WO2018048002A1
WO2018048002A1 PCT/KR2016/010287 KR2016010287W WO2018048002A1 WO 2018048002 A1 WO2018048002 A1 WO 2018048002A1 KR 2016010287 W KR2016010287 W KR 2016010287W WO 2018048002 A1 WO2018048002 A1 WO 2018048002A1
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WO
WIPO (PCT)
Prior art keywords
liquid
solid electrolyte
current collector
positive electrode
electrode current
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
Application number
PCT/KR2016/010287
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English (en)
Korean (ko)
Inventor
백운규
신동혁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industry University Cooperation Foundation IUCF HYU
Original Assignee
Industry University Cooperation Foundation IUCF HYU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Industry University Cooperation Foundation IUCF HYU filed Critical Industry University Cooperation Foundation IUCF HYU
Publication of WO2018048002A1 publication Critical patent/WO2018048002A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • 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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/75—Wires, rods or strips
    • 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
    • H01M2300/0065—Solid electrolytes
    • H01M2300/0068—Solid electrolytes inorganic
    • 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 relates to a liquid metal battery, and more particularly to a liquid metal battery that can improve the electrochemical stability.
  • Liquid metal batteries is a battery that can provide a high energy density and power density, attracting attention as a next-generation battery for storing a large amount of electrical energy, such as in the energy storage system (ESS).
  • ESS energy storage system
  • the liquid metal battery uses high density electricity by ion exchange through the active material and electrolyte in the liquid by using the difference in density of the liquid anode, the liquid electrolyte and the liquid cathode and the immiscible property. Capacity can be implemented.
  • the problem to be solved by the present invention is to provide a liquid metal battery with improved electrochemical stability and electrical properties.
  • an aspect of the present invention provides a liquid metal battery.
  • the liquid metal cell is connected to the solid electrolyte through a liquid anode, a solid electrolyte disposed on the liquid anode, a liquid cathode disposed on the solid electrolyte, a positive electrode current collector in contact with the liquid anode, and the liquid cathode.
  • a negative electrode current collector having a spring shape.
  • the negative electrode current collector may be configured to maintain contact between the solid electrolyte and the liquid positive electrode when the liquid positive electrode expands or contracts in a depth direction.
  • the negative electrode current collector may include a plurality of springs connected to the solid electrolyte to provide an elastic force against a volume change of the liquid positive electrode.
  • the solid electrolyte may have a curved shape between the liquid anode and the liquid cathode.
  • the solid electrolyte may include a flat portion parallel to the surface of the liquid cathode, and a plurality of recesses bent upward or downward from the flat portion.
  • the thickness of the recess may be less than or equal to the thickness of the flat portion.
  • the positive electrode current collector may accommodate the liquid positive electrode, the solid electrolyte and the liquid negative electrode.
  • the solid electrolyte may extend upwardly to surround the liquid negative electrode between the liquid negative electrode and the positive electrode current collector.
  • One of the inner side of the positive electrode current collector and the outer side of the solid electrolyte is provided with a protrusion for limiting the volume change of the liquid positive electrode, the other of the inner side of the positive electrode current collector and the outer side of the solid electrolyte
  • a recess may be formed in the protrusion to accommodate the protrusion.
  • the liquid positive electrode may be further disposed between the solid electrolyte and the positive electrode current collector.
  • the liquid positive electrode may be sealed by the solid electrolyte and the positive electrode current collector.
  • the positive electrode current collector may have a spring shape passing through the liquid positive electrode and connected to the solid electrolyte.
  • the negative electrode current collector and the positive electrode current collector may each have a plurality of spring shapes.
  • the elastic modulus of the spring of the positive electrode current collector may be the same as the elastic modulus of the spring of the negative electrode current collector.
  • the liquid negative electrode and the liquid positive electrode can be sufficiently separated, As a result, self-discharge can be reduced.
  • the solid electrolyte can be moved in close contact with the liquid positive electrode and the liquid negative electrode according to the change in the depth direction due to the volume expansion and contraction of the liquid positive electrode. And it is possible to improve the electrochemical stability at the time of driving while sealing the cathode.
  • the solid electrolyte has a curved shape between the liquid anode and the liquid cathode, the surface area of the solid electrolyte capable of ion migration can be increased, thereby increasing the charge / discharge rate of the liquid metal battery.
  • the elastic movement of the solid electrolyte may be smoothed according to the volume change of the liquid positive electrode and the negative electrode, and the surface area collected in the liquid negative electrode may be increased.
  • the electric capacity of the liquid metal battery can be improved.
  • the spring-shaped positive electrode current collector is further connected to the solid electrolyte through the liquid positive electrode, thereby increasing the positive electrode current collecting area and maintaining contact between the liquid positive electrode and the solid electrolyte according to the volume change of the liquid positive electrode. .
  • FIG. 1 is a cross-sectional view showing a liquid metal battery in one embodiment of the present invention.
  • FIG. 2 is a partial perspective view illustrating the liquid metal battery of FIG. 1.
  • 3A and 3B are cross-sectional views illustrating movement of a solid electrolyte when driving a liquid metal battery according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a solid electrolyte of a liquid metal battery according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a liquid metal battery according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing a liquid metal battery according to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing a liquid metal battery in one embodiment of the present invention.
  • FIG. 2 is a partial perspective view illustrating the liquid metal battery of FIG. 1.
  • the liquid metal battery according to the present embodiment includes a positive electrode 100, an electrolyte 200, a negative electrode 300, a positive electrode current collector 150, and a negative electrode current collector 350.
  • the liquid metal battery may further include a vacuum valve 400 and a current collector protection part 370.
  • the positive electrode 100 and the negative electrode 300 When the liquid metal battery is driven, i.e., charged or discharged, the positive electrode 100 and the negative electrode 300 have a liquid state, and the electrolyte 200 is kept in a solid state. At this time, the solid electrolyte 200 may have a density greater than that of the liquid anode 100, but the solid electrolyte 200 is supported by the negative electrode current collector 350 connected thereto, such that the liquid anode 100 and The liquid cathode 300 may be separated and positioned on the liquid anode 100.
  • the liquid anode 100 may include a metal of Group II-VI.
  • the liquid anode 100 may include at least one selected from the group consisting of Al, Zn, Ga, Cd, In, Sn, Sb, Te, Hg, Ti, Pb, Bi, and alloys thereof.
  • the liquid anode 100 has a greater density than the liquid cathode 300 and may have a melting point of 1000 ° C. or less.
  • the melting point of the liquid anode 100 may be about 253 ° C. Accordingly, the liquid metal battery can be driven even in a low temperature (300 ° C or less) environment.
  • the liquid cathode 300 may include an alkali metal or an alkaline earth metal.
  • the liquid cathode 300 may include at least one selected from the group consisting of Li, Na, Mg, K, Ca, Rb, Sr, Cs, Ba, and alloys thereof.
  • the liquid cathode 300 has a smaller density than the liquid anode 100 and may have a melting point of 1000 ° C. or less.
  • the liquid metal battery may be driven at a melting point of about 180 ° C. even in a low temperature (300 ° C. or less) environment.
  • the solid electrolyte 200 may separate the liquid anode 100 and the liquid cathode 300.
  • the solid electrolyte 200 is disposed between the liquid anode 100 and the liquid cathode 300.
  • the solid electrolyte 200 is connected to the negative electrode current collector 350 having a spring shape and supported by the negative electrode current collector 350 so as to be held on the liquid positive electrode 100.
  • the solid electrolyte 200 may seal the liquid positive electrode 100 together with the positive electrode current collector 150. As described below, the position of the solid electrolyte 200 may be moved up and down as the liquid anode 100 is expanded or contracted in the depth direction according to the driving of the liquid metal battery.
  • the melting point of the solid electrolyte 200 may be much higher than the driving temperature of the liquid metal cell.
  • the solid electrolyte 200 may include a material having an ion conductivity while melting point exceeds 1000 ° C., such as beta-alumina, CaF 2, or the like.
  • the solid electrolyte 200 may have a predetermined thickness such that metal ions from the liquid cathode 300 are not transferred to the liquid anode 100 when charging the liquid metal battery.
  • the solid electrolyte 200 may have a thickness of 0.1 mm to 10 mm.
  • the thickness of the solid electrolyte 200 is less than 0.1 mm, metal ions from the liquid cathode 300 may be transferred to the liquid anode 100 to cause self-discharging, and the solid electrolyte 200 If the thickness is greater than 10 mm, the ion migration distance between the liquid anode 100 and the liquid cathode 300 is increased, thereby reducing the capacitance of the liquid metal battery.
  • the thickness of the solid electrolyte 200 may be thinner than the thickness set so as not to self-discharging when the liquid metal battery has a liquid electrolyte.
  • the metal ions from the liquid cathode are infiltrated into the liquid electrolyte and then moved to the liquid anode, so that self discharge is generated.
  • the electrolyte 200 in the solid state since the electrolyte 200 in the solid state is used during operation, the amount of the metal ions that are infiltrated from the liquid cathode 300 is greatly reduced, so that the metal ions by the solid electrolyte 200 Movement of the liquid metal battery may be prevented even if the solid electrolyte 200 has a thin thickness.
  • the solid electrolyte 200 not only separates the liquid anode 100 and the liquid cathode 300, but also surrounds the liquid cathode 300 between the liquid cathode 300 and the liquid current collector 150. May be further extended upwards.
  • the volume of the liquid cathode 300 may also expand or contract. A portion extending upward of the solid electrolyte 200 may be expanded in the solid electrolyte 200 even if the volume of the liquid cathode 300 expands.
  • the accommodated liquid negative electrode 300 may have an appropriate height so as not to overflow the outside of the receiving space of the solid electrolyte 200.
  • the liquid anode 100 leaks through a gap between the liquid anode 100 and the cathode current collector 150 when the volume of the liquid anode 100 is expanded, thereby causing the liquid metal to leak.
  • the risk of shorting the battery can be prevented, and the liquid positive electrode 100 can be more tightly sealed.
  • the positive electrode current collector 150 may accommodate the liquid positive electrode 100, the solid electrolyte 200, and the liquid negative electrode 300, and may at least partially accommodate the negative electrode current collector 350.
  • the liquid positive electrode 100, the solid electrolyte 200, and the liquid negative electrode 300 may be sealed in the positive electrode current collector 150.
  • an empty space 410 may be positioned on the liquid cathode 300 to accommodate a volume change of the liquid anode 100 and / or the liquid cathode 300.
  • the empty space 410 may be maintained in a vacuum state by removing the gas remaining through the vacuum valve 400. As a result, a small amount of gases such as Ar, O 2 , and H 2 O remaining in the empty space 410 may be prevented from being reduced as the battery is reacted with the liquid cathode 300 and oxidized.
  • the negative electrode current collector 350 may have a spring shape, at least a part of which is immersed in the liquid negative electrode 300 and connected to the solid electrolyte 200.
  • the negative electrode current collector 350 supports the solid electrolyte 200 to be disposed on the liquid positive electrode 100, while maintaining the contact between the liquid positive electrode 100 and the solid electrolyte 200 when the volume of the liquid positive electrode expands. It may be elastically contracted to raise 200, and may be elastically stretched to lower the solid electrolyte 200 while maintaining contact between the liquid anode 100 and the solid electrolyte 200 when the volume of the liquid anode is contracted. have. In this case, since the liquid cathode 300 is disposed in the receiving space of the solid electrolyte 200, the contact with the solid electrolyte 200 is always maintained regardless of the volume expansion and contraction of the liquid anode 100.
  • the contact between the solid electrolyte 200 and the liquid anode 100 is maintained even when the volume of the liquid anode 100 expands or contracts, such that the ion movement distance through the solid electrolyte 200 is increased. It can be kept constant, and thus the electrical characteristics of the liquid metal battery can be maintained.
  • the current collector protection unit 370 may include an insulating material, and may partially wrap the outer surface of the negative electrode current collector 350 to prevent a short circuit with the positive electrode current collector 100.
  • 3A and 3B are cross-sectional views illustrating movement of a solid electrolyte when driving a liquid metal battery according to an embodiment of the present invention.
  • 3A and 3B only the liquid anode 100, the solid electrolyte 200, and the liquid cathode 300 are briefly illustrated for convenience of description.
  • FIG. 3A the state just before the liquid metal battery is discharged is shown.
  • the molten metal constituting the liquid cathode 300 when the liquid metal battery is being discharged (discharging), the molten metal constituting the liquid cathode 300, a metal cation (50) and an electron (e -) is dissociated by, e (e -) is
  • the negative electrode current collector 350 is transferred to an external circuit terminal, and the metal cation 50 may move to the liquid positive electrode 100 through the solid electrolyte 200.
  • the composition of the liquid anode 100 may be changed to a liquid alloy containing the metal cation 50 from the liquid cathode 300.
  • the volume of the liquid anode 100 starts to increase.
  • the liquid anode 100 may expand in the depth direction, and the solid electrolyte 200 may move upward.
  • the solid electrolyte 200 is moved upward by the elastic contraction of the negative electrode current collector 350, so that the contact with the liquid positive electrode 100 can be maintained well.
  • FIG. 3B the state just before the liquid metal battery is charged is illustrated.
  • electrons provided through the negative electrode current collector 350 from an external circuit terminal are dissociated from the liquid alloy included in the liquid anode 100 to be solid electrolyte (
  • the volume of the liquid cathode 300 is increased, the volume of the liquid anode 100 is reduced.
  • the liquid anode 100 may shrink in the depth direction, and the solid electrolyte 200 may move downward.
  • the solid electrolyte 200 is moved downward by its own density and elastic extension of the negative electrode current collector 350, so that the contact with the liquid positive electrode 100 can be maintained well.
  • FIG. 4 is a cross-sectional view showing a solid electrolyte of a liquid metal battery according to an embodiment of the present invention.
  • the solid electrolyte 200 of the liquid metal battery may have a curved shape between the liquid anode 100 and the liquid cathode 300.
  • the solid electrolyte 200 may include a flat portion 201 parallel to the surface of the liquid cathode 300, and a plurality of recesses 203 bent upward or downward from the flat portion 201.
  • the depression 203 is formed to increase the ion transport area of the liquid anode 100 and the liquid cathode 300 sandwiching the solid electrolyte 200, and the thickness of the depression 203 is the flat portion 201. It may be less than or equal to the thickness of. This is because when the thickness of the recessed portion 203 is thicker than the flat portion 201, the effect of increasing the ion transport area of the liquid anode 100 and the liquid cathode 300 with the solid electrolyte 200 therebetween becomes small.
  • the solid electrolyte 200 includes the depression 203 that is bent upward or downward, an area in which the ions 50 may move between the liquid anode 100 and the liquid cathode 300 may be increased.
  • electrical characteristics such as charge and discharge rates of the liquid metal battery including the solid electrolyte 200 may be improved.
  • the negative electrode current collector 350 in which the electrons 70 are collected may be connected to the flat portion 350 to stably provide an elastic force with respect to the vertical movement of the solid electrolyte 200.
  • stress is concentrated on the recessed portion to which the negative electrode current collector 350 is connected, and the recessed portion may be formed by repeated vertical movement of the solid electrolyte 200. This is because self-discharge may be caused by damage to 203).
  • the depressions 203 that are bent downward from the flat portion 201 of the solid electrolyte 200 to a predetermined height H are shown.
  • the solid electrolyte 200 may be formed to have a plurality of depressions 203 arranged entirely without the flat portion 201, or one U-shaped curved portion 201 of the solid electrolyte 200 may be curved.
  • the depression 203 may be formed.
  • FIG. 5 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • a predetermined space may be defined between a vertically extending side of the positive electrode current collector 150 and a vertically extending side of the solid electrolyte 200. Accordingly, during volume expansion and contraction of the liquid anode 100, the liquid anode 100 may contact the side of the solid electrolyte 200 as well as the lower portion of the solid electrolyte 200. However, the height A in which the expanded liquid anode 100 is in contact with the side of the solid electrolyte 200 may not exceed the height of the side of the solid electrolyte 200.
  • the ion transport area can be increased, and the electrical characteristics of the liquid metal battery are improved. Can be.
  • FIG. 6 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • the liquid metal battery according to the present embodiment is the same as the embodiment shown in FIG. 1 except that the negative electrode current collector has a plurality of spring shapes 350a, 350b, and 350c, and therefore, the same component may be used. The description is omitted.
  • the negative electrode current collector 350 since the negative electrode current collector 350 has a plurality of springs 350a, 350b, and 350c shapes, a current collecting area through which electrons dissociated in the liquid negative electrode 300 can be greatly increased. . In detail, since the negative electrode current collector 350 has a plurality of spring shapes, the surface area of the portion immersed in the liquid negative electrode 300 may be increased, thereby improving electrical characteristics such as capacitance of the liquid metal battery. Can be.
  • the vertical movement of the solid electrolyte 200 may be more smoothly performed due to elastic elongation and elastic contraction.
  • the contact with the solid electrolyte 200 according to the volume change of may be better maintained.
  • FIG. 7 is a cross-sectional view showing a liquid metal battery according to an embodiment of the present invention.
  • the liquid metal battery according to the present embodiment is the same as the embodiment shown in FIG. 1 except that the cathode current collector 150 further has a spring shape 170 connected to the solid electrolyte 200. Do.
  • the positive electrode current collector 150 has a spring shape 170 connected to the solid electrolyte, thereby increasing the current collecting area of the positive electrode current collector 150 in contact with the liquid positive electrode 100, as well as the solid electrolyte. Elastic elongation and contraction with respect to 200 can be made more gentle. For example, when it is difficult to support the solid electrolyte 200 only by the spring of the negative electrode current collector 350, the spring 170 of the positive electrode current collector 150 connected to the lower portion of the solid electrolyte 200 is elastically stretched. By further supporting the solid electrolyte 200, the vertical movement of the solid electrolyte 200 may be smoother. According to an embodiment, the spring 170 of the positive electrode current collector 150 and the spring 350 of the negative electrode current collector have substantially the same elastic modulus, so that the elastic movement of the solid electrolyte 200 may be more smoothly performed. .
  • FIG. 8 is a cross-sectional view illustrating a liquid metal battery according to an embodiment of the present invention.
  • the current collecting area of the negative electrode current collector 350 and the current collecting area of the positive electrode current collector 170 may respectively increase, and accordingly, the electrical capacity such as the capacitance of the liquid metal battery is increased. Properties can be improved.
  • the upper and lower portions of the solid electrolyte 200 respectively, by supporting a plurality of springs by elastic expansion and elastic contraction, the vertical movement of the solid electrolyte 200 can be smoothed.
  • FIG. 9 is a cross-sectional view showing a liquid metal battery according to an embodiment of the present invention.
  • the protrusion 210 is formed on the outer surface of the solid electrolyte 200, and the protrusion 210 is accommodated on the inner surface of the positive electrode current collector 150. Except that the recess 151 is formed, it is the same as the embodiment shown in FIG.
  • the liquid positive electrode 100 of the liquid metal cell may partially leak into a gap between the side of the solid electrolyte 200 and the positive electrode current collector 150 according to volume expansion and contraction.
  • the liquid leaks along the side of the solid electrolyte 200 by the protrusion 210 formed on the outer surface of the solid electrolyte 200 and the recess 151 formed on the inner surface of the positive electrode current collector 150.
  • the protrusion 210 moves up and down in the space R of the recess 151 and is caught by the top or bottom of the recess 151, the volume expansion of the liquid anode 100 is within a predetermined range. Can be adjusted.
  • the protrusion 210 of the solid electrolyte 200 and the recess 151 of the positive electrode current collector 150 the liquid anode 100 surrounded by the solid electrolyte 200 and the positive electrode current collector 150 is more visible. It can be securely sealed.
  • the support force by the locking may be further provided so that the solid electrolyte 200 may be raised or lowered more stably on the liquid anode 100.
  • the protrusion 210 is formed on the outer surface of the solid electrolyte 200, and the recess 151 is formed on the inner surface of the positive electrode current collector 150.
  • a recessed portion may be formed on the outer side of the solid electrolyte 200, and a protrusion may be formed on the inner side of the positive electrode current collector.
  • an insulation protection part (not shown) may be further disposed between the outer side of the solid electrolyte 200 and the inner side of the positive electrode current collector 150.
  • the outer side of the solid electrolyte 200, the positive electrode current collector ( A protrusion may be formed on at least one of the inner side of the 150 and the insulation protection unit, and a recessed portion may be formed on at least the other.
  • the liquid metal cell includes a solid electrolyte, thereby reducing the metal ions of the liquid negative electrode infiltrated into the electrolyte to sufficiently separate the liquid negative electrode and the liquid positive electrode, thereby reducing self-discharge. You can.
  • the solid electrolyte can be moved in close contact with the liquid positive electrode and the liquid negative electrode according to the change in the depth direction due to the volume expansion and contraction of the liquid positive electrode. And it is possible to improve the electrochemical stability at the time of driving while sealing the cathode.
  • the solid electrolyte has a curved shape between the liquid anode and the liquid cathode, the surface area of the solid electrolyte capable of ion migration can be increased, thereby increasing the charge / discharge rate of the liquid metal battery.
  • the elastic movement of the solid electrolyte may be smoothed according to the volume change of the liquid positive electrode and the negative electrode, and the surface area collected in the liquid negative electrode may be increased.
  • the capacitance of the liquid metal battery can be improved.
  • the spring-shaped positive electrode current collector is further connected to the solid electrolyte through the liquid positive electrode, thereby increasing the positive electrode current collecting area and maintaining contact between the liquid positive electrode and the solid electrolyte according to the volume change of the liquid positive electrode. .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Abstract

L'invention concerne une batterie à métal liquide. Spécifiquement, une batterie à métal liquide comprend : une anode liquide; un électrolyte solide disposé sur l'anode liquide; une cathode liquide disposée sur l'électrolyte solide; un collecteur de courant d'anode en contact avec l'anode liquide; et un collecteur de courant de cathode en forme de ressort qui passe à travers la cathode liquide pour être connecté à l'électrolyte solide.
PCT/KR2016/010287 2016-09-09 2016-09-12 Batterie à métal liquide Ceased WO2018048002A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0116349 2016-09-09
KR1020160116349A KR20180029140A (ko) 2016-09-09 2016-09-09 액체금속전지

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WO2018048002A1 true WO2018048002A1 (fr) 2018-03-15

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CN110429271A (zh) * 2019-08-12 2019-11-08 易航时代(北京)科技有限公司 一种高温液态金属锂电池及其制备方法
CN113594558A (zh) * 2021-07-06 2021-11-02 华中科技大学 一种液态金属电池及其制备方法

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KR102232831B1 (ko) 2020-05-21 2021-03-26 국방과학연구소 액체 금속 전지 및 이를 포함하는 에너지 저장 장치

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US20110014503A1 (en) * 2009-07-20 2011-01-20 David Bradwell Alkaline earth metal ion battery
US20120129056A1 (en) * 2010-03-12 2012-05-24 Sumitomo Electric Industries, Ltd. Negative electrode material for battery, negative electrode precursor material for battery, and battery
CN103280604B (zh) * 2013-05-14 2015-06-10 清华大学 一种浮体电解质液态储能电池单体结构

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Publication number Priority date Publication date Assignee Title
US3922176A (en) * 1973-01-03 1975-11-25 Electricity Council Electrochemical cells having a liquid alkali metal electrode
JPH06349520A (ja) * 1993-06-03 1994-12-22 Hitachi Ltd ベータアルミナ系固体電解質管の製造方法及びそれを用いた高温型二次電池
US20110014503A1 (en) * 2009-07-20 2011-01-20 David Bradwell Alkaline earth metal ion battery
US20120129056A1 (en) * 2010-03-12 2012-05-24 Sumitomo Electric Industries, Ltd. Negative electrode material for battery, negative electrode precursor material for battery, and battery
CN103280604B (zh) * 2013-05-14 2015-06-10 清华大学 一种浮体电解质液态储能电池单体结构

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CN110429271A (zh) * 2019-08-12 2019-11-08 易航时代(北京)科技有限公司 一种高温液态金属锂电池及其制备方法
CN110429271B (zh) * 2019-08-12 2021-02-05 易航时代(北京)科技有限公司 一种高温液态金属锂电池及其制备方法
CN113594558A (zh) * 2021-07-06 2021-11-02 华中科技大学 一种液态金属电池及其制备方法

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