[go: up one dir, main page]

WO2024249476A2 - Boîtier de pile bouton - Google Patents

Boîtier de pile bouton Download PDF

Info

Publication number
WO2024249476A2
WO2024249476A2 PCT/US2024/031400 US2024031400W WO2024249476A2 WO 2024249476 A2 WO2024249476 A2 WO 2024249476A2 US 2024031400 W US2024031400 W US 2024031400W WO 2024249476 A2 WO2024249476 A2 WO 2024249476A2
Authority
WO
WIPO (PCT)
Prior art keywords
coin cell
stainless steel
sheet
aluminum
comprised
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.)
Pending
Application number
PCT/US2024/031400
Other languages
English (en)
Other versions
WO2024249476A3 (fr
Inventor
Deidre Strand
Justin DUTTON
Stacy REDMOND
Ye Zhu
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.)
Wildcat Discovery Technologies Inc
Original Assignee
Wildcat Discovery Technologies Inc
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 Wildcat Discovery Technologies Inc filed Critical Wildcat Discovery Technologies Inc
Publication of WO2024249476A2 publication Critical patent/WO2024249476A2/fr
Publication of WO2024249476A3 publication Critical patent/WO2024249476A3/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • 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 is in the field of battery technology.
  • Coin cells are used in many consumer applications and for electrochemical evaluation of materials, including variations on cathodes, anodes, and electrolytes.
  • the coin cells comprise a positive and negative lid as well as other battery components.
  • Lithium metal oxides have been used to formulate cathode materials for lithium ion batteries.
  • the cathodes are derived from a few basic crystallographic structure types, such as spinels, olivines, and layered oxide structures.
  • the layered oxide structures have included lithium-excess type structures, where additional lithium is present in the structure.
  • Typical materials of construction for the positive case are various stainless steels (e.g., 316L) which are subject to corrosion under some conditions which negatively affects the cell performance.
  • Aluminum electroplated coin cells have been commercially available by electroplating processes such as described in U.S. Pat. No. 7.250,102.
  • the process is multi-stepped including pretreatments and interlayers.
  • the process can result in coated cases with good electrochemical performance.
  • the yield of parts with good, blemish-free coatings can be quite low (less than ⁇ 50%).
  • the process is expensive due the multiple steps, usage of organic solvents, and requirement to be air-free.
  • Higher voltage cathodes have tended to be operated under more severe conditions than typical layered oxides resulting in coin cell cases requiring better corrosion resistance made by a high yield cost effective method. It would be desirable to provide a coin cell battery comprised of a higher voltage cathode that avoids corrosion problems and other desirable attributes such as safer batteries.
  • coin cells components may be manufactured from a bimetallic stainless steel/aluminum sheet by flanging the sheet to form the coin cell components, the bimetallic sheet being formed by pressing in the absence of annealing.
  • Coin cells having desired electrochemical performance may be produced by employing coin cell components such as a positive case and negative case formed by stamping (flanging) a bimetallic stainless steel/aluminum sheet that had been formed by pressing (clad sheet). They are are particularly useful with lithium ion electrolytes that are corrosive, such as those that contain a lithium salt (e.g., lithium bis(fluorosulfonyl)imide (LiFSI)). Under these conditions, the stainless steel of the cases may have accentuated corrosion resulting in excess residual current in the cell as well as corrosion by-products which are detrimental to cell performance.
  • LiFSI lithium bis(fluorosulfonyl)imide
  • a first illustration is a method to form a coin cell case component comprising stamping a bimetallic sheet comprised of stainless steel fused to aluminum to form a coin cell case component, the bimetallic sheet being formed by pressing a stainless steel sheet and an aluminum sheet in the absence of annealing after pressing. It has been discovered that the bimetallic sheet may be formed in the absence of annealing after being formed without undesirable warpage during the formation of the coin cell (flanging).
  • FIG. 1 Another illustration is a coin cell comprised of a coin cell component of the first illustration and a cathode comprised of a disordered rock salt.
  • a further illustration is a coin cell comprised of the coin cell component of the first illustration and an electrolyte comprised of a lithium salt (e.g., lithium bis(fluorosulfonyl)imide salt).
  • a lithium salt e.g., lithium bis(fluorosulfonyl)imide salt
  • FIG. 1 shows the capacity retention v. cycles of coin cells of this invention and not of this invention.
  • a rate “C” refers to either (depending on context) the discharge current as a fraction or multiple relative to a “1 C” current value under which a battery (in a substantially fully charged state) would substantially fully discharge in one hour, or the charge current as a fraction or multiple relative to a “1 C” current value under which the battery (in a substantially fully discharged state) would substantially fully charge in one hour.
  • Ranges presented herein are inclusive of their endpoints.
  • the range 1 to 3 includes the values 1 and 3 as well as the intermediate values.
  • the method to form a coin cell component comprises stamping a bimetallic sheet comprised of stainless steel and aluminum fused together by pressing a stainless steel sheet and aluminum sheet.
  • the pressing to form the bimetallic sheet may be any suitable such as those known in the ail.
  • the pressing may be by uniaxial pressing or by roll pressing with or without application of heat other than that created by the pressing itself.
  • An exemplary method that may be suitable includes those described in KR10037650, but to reiterate it is desirable that the pressing is by cold working (i.e., in the absence of the application of external heating).
  • the pressing pressure may be any suitable to realize a reduction of the stainless steel sheet thickness that induces minimal internal stresses in the stainless steel which can cause warpage when stamping the coin cell case components.
  • the reduction in the aluminum sheet may be commensurate with the stainless steel sheet, but in many instances the ductility of the aluminum sheet may be more ductile than the stainless steel sheet and as such may undergo greater reduction in thickness such as a factor of 1.1, 1.2, 1.3, 1.4 or 1.5, or to 10 or 5 times the reduction in thickness of the stainless steel sheet.
  • the thickness aluminum layer of the bimetallic sheet is substantially less than the bimetallic sheet’s stainless steel layer with the aluminum layer typically being about 0.01, 0.02, or 0.04 to 0.25 times the stainless steel layer thickness.
  • annealing may impart undesirable stresses due the temperature being limited by the melting temperature of the aluminum and as such the stress state of the aluminum may be altered substantially whereas the stainless steel stress state may not be. This alteration of the stress state of the bimetallic sheet may cause undesirable warpage when forming the coin cell case component.
  • the bimetallic sheet may be any thickness useful to make a coin cell case component such as common in the art. Illustratively, the thickness may be from about 100, 150 or 200 micrometers to 500, 400, 300 or 250 micrometers thick.
  • the stainless steel may be any useful for forming a coin cell case component such as those known in the art. Exemplary stainless steel alloys may include AISI (American Iron and Steel Institute stainless steels such as those described in Table 16.24 of Eshbach’s Handbook of Engineering Fundamentals, 4 th Ed., John Wiley and Sons, Inc., 1990.
  • the stainless steel for example, may be austenitic, martensitic, or ferritic. Each type may be more applicable depending on the circumstances (e.g., corrosion resistance in a particular application).
  • the aluminum sheet may be comprised of aluminum or alloy thereof. Alloys of aluminum may be those having an aluminum content of at least 99.5%.
  • the stamping of the bimetallic sheet may be performed by any suitable stamping/ironing technique such as those known in the art such as described in EP 0762519 and U.S. Pat. Nos. 3,820,368; 4,457,150; 5,787,752; and 6,485,863.
  • the coin cell may have any other components useful to make a coin cell with examples being described in U.S. Pat. No. 4,246,326 and U.S. Pub. No. 2013/0143104.
  • the cell components may include a battery lid, a cathode, an anode, a separator, or any combination thereof.
  • the coin cell is comprised of a cathode comprised of an oxide or phosphate in which the cathode has an operating voltage of at least 4.3 or 4.5 volts.
  • Examples of such cathodes include those comprised of one of more of Cu, Co, Ni, and Mn and may be a layer oxide, olivine, spinel or disordered rock salt oxide.
  • the coin cell may be comprised of a liquid electrolyte.
  • the liquid electrolyte is comprised of a solvent and a salt (e.g., lithium salt).
  • This electrolyte solution may include one or more solvents such as those known in the art for making lithium ion batteries such as those described by U.S. Pat. Nos. 10,367,232 and 11,094,966 each incorporated herein by reference.
  • the electrolyte salt and/or lithium salt may include first and second salts that are different from each other.
  • the electrolyte salt and/or the lithium salt may include one or more of (oxalato)borate (LiBOB), lithium bis(pentafluoroethylsulfonyl)imide (Li- BETI), lithium bis(fluorosulfonyl)imide (LiFSI), lithium tetrafluoroborate (LiBF4), lithium trifluoromethanesulfonate (LiTriflate), lithium hexafluoroarsenate (LiAsFe), lithium bis(trifluoromethanesulfonimide) (LiTFSI), and lithium hexafluoro- phosphate (LiPFe), lithium nitrate (LiNCh), LiN(SO2CFs)2, LiN(SO2F)2, LiCFvSCh, LiCICU, lithium difluoro oxalato
  • Foils of 316L stainless steel and 1100 aluminum alloy are coldworked to a 30% reduction of the thickness of the starting stainless steel.
  • the final bimetallic sheet has thickness of about 0.25 mm stainless steel and about 12 micrometers aluminum. Mechanical testing is performed on the resulting metal bilayer, demonstrating a yield strength of 125.6 Kpsi, an ultimate tensile strength of 141.0 Kpsi, and elongation of 11.9%. This is indicative of a 30% reduction in the stainless steel.
  • the sheet is stamped into coin cell components (positive and negative case).
  • Electrochemical testing is performed on assembled coin cells.
  • the cells are formed in a high purity argon filled glove box (M-Braun, 02 and humidity content ⁇ 0.1 ppm).
  • M-Braun high purity argon filled glove box
  • NMC811 a commercial high Ni NMC (Ni content >80%, referred to herein as NMC811)) active material is mixed with polyvinylidene fluoride (PVDF), carbon black powder, and liquid 1 -methyl- 2-pyrolidinone (NMP) to form a slurry.
  • PVDF polyvinylidene fluoride
  • carbon black powder carbon black powder
  • NMP liquid 1 -methyl- 2-pyrolidinone
  • the resulting slurry is deposited on an aluminum current collector and dried to form a composite cathode film.
  • a commercial graphite active material is mixed with Carboxymethyl cellulose binder (CMC) and Styrene-Butadiene Rubber (SBR) Binder, carbon black powder, and water to form a slurry.
  • CMC Carboxymethyl cellulose binder
  • SBR Styrene-Butadiene Rubber
  • carbon black powder carbon black powder
  • water water
  • the resulting slurry is deposited on a copper current collector and dried to form a composite anode film.
  • Each battery cell includes the composite cathode film, a polypropylene separator, and the composite anode film.
  • the cell is filled with a liquid electrolyte consisting of 10 weight % lithium hexafluorophosphate, 6 weight % LiFSI in ethylene carbonate/ethyl methyl carbonate/dimethyl carbonate (20/16/48 by volume) with 2 weight % vinylene carbonate and 0.5 weight % tetravinylsilane.
  • the battery cell is sealed and initially cycled at ambient temperature using 0.1C charge to upper cutoff voltage 4.2V followed by constant voltage hold until the current drops to 0.05C and then discharges to 2.8V using 0.1C constant current.
  • the cycle is repeated one more time prior to faster rate cycling (0.5C charging to 4.05V then 0.33C charge to 4.2V; 0.5C discharge to 2.8V) at 55 °C for subsequent cycles.
  • These example coin cells Al-clad
  • coin cells “control” wherein the positive and negative cases are high quality Alumiplate electroplated aluminum (“Al-plate) case that have been inspected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Des composants de boîtier de pile bouton peuvent être fabriqués par un procédé comprenant l'estampage d'une feuille bimétallique constituée d'acier inoxydable fusionné à de l'aluminium pour former un composant de boîtier de pile bouton, la feuille bimétallique étant formée par un procédé comprenant le pressage d'une feuille d'acier inoxydable et d'une feuille d'aluminium en l'absence de recuit après le pressage. Des cellules de pile bouton constituées d'un boîtier positif ou négatif sont appropriées pour des batteries haute tension (= 4.3V) telles que celles ayant une cathode contenant un sel gemme désordonné et/ou un électrolyte liquide ayant un sel de lithium et un solvant.
PCT/US2024/031400 2023-06-01 2024-05-29 Boîtier de pile bouton Pending WO2024249476A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363470247P 2023-06-01 2023-06-01
US63/470,247 2023-06-01

Publications (2)

Publication Number Publication Date
WO2024249476A2 true WO2024249476A2 (fr) 2024-12-05
WO2024249476A3 WO2024249476A3 (fr) 2025-02-13

Family

ID=93658733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/031400 Pending WO2024249476A2 (fr) 2023-06-01 2024-05-29 Boîtier de pile bouton

Country Status (1)

Country Link
WO (1) WO2024249476A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2997741B2 (ja) * 1992-07-29 2000-01-11 セイコーインスツルメンツ株式会社 非水電解質二次電池及びその製造方法
JP3597150B2 (ja) * 2001-06-08 2004-12-02 石崎プレス工業株式会社 有機電解液二次電池および有機電解液二次電池の負極缶の製造方法
DE602007004334D1 (de) * 2006-06-08 2010-03-04 Eveready Battery Inc Verzinnte anodengehäuse für alkalibatterien
DE102008018172A1 (de) * 2008-04-03 2009-10-08 Varta Microbattery Gmbh Galvanische Zelle und Verfahren zu ihrer Herstellung
EP3982897A4 (fr) * 2019-06-13 2024-04-10 Fenwood Labs Inc. Batteries désactivées dans un milieu aqueux conducteur et leurs procédés de fabrication
US20230075028A1 (en) * 2021-08-30 2023-03-09 Wildcat Discovery Technologies, Inc Doped nickel-rich layered oxide material and lithium ion battery containing the same

Also Published As

Publication number Publication date
WO2024249476A3 (fr) 2025-02-13

Similar Documents

Publication Publication Date Title
JP5289576B2 (ja) 非水電解質二次電池の充電方法及び充電装置
US6780541B2 (en) Carbon electrode coated with porous metal film, its fabrication method and lithium secondary battery using the same
KR101120804B1 (ko) 리튬 2차 전지
EP2437331A2 (fr) Batterie secondaire au lithium à haute energie volumique
KR101344966B1 (ko) 리튬 이온 이차전지
KR20090087452A (ko) 리튬 2차 전지의 수명 추정 방법과 열화 억제 방법, 수명 추정기와 열화 억제기, 그것을 이용한 전지 팩, 충전기
KR20210023850A (ko) 이차 전지 정극용 스테인리스박 집전체
CN115133222A (zh) 同时抑制锂枝晶和过渡金属溶出的双涂层隔膜及制备方法和应用隔膜的锂金属电池
JP2000228196A (ja) 非水電解質二次電池
US20240021818A1 (en) Lithium manganese iron phosphate-based electrode for an electrochemical lithium ion cell
CN117253967B (zh) 一种熔融联合机械辊压制备二硫化锡/锂复合负极的方法
US4668594A (en) Rechargeable electrochemical apparatus and positive electrode thereof
JP2010027304A (ja) 正極集電体用アルミニウム箔
WO2024249476A2 (fr) Boîtier de pile bouton
US20030113632A1 (en) Oxidized titanium as a cathodic current collector
EP1009047B1 (fr) Plaque d'accumulateur et batterie
KR100359054B1 (ko) 도전성 슬러리로 표면처리된 금속산화물 양극, 그제조방법 및 이를 이용한 리튬이차전지
EP0586718B1 (fr) Méthode de fabrication de cellule nickel-hydrogène du type étanche
US5882820A (en) Anode for non-aqueous electrolyte cell and method of manufacturing the same
CN113169294A (zh) 改进锂离子电池中的离子液体电解质的性能的方法
US20040091781A1 (en) Lithium secondary battery and method for producing the same
HK1005052B (en) Method of manufacturing sealed type nickel-hydrogen cell
Zeng et al. The Role of Current Collector Corrosion on the Performance of Thermal Batteries
JP2001297762A (ja) 非水電解質二次電池
KR101868204B1 (ko) 전극활물질, 이를 포함하는 전극 및 이차전지

Legal Events

Date Code Title Description
DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)