WO2021181887A1 - 電極の製造方法および電極合材 - Google Patents

電極の製造方法および電極合材 Download PDF

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Publication number
WO2021181887A1
WO2021181887A1 PCT/JP2021/001562 JP2021001562W WO2021181887A1 WO 2021181887 A1 WO2021181887 A1 WO 2021181887A1 JP 2021001562 W JP2021001562 W JP 2021001562W WO 2021181887 A1 WO2021181887 A1 WO 2021181887A1
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WIPO (PCT)
Prior art keywords
electrode mixture
sheet
electrode
binder
peripheral speed
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/JP2021/001562
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English (en)
French (fr)
Japanese (ja)
Inventor
礼子 泉
真一郎 近藤
大輔 加藤
拓弥 神
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.)
Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to JP2022505805A priority Critical patent/JP7668475B2/ja
Priority to US17/909,151 priority patent/US12531230B2/en
Priority to EP21766832.6A priority patent/EP4120392A4/en
Priority to CN202180018335.4A priority patent/CN115210905A/zh
Publication of WO2021181887A1 publication Critical patent/WO2021181887A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H01G11/32—Carbon-based
    • H01G11/38—Carbon pastes or blends; Binders or additives therein
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H01G11/50—Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • 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
    • 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
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of 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
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621—Binders
    • H01M4/622—Binders being polymers
    • 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
    • H01M4/621—Binders
    • H01M4/622—Binders being polymers
    • H01M4/623—Binders being polymers fluorinated polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • 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
    • H01M2004/028—Positive electrodes
    • 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

  • an electrode manufacturing method and an electrode mixture capable of producing an electrode mixture sheet having excellent moldability and high breaking strength.
  • Lithium transition metal composite oxide is generally used as the positive electrode active material 21 (positive electrode active material).
  • Metal elements contained in the lithium transition metal composite oxide include Ni, Co, Mn, Al, B, Mg, Ti, V, Cr, Fe, Cu, Zn, Ga, Sr, Zr, Nb, In and Sn. , Ta, W and the like. Above all, it is preferable to contain at least one of Ni, Co and Mn.
  • the negative electrode active material 21 (negative negative active material) include natural graphite such as scaly graphite, massive graphite, and earthy graphite, artificial graphite such as massive artificial graphite (MAG), and graphitized mesophase carbon microbeads (MCMB). Carbon-based active material is used. Further, as the negative electrode active material, a Si-based active material that alloys with lithium may be used.
  • FIG. 3 is a diagram schematically showing the electrode mixture 20 constituting the electrode mixture sheet 12.
  • the electrode mixture 20 contains a particulate active material 21 and a fibrous binder 22, and the fibrous binder 22 adheres to the particle surface of the active material 21 to form the active material. Intertwined with 21. In other words, the active material 21 is held by the fibrous binder 22 that exists in a mesh shape. Such a form can also be confirmed in the electrode mixture sheet 12.
  • the electrode mixture 20 is a positive electrode mixture
  • the electrode mixture 20 preferably contains a conductive material 23.
  • the peripheral speed ratio is the ratio of the peripheral speed of one roll when the peripheral speed of one roll is 1.
  • the breaking peripheral speed ratio is the peripheral speed ratio at the time of breaking of the test sheet, and the peripheral speed of one roll is set to 1, and the peripheral speed of the other roll when the test sheet breaks is expressed as a ratio. Is.
  • the binder particles As described above, it is necessary to use particles having a volume-based median diameter (D50) of 5 to 100 ⁇ m as the binder particles.
  • D50 volume-based median diameter
  • the electrode mixture 20 can be produced in which the particle cracking of the active material 21 is suppressed and the amount of the conductive material 23 incorporated into the fibrous binder 22 is small.
  • the binder particles having a D50 of more than 100 ⁇ m are used, for example, a large shearing force, long-term treatment, etc.
  • the processing time (time for applying a shearing force to the material) in the first step is preferably 0.5 to 10 minutes, more preferably 1 to 5 minutes.
  • binder particles having a D50 of 5 to 100 ⁇ m are used in the production of the electrode mixture, with a relatively low shear force and in a short time. It is necessary to perform a mixing process.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
PCT/JP2021/001562 2020-03-11 2021-01-19 電極の製造方法および電極合材 Ceased WO2021181887A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2022505805A JP7668475B2 (ja) 2020-03-11 2021-01-19 電極の製造方法および電極合材
US17/909,151 US12531230B2 (en) 2020-03-11 2021-01-19 Method for producing electrode and electrode mixture
EP21766832.6A EP4120392A4 (en) 2020-03-11 2021-01-19 PROCESS FOR PRODUCING ELECTRODE AND ELECTRODE MIXTURE
CN202180018335.4A CN115210905A (zh) 2020-03-11 2021-01-19 电极的制造方法和电极复合材料

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-041959 2020-03-11
JP2020041959 2020-03-11

Publications (1)

Publication Number Publication Date
WO2021181887A1 true WO2021181887A1 (ja) 2021-09-16

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PCT/JP2021/001562 Ceased WO2021181887A1 (ja) 2020-03-11 2021-01-19 電極の製造方法および電極合材

Country Status (5)

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US (1) US12531230B2 (https=)
EP (1) EP4120392A4 (https=)
JP (1) JP7668475B2 (https=)
CN (1) CN115210905A (https=)
WO (1) WO2021181887A1 (https=)

Cited By (18)

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CN114784220A (zh) * 2022-04-29 2022-07-22 三一技术装备有限公司 干法电极制备方法
CN115207290A (zh) * 2022-07-13 2022-10-18 天津力神超电科技有限公司 超级电容器及锂离子电池电极膜及其制备方法
JP2023519003A (ja) * 2021-01-27 2023-05-09 エルジー エナジー ソリューション リミテッド 乾式電極用フリースタンディングフィルム、その製造装置、これを含む乾式電極、および二次電池
JPWO2023119814A1 (https=) * 2021-12-23 2023-06-29
WO2024154810A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2024154803A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2024154773A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2024154806A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 電気化学デバイス用合剤自立膜、電極、及び、電気化学デバイス
WO2024154805A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、固体二次電池用バインダー、電解質層用合剤、電極合剤、電極、及び、固体二次電池
WO2024154777A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 電気化学デバイス用合剤、電気化学デバイス用合剤シート、電極、及び、電気化学デバイス
WO2024154809A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 フッ素系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2024154786A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 電気化学デバイス用合剤、電気化学デバイス用合剤シート、電極、及び、電気化学デバイス
WO2024154807A1 (ja) 2023-01-18 2024-07-25 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2025005277A1 (ja) 2023-06-30 2025-01-02 ダイキン工業株式会社 ポリテトラフルオロエチレン、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
WO2025005273A1 (ja) 2023-06-30 2025-01-02 ダイキン工業株式会社 ポリテトラフルオロエチレン組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
JP2025093907A (ja) * 2023-12-12 2025-06-24 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
KR20250127336A (ko) 2023-01-18 2025-08-26 다이킨 고교 가부시키가이샤 테트라플루오로에틸렌계 폴리머, 전기 화학 디바이스용 바인더, 전극 합제, 전극, 및 이차 전지
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US12272813B1 (en) 2024-01-15 2025-04-08 Atlas Power Technologies Inc. Selected particle size dry electrode for storage devices

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See also references of EP4120392A4

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023519003A (ja) * 2021-01-27 2023-05-09 エルジー エナジー ソリューション リミテッド 乾式電極用フリースタンディングフィルム、その製造装置、これを含む乾式電極、および二次電池
JP7501970B2 (ja) 2021-01-27 2024-06-18 エルジー エナジー ソリューション リミテッド 乾式電極用フリースタンディングフィルム、その製造装置、これを含む乾式電極、および二次電池
JPWO2023119814A1 (https=) * 2021-12-23 2023-06-29
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JP2025093907A (ja) * 2023-12-12 2025-06-24 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池
JP7799216B2 (ja) 2023-12-12 2026-01-15 ダイキン工業株式会社 テトラフルオロエチレン系ポリマー組成物、電気化学デバイス用バインダー、電極合剤、電極、及び、二次電池

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