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1. WO2022204962 - ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Publication Number WO/2022/204962
Publication Date 06.10.2022
International Application No. PCT/CN2021/084051
International Filing Date 30.03.2021
IPC
H01M 4/62 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/0567 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0567characterised by the additives
H01M 10/0525 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
CPC
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 4/623
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
621Binders
622being polymers
623fluorinated polymers
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 宁德新能源科技有限公司 NINGDE AMPEREX TECHNOLOGY LIMITED [CN]/[CN]
Inventors
  • 蔡小虎 CAI, Xiaohu
Agents
  • 北京柏杉松知识产权代理事务所(普通合伙) PATENTSINO IP FIRM
Priority Data
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
(FR) DISPOSITIF ÉLECTROCHIMIQUE ET DISPOSITIF ÉLECTRONIQUE
(ZH) 一种电化学装置和电子装置
Abstract
(EN) The present application provides an electrochemical device and an electronic device. The electrochemical device comprises a positive electrode, the positive electrode comprises a current collector and a positive electrode mixture layer provided on at least one surface of the current collector, and the positive electrode mixture layer comprises a positive electrode active substance and a binder. The binder comprises a fluoropolymer. In an XRD diffraction pattern of the fluoropolymer, a diffraction peak A appears at 25° to 27°, and corresponds to a (111) crystal plane; a diffraction peak B appears at 37° to 39°, and corresponds to a (022) crystal plane; an area ratio between the diffraction peak A and the diffraction peak B satisfies: 1≤A(111)/B(022)≤4. The positive electrode of the present application has high flexibility and compaction density, thereby mitigating a brittle fracture problem of the positive electrode.
(FR) La présente demande concerne un dispositif électrochimique et un dispositif électronique. Le dispositif électrochimique comprend une électrode positive, l'électrode positive comprend un collecteur de courant et une couche de mélange d'électrode positive disposée sur au moins une surface du collecteur de courant, et la couche de mélange d'électrode positive comprend une substance active d'électrode positive et un liant. Le liant comprend un polymère fluoré. Dans un motif de diffractométrie aux rayons X du polymère fluoré, un pic de diffraction A apparaît de 25° à 27°, et correspond à un plan cristallin (111) ; un pic de diffraction B apparaît de 37° à 39°, et correspond à un plan cristallin (022) ; un rapport de surface entre le pic de diffraction A et le pic de diffraction B satisfait : 1 ≤ A (111)/B (022) ≤ 4. L'électrode positive de la présente demande présente une flexibilité et une densité de compactage élevées, ce qui permet d'atténuer un problème de rupture fragile de l'électrode positive.
(ZH) 本申请提供了一种电化学装置和电子装置,其中,电化学装置包括正极,正极包括集流体和设置于集流体的至少一个表面上的正极合剂层,正极合剂层中包括正极活性物质和粘结剂。粘结剂包括含氟聚合物,含氟聚合物的XRD衍射图谱中,在25°至27°处出现衍射峰A,对应于(111)晶面,在37°至39°处出现衍射峰B,对应于(022)晶面,衍射峰A和衍射峰B之间的面积比满足:1≤A(111)/B(022)≤4。本申请的正极具有高的柔韧性及压实密度,从而改善正极的脆断问题。
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