WO2023098120 - MODIFIED CURRENT COLLECTOR FOR SECONDARY BATTERY
National phase entry:
Publication Number
WO/2023/098120
Publication Date
08.06.2023
International Application No.
PCT/CN2022/108701
International Filing Date
28.07.2022
Title **
[English]
MODIFIED CURRENT COLLECTOR FOR SECONDARY BATTERY
[French]
COLLECTEUR DE COURANT MODIFIÉ POUR BATTERIE SECONDAIRE
Applicants **
GUANGDONG HAOZHI TECHNOLOGY CO. LIMITED
Floor 3, No. 3 Factory, Keyuan 1 Road, Xiaohuangpu Residents Committee, Ronggui, Shunde District
Foshan, Guangdong 528305, CN
GRST INTERNATIONAL LIMITED
Flat 10, 12/F, Technology Park, 18 On Lai Street, Shatin, New Territories
Hong Kong, CN
Inventors
HO, Kam Piu
Unit 1222, 12/F, Building 19W, 19 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, CN
JIANG, Yingkai
Unit 1222, 12/F, Building 19W, 19 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, CN
HUEN, Priscilla
Unit 1222, 12/F, Building 19W, 19 Science Park West Avenue, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong, CN
Priority Data
PCT/CN2021/134986
02.12.2021
CN
PCT/CN2021/138811
16.12.2021
CN
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| * | |
International Searching Authority |
CNIPA
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Translation |
|
Recalculate
* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1583 | |
| EPO | Filing, Examination | 8814 | |
| Japan | Filing | 595 | |
| South Korea | Filing | 607 | |
| USA | Filing, Examination | 3310 |
Total: 14909 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
A modified current collector for a secondary battery is disclosed herein, comprising a substrate and a conductive layer applied on one side or both sides of the substrate, wherein the conductive layer comprises a conductive material, a binder material comprising a polymer, and a metal compound, and may additionally comprise a particulate material. Also provided herein is a cathode for a secondary battery, comprising the modified current collector and an electrode layer, wherein the electrode layer is located on the surface of the conductive layer. The presence of the conductive layer inhibits corrosion of the substrate and reduces interfacial resistance between the electrode layer and the substrate. In addition, the metal compound in the conductive layer reduces irreversible capacity loss due to SEI formation during initial charging of the battery. Consequently, batteries comprising the modified current collector exhibit exceptional electrochemical performance.[French]
L'invention concerne un collecteur de courant modifié pour une batterie secondaire, comprenant un substrat et une couche conductrice appliquée sur un côté ou sur les deux côtés du substrat, la couche conductrice comprenant un matériau conducteur, un matériau liant comprenant un polymère, et un composé métallique, et pouvant en outre comprendre un matériau particulaire. L'invention concerne également une cathode pour une batterie secondaire, comprenant le collecteur de courant modifié et une couche d'électrode, la couche d'électrode étant située sur la surface de la couche conductrice. La présence de la couche conductrice inhibe la corrosion du substrat et réduit la résistance interfaciale entre la couche d'électrode et le substrat. De plus, le composé métallique dans la couche conductrice réduit la perte de capacité irréversible due à la formation d'une SEI pendant la charge initiale de la batterie. Par conséquent, les batteries comprenant le collecteur de courant modifié présentent des performances électrochimiques exceptionnelles.