Title:
MODIFIED CURRENT COLLECTOR FOR SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/098120
Kind Code:
A1
Abstract:
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.
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Inventors:
HO KAM PIU (CN)
JIANG YINGKAI (CN)
HUEN PRISCILLA (CN)
JIANG YINGKAI (CN)
HUEN PRISCILLA (CN)
Application Number:
PCT/CN2022/108701
Publication Date:
June 08, 2023
Filing Date:
July 28, 2022
Export Citation:
Assignee:
GUANGDONG HAOZHI TECH CO LIMITED (CN)
International Classes:
H01M4/66
Foreign References:
| US20200388820A1 | 2020-12-10 | |||
| CN112993262A | 2021-06-18 | |||
| CN106133862A | 2016-11-16 | |||
| CN105895921A | 2016-08-24 | |||
| JP2008192364A | 2008-08-21 |
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