Title:
HIGH-WELDABILITY COMPOSITE CURRENT COLLECTOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/000804
Kind Code:
A1
Abstract:
The present invention relates to a high-weldability composite current collector and a preparation method therefor. The high-weldability composite current collector comprises a thin film support layer, and alloy coating layers disposed on each of two opposite surfaces of the thin film support layer, an alloy coating layer comprising uniformly mixed metallic aluminum and metallic nickel. The present invention, by means of mixing metallic aluminum and metallic nickel, causes an alloy coating layer containing metallic nickel to have high weldability due to the excellent corrosion resistance and good weldability of metallic nickel, and causes the alloy coating layer having high weldability to be firmly welded to the thin film support layer, thereby effectively solving the problems of weak welding and false welding in a welding process, while also effectively ensuring the electrical performance and safety of a battery. In addition, the composite current collector of the present application has a wide application range and can be used in large quantities.
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Inventors:
WANG CHENGHAO (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
Application Number:
PCT/CN2022/116790
Publication Date:
January 04, 2024
Filing Date:
September 02, 2022
Export Citation:
Assignee:
YANGZHOU NANOPORE INNOVATIVE MATERIALS TECH LTD (CN)
International Classes:
H01M4/66; H01M4/64
Foreign References:
| CN114927700A | 2022-08-19 | |||
| CN113422062A | 2021-09-21 | |||
| CN110943227A | 2020-03-31 | |||
| CN112186197A | 2021-01-05 | |||
| CN108754245A | 2018-11-06 | |||
| CN108531793A | 2018-09-14 | |||
| JP2019181941A | 2019-10-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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