Title:
COPPER COMPOSITE CURRENT COLLECTOR, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/011536
Kind Code:
A1
Abstract:
The present invention relates to the field of lithium ion batteries, and specifically to a copper composite current collector, a preparation method therefor and an application thereof. The preparation method for a copper composite current collector comprises the following steps: providing a polymer film; by using vacuum evaporation technology, making the polymer film pass through a copper-plated roller, and dividing the temperature of the copper-plated roller into a first temperature area and a second temperature area in the axial direction of the copper-plated roller, wherein the temperature in the first temperature area is 40-50℃, and the temperature in the second temperature area is 10-20℃; and evaporating metal copper under a vacuum condition, so as to plate copper metal layers on two surfaces of the polymer film. The copper composite current collector prepared by means of the preparation method for a copper composite current collector has a high specific surface area, and can reduce the interface resistance of a battery.
Inventors:
WANG CHENGHAO (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
Application Number:
PCT/CN2022/105810
Publication Date:
January 18, 2024
Filing Date:
July 14, 2022
Export Citation:
Assignee:
YANGZHOU NANOPORE INNOVATIVE MATERIALS TECH LTD (CN)
International Classes:
C23C14/24; H01M4/66
Foreign References:
| CN113748546A | 2021-12-03 | |||
| JP2000017426A | 2000-01-18 | |||
| CN109355634A | 2019-02-19 | |||
| CN107177820A | 2017-09-19 | |||
| US20220056575A1 | 2022-02-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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