Title:
COMPOSITE CURRENT COLLECTOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/245872
Kind Code:
A1
Abstract:
The present invention relates to the technical field of new materials, in particular to a composite current collector, and a preparation method therefor and the use thereof. The composite current collector comprises a polymer substrate layer and a diamond-like layer disposed on at least one surface of the polymer substrate layer, wherein the side of the diamond-like layer away from the polymer substrate layer is further provided with a metal layer; and in the diamond-like layer, the proportion of Csp3-Csp3 bonds is 40-88%. The diamond-like layer is compounded between the metal layer and the polymer substrate layer, and the proportion of different types of C-C bonds in the diamond-like layer is controlled, such that the hardness of the composite current collector can be effectively improved without too many adverse effects on the conductivity and flexibility of the composite current collector. In addition, by replacing a traditional pure metal foil with the polymer substrate layer compounded with the metal layer, the density of the current collector can be reduced, and when the prepared composite current collector is used in a secondary battery, the energy density of the secondary battery can be effectively improved.
Inventors:
LIU KE (CN)
LI ZHENGLIN (CN)
WANG CHENGHAO (CN)
WU YAHONG (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
LI ZHENGLIN (CN)
WANG CHENGHAO (CN)
WU YAHONG (CN)
LI XUEFA (CN)
ZHANG GUOPING (CN)
Application Number:
PCT/CN2022/116829
Publication Date:
December 28, 2023
Filing Date:
September 02, 2022
Export Citation:
Assignee:
YANGZHOU NANOPORE INNOVATIVE MATERIALS TECH LTD (CN)
International Classes:
H01M4/66; C23C14/18; C23C14/35
Foreign References:
| US20090061250A1 | 2009-03-05 | |||
| CN104488118A | 2015-04-01 | |||
| CN106654350A | 2017-05-10 | |||
| CN110896141A | 2020-03-20 | |||
| CN112670519A | 2021-04-16 | |||
| US20130045427A1 | 2013-02-21 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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