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Title:
POSITIVE ELECTRODE SHEET, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND POWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/045369
Kind Code:
A1
Abstract:
Provided is a positive electrode sheet, comprising a coating layer and a current collector, wherein the coating layer is located on at least one surface of the current collector; and the coating layer comprises a first coating and a second coating. The first coating is coated on the surface of the current collector, and the second coating is coated on the surface of the first coating, wherein the first coating has a tortuosity of 3.01-4.93, and the second coating has a tortuosity of 2.11-2.87.

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Inventors:
WU YANYING (CN)
WANG XINGHUI (CN)
Application Number:
PCT/CN2022/094239
Publication Date:
March 30, 2023
Filing Date:
May 20, 2022
Export Citation:
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Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/02
Foreign References:
CN111864179A2020-10-30
CN113424348A2021-09-21
CN114256518A2022-03-29
US20190252676A12019-08-15
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
Download PDF:
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