Title:
ELECTRODE PLATE, SECONDARY BATTERY AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/185743
Kind Code:
A1
Abstract:
Provided in the present application are an electrode plate, a secondary battery and a terminal device. The electrode plate comprises a current collector and an active material layer coated on at least one side surface of the current collector. The active material layer comprises a first sub-layer and a second sub-layer, which are stacked, wherein the second sub-layer is arranged between the first sub-layer and the current collector; and the first sub-layer comprises first active particles, the second sub-layer comprises second active particles, and the anti-fracturing performance of the first active particles is superior to that of the second active particles. The electrode plate has a relatively good anti-fracturing performance, and can be used for improving the safety performance of the electrode plate and a secondary battery under a high roll pressure.
Inventors:
TIAN LEILEI (CN)
SONG XIAONA (CN)
WU YILAN (CN)
ZAN YONGXIANG (CN)
SONG XIAONA (CN)
WU YILAN (CN)
ZAN YONGXIANG (CN)
Application Number:
PCT/CN2023/084116
Publication Date:
October 05, 2023
Filing Date:
March 27, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01M4/36; H01M10/0525
Domestic Patent References:
| WO2015045719A1 | 2015-04-02 |
Foreign References:
| CN115498150A | 2022-12-20 | |||
| CN110660961A | 2020-01-07 | |||
| CN101378113A | 2009-03-04 | |||
| CN108630945A | 2018-10-09 | |||
| CN113193168A | 2021-07-30 | |||
| JP2019140054A | 2019-08-22 |
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