Title:
NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/240612
Kind Code:
A1
Abstract:
The present application relates to a negative electrode plate. The negative electrode plate comprises: a current collector; a first negative electrode material layer, which is arranged on at least one surface of the current collector and comprises a first negative electrode active material; and a second negative electrode material layer, which is arranged on the first negative electrode material layer and comprises a second negative electrode active material, wherein the first negative electrode material layer has a porosity Q1, the second negative electrode material layer has a porosity Q2, and 1.11≤Q2/Q1≤1.45. In addition, the present application further relates to a secondary battery, a battery module, a battery pack and an electric device, which comprise the negative electrode plate. The negative electrode plate, the secondary battery, the battery module, the battery pack and the electric device of the present application have improved battery capacity and charging performance.
Inventors:
CHAI ZHISHENG (CN)
CHI QINGKUI (CN)
JIN HAIZU (CN)
CHI QINGKUI (CN)
JIN HAIZU (CN)
Application Number:
PCT/CN2022/099515
Publication Date:
December 21, 2023
Filing Date:
June 17, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/134; H01M4/133; H01M4/36
Foreign References:
| CN113875049A | 2021-12-31 | |||
| CN110867560A | 2020-03-06 | |||
| CN113875046A | 2021-12-31 | |||
| CN113497218A | 2021-10-12 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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