Title:
SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND ELECTRICAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/082264
Kind Code:
A1
Abstract:
Provided is a secondary battery, comprising a positive electrode sheet. The positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer provided on at least one surface of the positive electrode current collector. The positive electrode film layer comprises a conductive agent, the conductive agent comprising first conductive carbon black and second conductive carbon black, and the specific surface area of the second conductive carbon black being greater than the specific surface area of the first conductive carbon black. In addition, further provided are a manufacturing method for the secondary battery, and an electrical apparatus. The secondary battery achieves relatively low internal resistance, and improves the battery energy density and cycle performance at the same time.
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Inventors:
ZHUANG HENGXU (CN)
WU YANYING (CN)
WANG XINGHUI (CN)
WU YANYING (CN)
WANG XINGHUI (CN)
Application Number:
PCT/CN2022/126669
Publication Date:
April 25, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0525; H01M4/139; H01M4/62
Foreign References:
| CN114284465A | 2022-04-05 | |||
| CN109935906A | 2019-06-25 | |||
| CN1967915A | 2007-05-23 | |||
| CN102903888A | 2013-01-30 | |||
| CN1770516A | 2006-05-10 | |||
| JP2004207034A | 2004-07-22 | |||
| CN109841834A | 2019-06-04 | |||
| CN111525137A | 2020-08-11 | |||
| JP2010027458A | 2010-02-04 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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