Title:
SILICON-DOPED GRAPHENE NEGATIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD, SECONDARY BATTERY AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/082292
Kind Code:
A1
Abstract:
The present application relates to a negative electrode active material, comprising graphene and a silicon-containing material provided in the graphene. The negative electrode active material comprises pores, wherein the volume of micropores having apertures of less than 2 nm is 0.1-0.80 cm3/g, and the volume of mesopores having apertures within the range of 2-50 nm is 0.12-0.45 cm3/g. The present application also relates to a preparation method therefor, a secondary battery and an electrical device. The volumes of micropores and mesopores of the negative electrode active material are increased, thereby increasing the gram capacities thereof, such that a corresponding battery has good fast charging capabilities and cycle performance.
Inventors:
ZHOU GUANGPENG (CN)
ZHEN XIAOFENG (CN)
ZHANG HAIMING (CN)
WANG BANGYONG (CN)
ZHEN XIAOFENG (CN)
ZHANG HAIMING (CN)
WANG BANGYONG (CN)
Application Number:
PCT/CN2022/126798
Publication Date:
April 25, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/36; H01M10/0525
Foreign References:
| KR20150060459A | 2015-06-03 | |||
| KR20130015719A | 2013-02-14 | |||
| CN102569756A | 2012-07-11 | |||
| CN115088100A | 2022-09-20 | |||
| CN103094573A | 2013-05-08 |
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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