Title:
CARBONACEOUS MATERIAL AND PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY AND ELECTRICAL DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/082309
Kind Code:
A1
Abstract:
The present application provides a carbonaceous material, a preparation method therefor, and a secondary battery and electrical device comprising the carbonaceous material. O element content in the carbonaceous material tested by means of X-ray photoelectron spectroscopy is denoted as A, and the O element content tested by means of an element analysis method is denoted as B. The carbonaceous material satisfies A/B≥3 and 5 wt％≤A≤20 wt％. The carbonaceous material provided in the present application enables the secondary battery to have significantly improved cycle performance and rate capabilities.
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Inventors:
CHEN XIAOXIA (CN)
MA YU (CN)
ZHANG XINXIN (CN)
OUYANG CHUYING (CN)
ZHENG XIAOJI (CN)
CHEN SHANGDONG (CN)
LIN WENGUANG (CN)
MA YU (CN)
ZHANG XINXIN (CN)
OUYANG CHUYING (CN)
ZHENG XIAOJI (CN)
CHEN SHANGDONG (CN)
LIN WENGUANG (CN)
Application Number:
PCT/CN2022/126837
Publication Date:
April 25, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/587
Domestic Patent References:
| WO2017029692A1 | 2017-02-23 |
Foreign References:
| CN109305683A | 2019-02-05 | |||
| CN109304197A | 2019-02-05 | |||
| CN109304196A | 2019-02-05 | |||
| US20190006675A1 | 2019-01-03 | |||
| CN109553085A | 2019-04-02 | |||
| CN109553080A | 2019-04-02 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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