Title:
POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET COMPRISING SAME, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/093679
Kind Code:
A1
Abstract:
A positive electrode material, a positive electrode sheet comprising same, and a battery. The positive electrode material has a special phase structure clearly different from that of a conventional lithium cobalt oxide material; a plurality of small charge and discharge plateaus may appear during the charging and discharging processes of the positive electrode material; and the advantages of the positive electrode material in terms of electrochemical performance, as compared with a conventional high-voltage lithium cobalt oxide material, lie in that the positive electrode material has a higher gram capacity exertion degree and has higher cycling performance under the conditions of the same charge-discharge cut-off voltage and the same charge-discharge rate. Specifically, compared with an undoped compound which belongs to the space group of P63mc and has an O2 phase accumulation structure, the compound has a higher gram capacity and better cycling performance due to the effect of potassium.
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Inventors:
ZENG JIAJIANG (CN)
XIA DINGGUO (CN)
LI SULI (CN)
XIA DINGGUO (CN)
LI SULI (CN)
Application Number:
PCT/CN2023/125242
Publication Date:
May 10, 2024
Filing Date:
October 18, 2023
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M4/36; H01M4/131; H01M4/525; H01M10/0525
Foreign References:
| US20160141606A1 | 2016-05-19 | |||
| CN105518912A | 2016-04-20 | |||
| CN112768687A | 2021-05-07 | |||
| CN113517418A | 2021-10-19 | |||
| CN114141999A | 2022-03-04 | |||
| JP2000294241A | 2000-10-20 | |||
| JP2000323140A | 2000-11-24 | |||
| US20160276665A1 | 2016-09-22 | |||
| CN116093271A | 2023-05-09 |
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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