Title:
POSITIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, AND POSITIVE ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRIC APPARATUS COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/065213
Kind Code:
A1
Abstract:
Provided in the present application are: a positive electrode active material, a preparation method therefor, and a positive electrode sheet, a secondary battery and an electric apparatus comprising same. The positive electrode active material comprises an inner core and a shell coating the inner core. The inner core comprises LimAxMn1-
yByP1-zCzO4-nDn, and the shell comprises borate XaBbOc and carbon. The shell comprises one or more coating layers, each of the coating layers independently comprising one or more of the borate XaBbOc and carbon. The positive electrode active material provided by the present application enables secondary batteries to have relatively high energy density, and meanwhile can improve the rate performance, the cycle performance and/or the high-temperature stability of secondary batteries.
Inventors:
YUAN TIANCI (CN)
JIANG YAO (CN)
ZHANG XINXIN (CN)
OUYANG CHUYING (CN)
WU LINGJING (CN)
KANG WEIBIN (CN)
CHEN SHANGDONG (CN)
JIANG YAO (CN)
ZHANG XINXIN (CN)
OUYANG CHUYING (CN)
WU LINGJING (CN)
KANG WEIBIN (CN)
CHEN SHANGDONG (CN)
Application Number:
PCT/CN2022/121868
Publication Date:
April 04, 2024
Filing Date:
September 27, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/58
Foreign References:
| CN104577115A | 2015-04-29 | |||
| CN109585797A | 2019-04-05 | |||
| CN103682266A | 2014-03-26 | |||
| CN102263263A | 2011-11-30 | |||
| CN102931404A | 2013-02-13 | |||
| CN103779566A | 2014-05-07 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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