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Title:
MULTI-ELEMENT POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/207010
Kind Code:
A1
Abstract:
The present invention relates to the technical field of lithium ion batteries. Disclosed are a multi-element positive electrode material, and a preparation method therefor and the application thereof. The ratio I(006)/I(012), obtained by means of XRD, of the peak intensity I(006) of a (006) crystal plane to the peak intensity I(012) of a (012) crystal plane of the multi-element positive electrode material is greater than or equal to 0.8; and the ratio A(006)/A(012), obtained by means of XRD, of the peak area A(006) of the (006) crystal plane to the peak area A(012) of the (012) crystal plane of the multi-element positive electrode material is greater than or equal to 0.5. The multi-element positive electrode material has a specific structure, thereby significantly improving the structural stability of the positive electrode material, alleviating the problem of oxygen evolution in a high delithiation state, reducing the degree of occurrence of a side reaction between the positive electrode material and an electrolyte under a high voltage, and improving the electrochemical performance and safety of a lithium ion battery.

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Inventors:
WANG YU (CN)
YUE PENG (CN)
LIU YAFEI (CN)
CHEN YANBIN (CN)
Application Number:
PCT/CN2022/092619
Publication Date:
October 06, 2022
Filing Date:
May 13, 2022
Export Citation:
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Assignee:
BEIJING EASPRING MAT TECH CO LTD (CN)
International Classes:
H01M4/62
Foreign References:
CN110993936A2020-04-10
CN106784686A2017-05-31
CN112151789A2020-12-29
CN1356737A2002-07-03
CN105226266A2016-01-06
CN107275620A2017-10-20
CN111162271A2020-05-15
US20070026314A12007-02-01
US20160276664A12016-09-22
Other References:
See also references of EP 4156342A4
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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