Invention Application
- Patent Title: POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, PREPARING METHOD THEREOF AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
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Application No.: US17454209Application Date: 2021-11-09
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Publication No.: US20220255072A1Publication Date: 2022-08-11
- Inventor: Pilsang YUN , Hyunbeom KIM , Sangin PARK , Yongchan YOU
- Applicant: Samsung SDI Co., Ltd.
- Applicant Address: KR Yongin-si
- Assignee: Samsung SDI Co., Ltd.
- Current Assignee: Samsung SDI Co., Ltd.
- Current Assignee Address: KR Yongin-si
- Priority: KR10-2021-0013499 20210129
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M4/505 ; H01M10/0525 ; H01M4/04
Abstract:
A positive active material for a rechargeable lithium battery includes a lithium nickel-based metal composite oxide, wherein the positive active material includes secondary particles in which a plurality of primary particles are aggregated, a first boron coating portion present on the outer surfaces of the secondary particles, and a second boron coating portion present on surfaces of the primary particles inside the secondary particles, and a weight of the first boron coating portion is greater than a weight of the second boron coating portion.
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