Invention Grant
- Patent Title: Lithium metal composite oxide powder, positive electrode active substance for lithium secondary battery, positive electrode, and lithium secondary battery
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Application No.: US16979415Application Date: 2019-03-13
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Publication No.: US11990617B2Publication Date: 2024-05-21
- Inventor: Tomoya Kuroda , Yuichiro Imanari
- Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Rimon P.C.
- Priority: JP 18045955 2018.03.13
- International Application: PCT/JP2019/010297 2019.03.13
- International Announcement: WO2019/177032A 2019.09.19
- Date entered country: 2020-09-09
- Main IPC: H01M4/525
- IPC: H01M4/525 ; C01G53/00 ; H01M4/36 ; H01M4/505 ; H01M10/0525 ; H01M4/02
Abstract:
A lithium metal composite oxide powder including: secondary particles that are aggregates of primary particles, and single particles that are present independently of the secondary particles, wherein the lithium metal composite oxide is represented by composition formula (I), and the single particles have an average crushing strength exceeding 80 MPa:
Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (I)
wherein M is one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V, −0.1≤x≤0.2, 0≤y≤0.4, 0≤z≤0.4, and 0≤w≤0.1.
Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (I)
wherein M is one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V, −0.1≤x≤0.2, 0≤y≤0.4, 0≤z≤0.4, and 0≤w≤0.1.
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