Invention Grant
- Patent Title: Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
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Application No.: US10821323Application Date: 2004-04-09
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Publication No.: US10153485B2Publication Date: 2018-12-11
- Inventor: Yosuke Hosoya , Yoshikatsu Yamamoto
- Applicant: Yosuke Hosoya , Yoshikatsu Yamamoto
- Applicant Address: JP
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP
- Agency: Sheridan Ross P.C.
- Priority: JPP2003-107509 20030411
- Main IPC: H01M4/48
- IPC: H01M4/48 ; H01M4/485 ; H01M4/131 ; H01M4/36 ; H01M4/525 ; H01M10/0525 ; H01M4/133 ; H01M4/505 ; H01M10/0587 ; H01M4/02
Abstract:
A positive electrode active material includes particles composed of a compound oxide; and coating layers composed of a compound oxide formed on at least parts of the surfaces of the particles. The particles have a layered structure and include a first compound oxide mainly composed of lithium and nickel. The coating layers include a second compound oxide mainly composed of lithium and titanium. The ratio by weight of the first compound oxide to the second compound oxide is between 96:4 and 65:35. The positive electrode active material has a mean particle diameter of 5 to 20 μm.
Public/Granted literature
- US20040201948A1 Positive electrode active material and non-aqueous electrolyte secondary battery containing the same Public/Granted day:2004-10-14
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