- 专利标题: Positive active material, positive electrode, nonaqueous electrolyte energy storage device, method of producing positive active material, and method of producing nonaqueous electrolyte
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申请号: US16965137申请日: 2019-02-01
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公开(公告)号: US11276857B2公开(公告)日: 2022-03-15
- 发明人: Yusuke Mizuno
- 申请人: GS Yuasa International Ltd.
- 申请人地址: JP Kyoto
- 专利权人: GS Yuasa International Ltd.
- 当前专利权人: GS Yuasa International Ltd.
- 当前专利权人地址: JP Kyoto
- 代理机构: Rankin, Hill & Clark LLP
- 优先权: JPJP2018-027919 20180220
- 国际申请: PCT/JP2019/003542 WO 20190201
- 国际公布: WO2019/163475 WO 20190829
- 主分类号: H01M4/525
- IPC分类号: H01M4/525 ; C01G51/00 ; H01M4/485 ; H01M4/505 ; H01M10/0525 ; H01M4/02
摘要:
One aspect of the present invention is a positive active material containing an oxide containing lithium and a transition metal element M, in which the transition metal element M is cobalt, iron, copper, manganese, nickel, chromium, or a combination thereof, and in an X-ray diffraction pattern of the oxide, a ratio (Ia/Ib) of peak intensity Ia appearing in a range where 2θ is 20 to 25° and peak intensity Ib appearing in a range where 2θ is 30 to 35° is 0.2 or more and 0.8 or less.
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