- 专利标题： Positive electrode active material for lithium secondary battery, method of preparing the same, and positive electrode for lithium secondary battery and lithium secondary battery which include the positive electrode active material
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申请号： US18195089申请日： 2023-05-09
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公开(公告)号： US11876210B2公开(公告)日： 2024-01-16
- 发明人: Tae Gu Yoo , Young Uk Park , Jin Tae Hwang , Wang Mo Jung , Sung Bin Park
- 申请人： LG Energy Solution, Ltd.
- 申请人地址： KR Seoul
- 专利权人： LG Energy Solution, Ltd.
- 当前专利权人： LG Energy Solution, Ltd.
- 当前专利权人地址： KR Seoul
- 代理机构： Lerner David LLP
- 优先权： KR 20180040424 2018.04.06
- 主分类号： H01M4/131
- IPC分类号： H01M4/131 ; H01M4/04 ; H01M4/134 ; H01M4/1391 ; H01M4/1395 ; H01M4/36 ; H01M4/525 ; H01M10/0525 ; H01M4/02
摘要：
A positive electrode active material includes a lithium transition metal oxide, which is doped with doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.
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