发明公开
- 专利标题: CATHODE FOR LITHIUM SECONDARY BATTERY AND LITHIUMSECONDARY BATTERY INCLUDING THE SAME
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申请号: EP22156654.0申请日: 2022-02-14
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公开(公告)号: EP4053945A2公开(公告)日: 2022-09-07
- 发明人: KANG, Min Gu , LEE, Sang Han , CHO, Yong Hyun
- 申请人: SK On Co., Ltd.
- 申请人地址: KR Seoul 03188 (Seorin-dong) 26, Jongro Jongro-gu
- 代理机构: Stolmár & Partner Patentanwälte PartG mbB
- 优先权: KR20210020435 20210216
- 主分类号: H01M4/505
- IPC分类号: H01M4/505 ; H01M4/525 ; H01M4/62 ; H01M10/0525
摘要:
A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer comprising a first cathode active material layer and a second cathode active material layer sequentially stacked on the cathode current collector. The first cathode active material layer includes first cathode active material particles having a secondary particle structure, and the second cathode active material layer includes second cathode active material particles having a single particle shape. A ratio of a SPAN value of the second cathode active material particles relative to a SPAN value of the first cathode active material particles is in a range from 2 to 4.5.
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