- 专利标题: ANODE FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
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申请号: EP23163582.2申请日: 2022-01-25
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公开(公告)号: EP4220752A2公开(公告)日: 2023-08-02
- 发明人: LEE, Yong Seok , MIN, Jae Yun , KIM, Jae Ram , KIM, Jung Hwa , BAE, Sang Won , BAE, Ji Hee , LEE, Myung Ro , LEE, Jae Yeong
- 申请人: SK On Co., Ltd.
- 申请人地址: KR Seoul 03161 51, Jong-ro Jongno-gu
- 代理机构: Stolmár & Partner Patentanwälte PartG mbB
- 优先权: KR20210038955 20210325
- 主分类号: H01M4/13
- IPC分类号: H01M4/13 ; H01M4/134 ; H01M4/38 ; H01M4/48 ; H01M4/62 ; H01M4/587 ; H01M4/36
摘要:
An anode for a secondary battery includes an anode current collector, and an anode active material layer including a first anode active material layer and a second anode active material layer sequentially stacked from a surface of the anode current collector. Each of the first anode active material layer and the second anode active material layer comprises a carbon-based active material and a silicon-based active material as an anode active material, and a carbon nanotube as a conductive material. A content of the silicon-based active material in the second anode active material layer is greater than a content of the silicon-based active material in the first anode active material layer. A Raman R value of the carbon nanotube included in the second anode active material layer is smaller than a Raman R value of the carbon nanotube included in the first anode active material layer.
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