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公开(公告)号：US20230066253A1
公开(公告)日：2023-03-02
申请号：US17979299
申请日：2022-11-02
发明人： Wei HE , Chong PENG , Bo CHEN , Junyi LI , Yanming XU
IPC分类号： H01M4/583 , H01M10/0525 , H01M4/36 , H01M4/38 , H01M4/04
摘要： A negative electrode sheet, its fabricating method, and a battery containing negative electrode sheet are provided. The negative electrode sheet includes: a current collector; a first active layer provided on a surface of at least one side of the current collector, and a second active layer provided on a surface of one side of the first active layer away from the current collector, the first active layer is different from the second active layer, the first active layer includes a first active material including a first graphite, and the second active layer includes a second active material including a second graphite; and a ratio of the second capacity ratio for the second active material to the first capacity ratio for the first active material is greater than 1.
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2.发明申请公开(公告)号：US20210351392A1
公开(公告)日：2021-11-11
申请号：US17119304
申请日：2020-12-11
发明人： Baohai ZHANG , Chong PENG , Wei HE , Chao SHI , Junyi LI , Yanming XU
IPC分类号： H01M4/04 , H01M4/36 , H01M10/0525
摘要： The present disclosure provides a negative electrode sheet, a preparation method thereof and a lithium ion battery containing the same. The negative electrode sheet includes a negative electrode current collector, where the negative electrode current collector includes a single-sided coating area and a double-sided coating area; in the double-sided coating area, second coating layers are disposed on both side surfaces of the negative electrode current collector, respectively, wherein each of the second coating layers includes a first negative electrode active material layer and a second negative electrode active material layer, the second negative electrode active material layer is disposed on a surface of the negative electrode current collector, and the first negative electrode active material layer is disposed on a surface of the second negative electrode active material layer.
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