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公开(公告)号：US20240258503A1
公开(公告)日：2024-08-01
申请号：US18419813
申请日：2024-01-23
发明人： Hannah Song , Yongil Cho , Chanbum Park , Hyeonha Lee , Hyunjin Kim
CPC分类号： H01M4/366 , H01M4/0416 , H01M4/0435 , H01M4/622
摘要： A battery electrode and its manufacturing method. In particular, the battery electrode includes: a separator; a first composite layer disposed on the separator and having a first active material, a first binder, and a first conductive material; a second composite layer disposed on the first composite layer and having a second active material, a second binder, and a second conductive material; a third composite layer disposed on the second composite layer and having a third active material, a third binder, and a third conductive material; and a substrate disposed on the third composite layer. A resistance of the first composite layer is less than that of the second composite layer, and a resistance of the second composite layer is less than that of the third composite layer.
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2.发明公开公开(公告)号：US20240030404A1
公开(公告)日：2024-01-25
申请号：US18124187
申请日：2023-03-21
发明人： Hannah Song , Hyunjin Kim , Chan Bum Park
IPC分类号： H01M4/1393 , H01M10/0525 , H01M4/62 , H01M4/04
CPC分类号： H01M4/1393 , H01M10/0525 , H01M4/622 , H01M4/0435 , H01M2004/027
摘要： Provided are a negative electrode manufacturing method capable of forming a graphite layer oriented in one direction by using a dry process, and a negative electrode and a lithium secondary battery manufactured using the method. The manufacturing method includes: preparing a powder mixture including a plate-shaped graphite and a binder; a granulation step of preparing a graphite granule by processing the powder mixture such that graphite is oriented in one direction; preparing a graphite film in which the graphite is oriented in a thickness direction by shaping the prepared graphite granule; and laminating the graphite film on at least one surface of a negative electrode substrate.
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