公开(公告)号：US11769882B2

公开(公告)日：2023-09-26

申请号：US17354959

申请日：2021-06-22

申请人： A123 Systems, LLC

发明人： Tae Kyoung Kim ,  Jun Wang ,  Ronnie Wilkins ,  Jordan Rubio ,  Ankita Faulkner ,  Zaiyuan Le ,  Xiqing Wang ,  Ting Huang

IPC分类号： H01M4/00 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

CPC分类号： H01M4/663 ,  H01M4/0404 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525

摘要： Systems and methods are provided for an electrode for a lithium-ion battery cell. In one example, the electrode may include a current collector having two opposing sides, at least one of the two opposing sides being configured with a first coating layer disposed on the current collector at a first loading, where the first coating layer may include a first binder in a first weight ratio, and a second coating layer disposed on the first coating layer at a second loading, where the second coating layer may include a second binder in a second weight ratio, wherein the first weight ratio may be greater than the second weight ratio, and a ratio of the first loading to the second loading may be less than 1:2. In this way, direct current internal resistance of the lithium-ion battery cell may be decreased while maintaining or increasing adhesion within the electrode.

公开(公告)号：US20210399308A1

公开(公告)日：2021-12-23

申请号：US17354959

申请日：2021-06-22

申请人： A123 Systems, LLC

发明人： Tae Kyoung Kim ,  Jun Wang ,  Ronnie Wilkins ,  Jordan Rubio ,  Ankita Faulkner ,  Zaiyuan Le ,  Xiqing Wang ,  Ting Huang

IPC分类号： H01M4/66 ,  H01M4/04 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

摘要： Systems and methods are provided for an electrode for a lithium-ion battery cell. In one example, the electrode may include a current collector having two opposing sides, at least one of the two opposing sides being configured with a first coating layer disposed on the current collector at a first loading, where the first coating layer may include a first binder in a first weight ratio, and a second coating layer disposed on the first coating layer at a second loading, where the second coating layer may include a second binder in a second weight ratio, wherein the first weight ratio may be greater than the second weight ratio, and a ratio of the first loading to the second loading may be less than 1:2. In this way, direct current internal resistance of the lithium-ion battery cell may be decreased while maintaining or increasing adhesion within the electrode.