公开(公告)号：US10862158B2

公开(公告)日：2020-12-08

申请号：US15761000

申请日：2016-09-29

申请人： A123 Systems LLC

发明人： Jun Wang ,  Ronnie Wilkins ,  Paul Gionet

IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/66 ,  H01M4/62 ,  H01M4/36 ,  H01M4/587

摘要： A silicon anode comprising a hybrid binder at a blending ratio of 10-90 wt. % for use in a Li-ion battery is provided. The combination of a hybrid binder in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life and a balancing effect between adhesion strength and first cycle efficiency.

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.

公开(公告)号：US20180261881A1

公开(公告)日：2018-09-13

申请号：US15761000

申请日：2016-09-29

申请人： A123 Systems LLC

发明人： Jun Wang ,  Ronnie Wilkins ,  Paul Gionet

IPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M4/36 ,  H01M4/66 ,  H01M4/587

CPC分类号： H01M10/0525 ,  H01M4/043 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/621 ,  H01M4/622 ,  H01M4/623 ,  H01M4/661

摘要： A silicon anode comprising a hybrid binder at a blending ratio of 10-90 wt. % for use in a Li-ion battery is provided. The combination of a hybrid binder in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life and a balancing effect between adhesion strength and first cycle efficiency.