公开(公告)号：US20200259164A1

公开(公告)日：2020-08-13

申请号：US16858487

申请日：2020-04-24

申请人： A123 Systems, LLC

发明人： Jun Wang ,  Paul Gionet ,  Hungoo Cho ,  Leslie J. Pinnell ,  Robert W. Grant

IPC分类号： H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M4/04 ,  H01M4/133 ,  H01M10/0525

摘要： A pre-lithiated silicon anode comprising a PVDF binder at 5-12 wt. % for use in a Li-ion cell is provided. In particular instances, a conductive additive may be added at less than 5 wt. %. The Si anode with PVDF binder is pre-lithiated prior to cell assembly and following Si anode fabrication. The combination of pre-lithiation and PVDF in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life.

公开(公告)号：US20170301910A1

公开(公告)日：2017-10-19

申请号：US15515573

申请日：2015-09-29

申请人： A123 Systems LLC

发明人： Jun Wang ,  Paul Gionet ,  Hungoo Cho ,  Leslie J. Pinnell ,  Robert W. Grant

IPC分类号： H01M4/134 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/62 ,  H01M4/04 ,  H01M4/36 ,  H01M4/133 ,  H01M4/38 ,  H01M4/587 ,  H01M4/02

CPC分类号： H01M4/134 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/0459 ,  H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

摘要： A pre-lithiated silicon anode comprising a PVDF binder at 5-12 wt. % for use in a Li-ion cell is provided. In particular instances, a conductive additive may be added at less than 5 wt. %. The Si anode with PVDF binder is pre-lithiated prior to cell assembly and following Si anode fabrication. The combination of pre-lithiation and PVDF in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life.