发明申请
- 专利标题: ELECTRODE FOR LITHIUM ION BATTERY, MANUFACTURING METHOD THEREOF, LITHIUM ION BATTERY, AND MANUFACTURING METHOD THEREOF
- 专利标题(中): 锂离子电池用电极,其制造方法,锂离子电池及其制造方法
-
申请号: US13538939申请日: 2012-06-29
-
公开(公告)号: US20130004843A1公开(公告)日: 2013-01-03
- 发明人: Takaaki Suzuki , Etsuko Nishimura , Toshio Abe , Chieko Araki
- 申请人: Takaaki Suzuki , Etsuko Nishimura , Toshio Abe , Chieko Araki
- 申请人地址: JP Tokyo
- 专利权人: HITACHI, LTD.
- 当前专利权人: HITACHI, LTD.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2011-144311 20110629
- 主分类号: H01M4/64
- IPC分类号: H01M4/64 ; H01M4/04 ; H01M10/0525
摘要:
An electrode for a lithium-ion secondary battery includes a collector of copper or the like, an electrode material layer being form on one surface and both surfaces of the collector and including an active material and a binder, and a binder-rich layer being formed in a dot shape or a stripe shape with a predetermined interval in the interface between the collector and the electrode material layer and having a binder concentration higher than that of the electrode material layer. Accordingly, a concentration gradient of the binder is provided to the surface of the collector. By arranging the binder-rich layer at a predetermined interval, it is possible to improve the adhesiveness between the collector and the electrode material layer due to an anchor effect and to guarantee conductivity between the collector and the electrode material layer.
公开/授权文献
信息查询