公开(公告)号：US20170207445A1

公开(公告)日：2017-07-20

申请号：US15304981

申请日：2015-04-16

Applicant: GS Yuasa International Ltd.

Inventor： Hiroyuki KITAJIMA ,  Toshiyuki AOKI ,  Hiro FURIYA ,  Hiroaki ENDO

IPC: H01M4/133 ,  H01M10/0587 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/62

CPC classification number: H01M4/133 ,  H01M4/587 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/027 ,  H01M2220/20

Abstract: The present invention aims at improving both of power characteristics and a capacity retention ratio of a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte secondary battery according to the present invention is characterized in that a negative electrode contains an aqueous binder as a binder and amorphous carbon as a negative active material, and an average particle size of the amorphous carbon is set to a specific average particle size, which is 7 μm or less. By employing a constitution of this characteristic, both of power characteristics and a capacity retention ratio of the nonaqueous electrolyte secondary battery can be improved.