公开(公告)号：US20180145329A1

公开(公告)日：2018-05-24

申请号：US15569831

申请日：2016-04-25

Applicant: GS Yuasa International Ltd.

Inventor： Hiroaki ENDO ,  Toshiyuki AOKI ,  Hiro FURIYA

IPC: H01M4/587 ,  H01G11/38 ,  H01G11/06 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62 ,  H01M2/16 ,  H01M10/0569 ,  H01M10/0587 ,  H01M10/0568

CPC classification number: H01M4/587 ,  H01G11/06 ,  H01G11/24 ,  H01G11/32 ,  H01G11/38 ,  H01M2/16 ,  H01M4/131 ,  H01M4/133 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20

Abstract: Provided is a negative electrode for a nonaqueous-electrolyte energy storage device containing graphite, non-graphitizable carbon, and a binder. An average particle size of the non-graphitizable carbon is 8 μm or less. A ratio of the mass of the non-graphitizable carbon to a total mass of the graphite and the non-graphitizable carbon is 10% by mass or more and 50% by mass or less.

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.