Patent ID: 8603673
Filing Date: 2013-12-10
Classification: H01M,Y02E

Abstract:
1. A negative electrode comprising: a negative electrode mixture layer including: a negative electrode active material; a binder comprising a polymer containing vinylidene fluoride as a repeating unit and a polymer containing acrylonitrile as a repeating unit; and a vapor-grown carbon fiber, wherein: a content of the polymer containing acrylonitrile as a repeating unit is from 1 to 20% by mass relative to a total content of the polymer containing vinylidene fluoride as a repeating unit and the polymer containing acrylonitrile as a repeating unit, and the polymer containing acrylonitrile as a repeating unit is selected from the group consisting of polyacrylonitrile, a copolymer having an acrylate group and a copolymer having an acrylamide group.