Patent ID: 8268473
Filing Date: 2012-09-18
Classification: H01M,Y02E,Y02P

Abstract:
1. An electrode plate for a non-aqueous electrolyte secondary battery, comprising a long core member and a material mixture layer formed on said core member, wherein: said electrode plate has an exposed part of said core member formed along one side which is parallel to the longitudinal direction of said core member, said material mixture layer comprises a material that can absorb and desorb lithium ions, a porous film is formed on said material mixture layer and at least a part of said exposed part of said core member adjacent to an edge face of said material mixture layer, said exposed part being on the same side as the face of said core member on which said material mixture layer is formed, a slope is created at an edge portion of said material mixture layer, said edge portion being located on the side of said exposed part of said core member and said slope being created by a thickness of said edge portion made gradually smaller toward the edge of said edge portion, and a thickness of said porous film located at said edge portion, in a direction normal to said slope, is greater than a thickness of said porous film located at a central portion of said material mixture layer in the width direction thereof.