Patent ID: 9105931
Filing Date: 2015-08-11
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A positive electrode plate for a lithium ion secondary battery, the positive electrode plate comprising: a positive current collecting foil made of aluminum, in which at east a main surface portion constituting a main surface is porous; and a positive active material layer containing positive active material particles and being formed on the main surface portion of the positive current collecting foil, wherein a coating layer consisting of tungsten carbide, having electrical conductivity and corrosion resistance, is formed between the positive current collecting foil from which an aluminum oxide layer made of aluminum oxide having been formed on the main surface is removed and the positive active material layer to directly coat the main surface of the positive current collecting foil without interposition of an aluminum oxide layer made of aluminum oxide, and wherein a diamond-like carbon film is directly formed on the coating layer.