Patent ID: 8470473
Filing Date: 2013-06-25
Classification: H01M,Y02E

Abstract:
1. An electrode comprising: a current collector; and an active material-containing layer provided on the current collector and containing active material particles and ceramic particles; wherein a weight concentration of the ceramic particles relative to the active material particles in a surface part in the active material-containing layer on the opposite side to the current collector is higher than a weight concentration of the ceramic particles relative to the active material particles in a lower part in the active material-containing layer on the current collector side, wherein the ceramic particles are uniformly distributed throughout the entirety of the surface part, wherein a thickness of the surface part is not less than 30% nor more than 60% of a total thickness of the surface part and the lower part, and wherein the surface part contains not less than 53 parts by weight nor more than 85 parts by weight of the ceramic particles relative to 100 parts by weight of the active material particles in the surface part.