Patent ID: 8889290
Filing Date: 2014-11-18
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. An electrode for a lithium-ion secondary battery comprising: a collector; a material layer that is formed on one surface or both surfaces of the collector and that includes an active material and a binder; and a binder-rich layer that is disposed at a predetermined interval in an interface between the collector and the material layer and that has a binder concentration higher than that of the material layer; wherein the width of the binder-rich layer is equal to or greater than the average particle diameter of the active material in the material layer and equal to or less than the thickness of the material layer; wherein the interval of the binder-rich layer is equal to or greater than the average particle diameter of the active material in the material layer; and wherein the thickness of the binder-rich layer is equal to or less than a half of the average particle diameter of the active material in the material layer.