Patent ID: 8993162
Filing Date: 2015-03-31
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A positive electrode for a lithium secondary battery, the positive electrode comprising: a positive electrode current collector; an electrically conductive layer laminated on a surface of the positive electrode current collector, said electrically conductive layer comprising an electrically conductive material and a first binder, and said electrically conductive layer not comprising a positive electrode active material; and a positive electrode active material layer laminated on the electrically conductive layer, said active material layer comprising a positive electrode active material and a second binder, wherein the first binder in the electrically conductive layer consists of at least one type of water-insoluble polymer that is soluble in an organic solvent, the second binder in the active material layer consists of at least one type of water-soluble polymer and/or water-dispersible polymer that dissolves or disperses in water, and wherein a mass ratio (B/A) of mass (B) per unit surface area of the water-soluble and/or water-dispersible binder in the active material layer to mass (A) per unit surface area of the water-insoluble binder in the electrically conductive layer satisfies a relationship of 0.06≦B/A≦0.35.