Patent ID: 8778539
Filing Date: 2014-07-15
Classification: H01M,Y02E,Y02T

Abstract:
1. A secondary battery electrode comprising: a current collector; a first electrode active material layer containing spinel-structured lithium manganate as an electrode active material, the electrode active material being distributed homogeneously through the layer, and being disposed in contact with the current collector; and a second electrode active material layer containing, as the electrode active material, a composite oxide represented by a following Chemical formula ( wherein an average particle diameter of the composite oxide is smaller than an average particle diameter of the spinel-structured lithium manganate: where M is at least one type selected from the group consisting of Al, Ga and In, V represents an atomic ratio of Co, and is in a range of: 0≦V≦0.5, X represents an atomic ratio of Ni, and is in a range of: 0.3≦X<1.0, Y represents an atomic ratio of Mn, and is in a range of: 0≦Y≦0.5, Z represents an atomic ratio of M, and is in a range of: 0≦Z≦0.1, and v+x+y+z is equal to 1, and wherein the composite oxide comprises LiNi