Patent ID: 9153816
Filing Date: 2015-10-06
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A cathode mix for secondary batteries having a cathode active material, a conductive material and a binder, wherein the cathode active material, comprising lithium iron phosphate, coated with carbon (C), having an olivine crystal structure that contains a compound represented by the following formula 1, wherein a mean particle diameter of primary particles in the cathode active material is 50 to 1000 nm, the conductive material contains a hydrophilic conductive material, and the hydrophilic conductive material has a hydrophilic functional group content not less than 0.1% by weight and lower than 20% by weight: wherein M is at least one selected from Al, Mg, Ni, Co, Mn, Ti, Ga, Cu, V, Nb, Zr, Ce, In, Zn and Y; A is at least one selected from F, S and N; and 0<x≦0.2, −0.5≦a≦+0.5, 0≦y≦0.5, 0≦z≦0.1.