CATHODE MIXTURE FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING SAME

Disclosed is a cathode mix for secondary batteries, comprising lithium iron phosphate, coated with carbon (C), having an olivine crystal structure that contains a compound represented by the following formula 1 as a cathode active material, wherein a mean particle diameter of primary particles in the cathode active material is 2 µm or less, and the cathode mix contains a hydrophilic conductive material as a conductive material. 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