Patent ID: 9023525
Filing Date: 2015-05-05
Classification: H01M,Y02E

Abstract:
1. A cathode active material for a lithium secondary battery containing a lithium transition metal oxide capable of lithium ion intercalation/deintercalation, which further comprises a lithium nickel oxide represented by the following formula 1 that is surface-coated with an oxide other than lithium nickel oxides, as an additive in an amount of 0.1 to 9 parts by weight based on 100 parts by weight of the total cathode active material, and wherein the oxide other than lithium nickel oxides is an oxide or composite oxide of at least one element selected from the group consisting of P, C, Sc, Cr, Mn, Fe, Cu, Zn, Mo, and Nb: wherein, x is a number satisfying −0.5≦x≦0.5, y is a number satisfying 0<y<1, a is a number satisfying 0≦a<0.3, and M is at least one element selected from the group consisting of P, C, Nb, Mo and Cd.