Patent ID: 7674557

Claim:
A positive electrode active material for lithium secondary batteries comprising: a positive electrode active material wherein the positive electrode active material is in the form of powder having an oxidation/reduction potential of from 1.5V to 6.0V, based on the oxidation/reduction potential of lithium metal, and is a compound represented by the following formula (1): Li a M b N c L d O e P f Q g (1) wherein, a, b, c and d are independently an equivalent number from 0 to 2, L, M and N are each a member independently selected from the group consisting of Mn, Co, Ni, Fe, Cu, Cr, Sr, Ti, V, Cu, Zn and Al, e, f and g are independently an equivalent number from 0 to 4, and O, P and Q are each a member independently selected from the group consisting of O, S, F, Cl, Br, I, Se, Te and Fr; and a member coated on the positive electrode active material wherein the member is an amphoteric compound including zinc, tin, lead, antimony, or arsenium.