Patent ID: 8012624

Claim:
A cathode composition having particles comprising: a first distinct phase having a transition metal oxide comprising Co a Ni b Mn c , where a is between 0.60 and 0.96, b is between 0.02 and 0.20, and c is between 0.02 and 0.20, wherein a, b, and c, are molar amounts of cobalt, nickel, and manganese, respectively, and wherein a+b+c=1; and a second distinct phase having a transition metal oxide comprising Co x Ni y Mn z , where x is between 0.40 and 0.60, y is between 0.20 and 0.30, and z is between 0.20 and 0.30, wherein x, y, and z are molar amounts of cobalt, nickel, and manganese, respectively, and wherein x+y+z=1, wherein each particle includes at least both the first distinct phase and the second distinct phase, and wherein each of the first distinct phase and the second distinct phase comprises a layered O3 crystal structure.