Patent ID: 8153301
Filing Date: 2012-04-10
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. An electrochemical cell comprising at least one electrode, wherein the electrode comprises a composition comprising a lithium mixed metal oxide composition having the formula, Li[Li x Ni y Mn z ]O 2 , wherein x+y+z=1, 0<x<0.20, 0.28≦y≦0.75, and 0.25≦z≦0.49, said composition in the form of a single phase, wherein the single phase has an O3 layered structure, wherein the composition does not undergo a phase transformation to a spinel crystal structure when the electrode is incorporated into a lithium-ion battery and cycled for 100 full charge-discharge cycles at 30° C. and has a final capacity of greater than about 210 mAh/g at 4.6 V, and wherein the electrochemical cell comprises an electrolyte that includes diethyl carbonate.