Patent ID: 7771628
Filing Date: 2010-08-10
Classification: H01M,Y02E

Abstract:
1. A battery, comprising: a first electrode comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material independently selected from the group consisting of: (a) materials of the formula A (b) materials of the formula A (c) materials of the formula A wherein (b) the battery further comprising a second electrode which is a counter-electrode to the first electrode; and (c) an electrolyte, wherein the two or more groups of particles having differing chemical compositions comprises a first group of particles and a second group of particles, wherein: (a) the first group of particles comprises an inner and an outer region, wherein the inner region comprises a cubic spinel manganese oxide, and the outer region comprises a manganese oxide that is enriched in Mn (b) the second group of particles comprises a material selected from materials of the formula A