FACILITATING E-BUSINESS BY RETRIEVING RELEVANT BUSINESS OPPORTUNITIES ON THE INTERNET

The present invention provides a positive electrode material for lithium and lithium-ion secondary cells which exhibits good cycleability, reversible specific capacity, and structural stability. The positive electrode material comprises a lithium multi metal oxide having a spinel structure and described by the general formula: Li1+XMn2-YMm11 Mm22 . . . MmkkO4+Z wherein M1, M2, . . . Mk are at least two cations different than lithium or manganese, selected from the group consisting of alkaline earth metals, transition metals, B, Al, Si, Ga and Ge; X, Y, m1,m2, . . . mk are numbers between 0 and 0.2; m1, m2 and Y are greater than 0; Z is a number between -0.1 and 0.2; and wherein the metals M1, M2, . . . Mk and the corresponding values m1, m2, . . . mk satisfy the following equation and inequality: wherein V1, V2, . . . Vk are the corresponding valence states of the cations M1, M2, . . . Mk.