Positive electrode active material and method of producing the same and nonaqueous electrolyte battery having positive electrode containing positive electrode active material

Abstract From the Canadian patent

There are provided positive electrode active materials that consist essentially of an olivine-type , lithium manganese phosphate compound particles represented by the following general formula , (2), Li x Mn y M1z M2 w PO4 (2) wherein 0 < x < 2, 0 < y < 1, 0 < z < 0.2 0 < w < 0.2, M1 is at least one , divalent metal element selected from the group consisting of Co Ni, and Fe, and M2 is Ti; , and, carbon on the surface of the olivine-type lithium manganese phosphate compound particles in an amount no greater than 20 weight% wherein said positive electrode active material has a particle diameter of 10 to 500 nm. There are also provided methods of producing such positive electrode active …