| abstract |
PROBLEM TO BE SOLVED: To provide a non-aqueous secondary battery having high capacity, excellent charge / discharge cycle characteristics and high reliability such as safety, and a method of using the same. A non-aqueous secondary battery comprising a positive electrode having a positive electrode mixture layer, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode comprises two or more lithium-containing transition metals having different average particle sizes as active materials. Among the two or more lithium-containing transition metal oxides, the lithium-containing transition metal oxide having at least the minimum average particle size is Mg, Ti, Zr, Ge, Nb, Al, and Sn. A non-aqueous secondary battery comprising at least one metal element selected from the group consisting of: a non-aqueous secondary battery having a positive electrode potential of 4 at full charge as a Li reference potential; It is a usage method characterized by charging so that it may become .35-4.6V. [Selection figure] None |