Patent ID: 8012625

Claim:
A non-aqueous electrolyte secondary cell comprising: a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and non-aqueous electrolyte, wherein: the positive electrode active material comprises lithium cobalt oxide represented by a chemical formula Li a Co 1−x M x O 2 (where0<a≦1.1, 0.01≦x≦0.05 and M is at least one selected from the group consisting of Mg, Al, Ti, and Zr) and the positive electrode comprises lithium phosphate represented by the chemical formula Li 3 PO 4 , and wherein an amount of lithium phosphate added is within the range of 0.01-5 parts by mass where a total of the positive electrode active material and lithium phosphate added is taken as 100 parts by mass.