| 摘要 |
PURPOSE: To provide a lithium secondary battery with long life, in which oxidation decomposition of a nonaqueous electrolyte is retarded without decrease in capacity. CONSTITUTION: A secondary battery comprises a nonaqueous electrolyte, a negative electrode 3 made of carbon serving as a negative active material, and a positive electrode 1 made of lithium oxide serving as a positive actival material. Either one of an oxide of K, Ca, Sc, Ti, Cu, Zn, B, Al, or Si which is a low active material having a property difficult to electrochemically decompose the nonaqueous electrolyte than the positive active material, or Au is dispersed in part of the positive active material particle surface. |
