Positive electrode for nonaqueous electrolytic secondary battery and method of manufacturing the same as well as nonaqueous electrolytic secondary battery and method of manufacturing the same

摘要

A nonaqueous electrolytic secondary battery capable of improving the operating cycle characteristic is provided. This nonaqueous electrolytic secondary battery comprises a positive electrode containing a positive electrode active material including Li_xFeS₂ (0<=x<=4), a negative electrode containing a material occluding and emitting lithium ions and a nonaqueous electrolyte, and the final discharge potential of the positive electrode is set to a prescribed level exceeding the minimum potential allowing discharge reaction expressed in the following formula (3): FeS₂+xLi⁺->Li_xFeS₂ (3)