| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery with high load characteristics even when a positive active material is handled in the atmosphere by using an LiNiO2 family compound as the positive active material. SOLUTION: A lithium secondary battery uses lithium or a lithium-containing compound as a negative active material, and as a positive active material, Li1+1/3y Ni1-y Mnn2/3y O2 (wherein 0<y<=0.5) obtained by forming a solid solution of LiNiO2 and Li2 MnO3 is used. Even if the positive active material obtained is handled in the atmosphere, drop in load characteristics is prevented. |
