| 摘要 |
PURPOSE:To improve the cycling characteristic end overvoltage characteristic by using a specific compound oxide having a layer structure as a positive electrode. CONSTITUTION:A compound oxide having a layer structure and shown by Formula I is used as a positive electrode, where A is one type selected among alkaline metals; B is a transition metal; C is one type selected among a group of Al, In, and Sn; D indicates at least one type selected among a group of alkaline metals other than (a) A, transition metals other than (b) B, and second- sixth period elements of IIIb group, IVb group, Vb group, VIb group except (c) IIa group elements, (d) Al, In, Sn, carbon, nitrogen, and oxygen; and (x), (y), (z), and (w) indicate 0.05<=x<=1.10, 0.85<=y<=1.00, 0.001<=z<=0.10, 0.001<=w<=0.10 respectively. Thereby, the cycling characteristic and self-discharge characteristic are improved. |
