| 摘要 |
<p>A lithium polymer secondary cell comprising a positive electrode containing a lithium-containing composite oxide, a negative electrode containing a material to/from which lithium ions can be added/desorbed, and a separator interposed between the positive and negative electrodes, wherein the following inequalities are satisfied: Ws < Wn < Wp; 20 ≤ 100Wp / (Wp + Wn + Ws) ≤ 50; 20 ≤ 100Wn / (Wp + Wn + Ws) ≤ 50; 20 ≤ 100Ws / (Wp + Wn + Ws) ≤ 50; where Wp is the weight of the polymer material of the polymer electrolyte contained in the positive electrode, Wn is the weight of the polymer material of the polymer electrolyte contained in the negative electrode, and Ws is the weight of the polymer material of the polymer electrolyte contained in the separator. Therefore the cycle stability is excellent and the reliability is high.</p> |
