Patent ID: 7056621
Filing Date: 2006-06-06
Classification: H01M,Y02E

Abstract:
1. An alkaline storage battery comprising a positive electrode, a negative electrode, a separator, and an alkaline electrolyte retained in the positive electrode, the negative electrode and the separator, wherein the alkaline storage battery further comprises a first compound for adsorbing ammonia, the ammonia being present between the positive electrode and the negative electrode, and the positive electrode comprises a second compound for increasing oxygen overvoltage at a time of overcharge, wherein the first compound is contained in a form of powder and comprises carbodiimide groups, the second compound is selected from the group consisting of yttrium compounds, indium compounds, antimony compounds, beryllium compounds and ytterbium compounds for anti-oxidation of the carbodiimide groups, wherein an amount X (g) of the second compound contained in the positive electrode and an amount Y (g) of an active material contained in the positive electrode satisfy 0.001≦X/Y≦0.05.