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Abstract

This invention is to provide a nickel-cadmium alkaline storage battery in which the content of nickel hydroxide and/or nickel oxide in a negative active material is from 2 to 60 wt% based on the total amount of cadmium, and the content of cadmium hydroxide in the negative active material is 0.95 or lower in terms of a weight ratio to nickel hydroxide in a positive active material; a manganese dioxide-cadmium alkaline storage battery in which the content of cadmium hydroxide in a negative active material in the discharged state is 0.84 or lower in terms of a weight ratio to manganese dioxide in a positive active material; and a silver oxide-cadmium alkaline storage battery in which the content of cadmium hydroxide in a negative active material in the discharged state is 1.36 or lower in terms of a weight ratio to silver in a positive active material. According to the alkaline storage battery of the present invention, charge control can easily be done with high accuracy because the battery shows abrupt and considerable changes in voltage in the final stage of charge, and further, since the battery need almost no cadmium hydroxide for reserve, an oxygen gas generated from a positive electrode can be absorbed efficiently, so that it is also possible to perform, with high reliability, quick 1C charge of rectangular batteries and superquick charge such as 10C charge.

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First Claim