Alkaline secondary battery

Abstract

An alkaline secondary battery disclosed in the present application includes a positive electrode containing a positive electrode active material, a negative electrode, and a separator. The positive electrode active material contains a mixture of a silver oxide and a silver-bismuth complex oxide. A discharge curve is obtained when the battery that is fully charged is discharged with a constant current until a battery voltage drops to 1.0 V. The battery voltage at a point on the discharge curve where x (%) of a total discharge capacity has been discharged from the battery since start of discharge is represented by Vx (V). The discharge curve satisfies V10−V70≤0.08, has a step in the range of 70≤x≤90, and shows that a size of the step represented by V70−V90 is 0.04 or more and 0.15 or less.

Dependencies are inferred from the claim text.