| abstract |
An alkaline battery comprising a positive electrode mix and a negative electrode and, interposed therebetween, a separator, the positive electrode mix containing nickel oxyhydroxide, manganese dioxide and a conduction aid, wherein (1) at least manganese is solid dissolved in the nickel oxyhydroxide, the manganese occupying 0.5 to 10 mol% of the sum of metal elements contained in the nickel oxyhydroxide, and wherein (2) the nickel oxyhydroxide is composed mainly of a β-crystal structure, and wherein (3) the nickel oxyhydroxide has an average particle diameter on volume basis of 8 to 15 μm. By virtue of the use of the above positive electrode mix, a capacity increase and an enhancement of storage characteristics can be accomplished for the alkaline battery. Further, by causing the nickel oxyhydroxide having manganese solid dissolved therein to have the above properties, there can be accomplished a striking enhancement of the productivity of the nickel oxyhydroxide. |