Sealed alkaline-zinc storage battery

Details Sealed alkaline-zinc storage battery Sealed alkaline-zinc storage battery

H - Electricity

01

M

H01M 10/24 (2006.01) H01M 4/24 (2006.01) H01M 4/42 (2006.01) H01M 10/28 (2006.01) H01M 4/48 (2006.01) H01M 4/52 (2006.01)

Patent

CA 2267715

The invention provides a sealed alkaline-zinc storage battery including a tubular positive electrode containing, as an active material, a material having reversibility in a charge-discharge reaction; a separator; a negative electrode disposed within the tubular positive electrode with the separator sandwiched therebetween; and an alkaline electrolyte, in which the positive electrode has a capacity smaller than a capacity of the negative electrode at least in initial charge-discharge cycles, and the amounts of an uncharged active material and zinc to be packed in the negative electrode in manufacture of the sealed alkaline-zinc storage battery are set so that a theoretical capacity P of the uncharged active material existing in the negative electrode can be 0.3 through 1.8 times as large as a battery capacity in a completely charged state in the initial charge-discharge cycles, and that a theoretical capacity Q of zinc existing in the negative electrode can be 0.6 through 2.5 times as large as the battery capacity in a completely discharged state in the initial charge-discharge cycles. Thus, a sealed alkaline-zinc storage battery with high charge-discharge cycle performance is obtained.

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