초록 ▼

A sealed alkaline-zinc storage battery includes a battery can, a hollow positive electrode disposed within the battery can in electrical contact therewith and containing a positive active material including nickle hydroxide, a negative electrode disposed inwardly of the positive electrode and contai

A sealed alkaline-zinc storage battery includes a battery can, a hollow positive electrode disposed within the battery can in electrical contact therewith and containing a positive active material including nickle hydroxide, a negative electrode disposed inwardly of the positive electrode and containing a negative active material including zinc, a separator disposed between the positive and negative electrodes, a negative current collector inserted into the negative electrode, and an alkaline electrolyte filled in the battery can and impregnated into the positive electrode, negative electrode and separator. The positive electrode, negative electrode, separator, negative current collector and electrolyte together account for at least 75% of an internal volume of the battery can. The alkaline electrolyte is in the 30 to 45 mass % concentration range and has a total water content in the range of 0.5 to 0.9 g for each theoretical capacity of the negative electrode expressed as 1 Ah (ampere-hour).

대표청구항 ▼

[ What is claimed is:] [1.]1. A sealed alkaline-zinc storage battery comprising:a battery can;a hollow positive electrode disposed within said battery can in electrical contact therewith and containing a positive active material comprising nickel hydroxide;a negative electrode disposed inwardly of s

[ What is claimed is:] [1.]1. A sealed alkaline-zinc storage battery comprising:a battery can;a hollow positive electrode disposed within said battery can in electrical contact therewith and containing a positive active material comprising nickel hydroxide;a negative electrode disposed inwardly of said positive electrode and containing a negative active material comprising zinc;a separator disposed between said positive electrode and said negative electrode;a negative current collector disposed inserted into said negative electrode; andan alkaline electrolyte filled in said battery can and impregnated into said positive electrode, said negative electrode and said separator;wherein said positive electrode, said negative electrode, said separator, said negative current collector and said electrolyte together account for at least 75% of an internal volume of said battery can; andwherein said alkaline electrolyte has a concentration in the range of 30 to 45 mass % and has a total water content in the range of 0.5 to 0.9 g for each theoretical capacity expressed as 1 Ah of said negative electrode.