Patent ID: 6265105
Filing Date: 2001-07-24
Classification: H01M,Y02E

Abstract:
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.