Patent ID: 6852447
Filing Date: 2005-02-08
Classification: H01M,Y02E,Y10S,Y10T

Abstract:
1. A metal hydride alkaline storage cell comprising: a positive electrode; a separator impregnated with an electrolyte; and a negative electrode comprising hydrogen-absorbing alloy powder, wherein said hydrogen-absorbing alloy powder has a layer of hydrogen-absorbing alloy oxide formed on the surface thereof, and a catalytic metal or metal compound is dotted on said layer of hydrogen-absorbing alloy oxide in a granular state by adding a substance to the negative electrode and/or electrolyte, said substance being soluble in the electrolyte, said substance being at least one member selected from the group consisting of a cobalt chloride and a nickel chloride; and the proportion of said substance to said hydrogen-absorbing alloy powder is restricted within the range of 0.1 to 2.5 wt %.