Hydrogen absorbing alloy, electrode thereof and nickel-metal hydride battery
AssigneeSanyo Electric Co., Ltd.
InventorsTetsuyuki Murata, Shigekazu Yasuoka, Jun Ishida
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Abstract
A hydrogen absorbing alloy containing at least a rare-earth element, magnesium (Mg), nickel (Ni) and aluminum (Al), having an intensity ratio (IA/IB) of not smaller than 0.6 (where IA represents an intensity of the highest peak in a range of 2θ=30°˜34° in the X-ray diffraction pattern using CuKα-radiation as the X-ray source and IB represents the intensity of the highest peak in a range of 2θ=40°˜44°), and not substantially including La as the rare-earth element.
Claims12
A hydrogen absorbing alloy comprising at least a rare-earth element, magnesium (Mg), nickel (Ni) and aluminum (Al) and having an intensity ratio (IA/IB) of not smaller than 0.6 (where IA represents an intensity of the highest peak in a range of 2θ=30°˜34° in the X-ray diffraction pattern using CuKα-radation as the X-ray source and IB represents the intensity of the highest peak in a range of 2θ=40°˜44°) and not substantially including La as the rare-earth element.
A hydrogen absorbing alloy represented by formula RE1-xMgxNiyAlzMa, wherein RE is a rare-earth element except for La and M is an element other than a rare-earth element, Mg, Ni and Al, and 0.15≦x≦0.30, 2.8≦y≦3.9, 0<z≦0.30 and 0≦y+z+a≦3.6.
Dependencies are inferred from the claim text.