MANUFACTURING METHOD OF HYDROGEN STORAGE ALLOY POWDER, HYDROGEN STORAGE ALLOY POWDER, HYDROGEN STORAGE ALLOY ELECTRODE AND ALKALINE STORAGE BATTERY

Japanese Patent JP2002025550

A

To sufficiently enhance a low-temperature discharging property, a cycle life, and a high-rate discharging property in an alkaline storage battery wherein a hydrogen storage alloy electrode using hydrogen storage alloy powder is used for a negative electrode.

After hydrogen storage alloy powder containing nickel are surface-treated in an acidic solution containing carboxylic acid, they are treated with a solution containing a reducer. Then, by using the hydrogen storage alloy powder for electrodes wherein an atomic ratio of metallic nickel in all nickels existing on the surface layer is 50% or more and a complex of carboxylic acid and metal is formed on the surface, the hydrogen storage alloy electrode 2 is prepared, and this hydrogen storage alloy electrode 2 is used for the negative electrode of the alkaline storage battery.

WO/2002/090023	HIGH MACHINABILITY IRON BASE SINTERED ALLOY FOR VALVE SEAT INSERTS
JPS59129753	ALLOY STEEL POWDER FOR HIGH STRENGTH SINTERED MATERIAL
JPS62133001	NICKEL ALLOY POWDER FOR SINTERING ADDITIVE

HIGASHIYAMA NOBUYUKI
KIYOKU YOSHIFUMI
MASUDA YOSHIHIRO
ITO YASUHIKO

JP2000203019A

January 25, 2002

July 05, 2000

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SANYO ELECTRIC CO

B22F1/00; B22F1/02; B22F5/00; C22C19/00; H01M4/24; H01M4/38; H01M10/30; (IPC1-7): H01M4/38; B22F1/00; B22F1/02; B22F5/00; C22C19/00; H01M4/24; H01M10/30

Matsukawa Katsuaki

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