HYDROGEN STORAGE ALLOY POWDER, PRODUCTION METHOD THEREFOR, AND HYDROGEN STORAGE DEVICE USING THE HYDROGEN STORAGE ALLOY POWDER

摘要

PPROBLEM TO BE SOLVED: To provide easily treatable hydrogen storage alloy powder which has high hydrogen storing/discharging capacity, and to provide a production method therefor. PSOLUTION: The hydrogen storage alloy powder comprises Ti-Mn based alloy particles 1. Each Ti-Mn based alloy particle 1 consists of a particle body 2 consisting of a Ti-Mn based alloy, first oxide films 3 insularly deposited on the surface of the particle body 2, and second oxide films 4 formed on the parts at which the first oxide films 3 are not deposited in the surface of the particle body 2 and on the surfaces of the first oxide films 3, and reaction with oxygen is suppressed. Further, the production method for the hydrogen storage alloy powder comprises a first oxide film deposition stage, a second oxide film deposition stage and a heat treatment stage. PCOPYRIGHT: (C)2004,JPO&NCIPI