HYDROGEN GENERATING MATERIAL, METHOD FOR PRODUCING SAME, METHOD FOR PRODUCING HYDROGEN, AND APPARATUS FOR PRODUCING HYDROGEN

摘要

Provided are a hydrogen generating material stable even in air, etc. A hydrogen generating material which contains Mg nanoparticles having a slowly-oxidized surface and in which the slowly-oxidized Mg nanoparticles react with water to generate hydrogen. The hydrogen generating material in which the specific surface area of the Mg nanoparticles is less than 70 m 2 /g but more than 3 m 2 /g. The hydrogen generating material further containing a powder of a metal of which the standard electrode potential is larger in the positive direction than that of Mg. A method for producing the hydrogen generating material which comprises at least the following steps (a) and (b).
(a) A step of arc-melting an Mg metal ingot in an atmosphere of hydrogen, nitrogen, Ar or a mixed gas thereof to give Mg nanoparticles.
(b) A step of slowly oxidizing the surface of the Mg nanoparticles.