Patent ID: 7404842
Filing Date: 2008-07-29
Classification: B22F,C01B,C22C,H01M,Y02E,Y10S

Abstract:
1. A hydrogen-absorbing storage material comprising: hydrogen-absorbing alloy particles; a group VIII transition metal, wherein the group VIII transition metal is mechanically alloyed with the hydrogen-absorbing alloy particles at a ratio of 0.25%-10 wt % transition metal to alloy particles to produce mechanically alloyed storage material particles, the hydrogen-absorbing alloy particles having a diameter between approximately 1 μm and 10 μm and transition metal particles disposed at least on the surface of the hydrogen-absorbing alloy particles and having a diameter of between approximately 0.1 μm and 1.0 μm; and a binding agent which at least partially covers the mechanically alloyed storage material particles so as to effect firm binding between said mechanically alloyed storage material particles while allowing free passage of hydrogen in and out of the mechanically alloyed storage material particles, said binding agent being present in an amount less than 1 weight percent of said mechanically alloyed storage material particles.