Burns, Doane, Swecker & Mathis, LLP
Hydrogen-absorbing alloy and hydrogen-absorbing alloy electrode
To provide a hydrogen absorbing alloy having a BCC (body-centered cubic structure) as a crystal structure, and particularly a hydrogen-absorbing alloy for a nickel-hydride cell having excellent discharge capacity and durability (cycle characteristics), said hydrogen-absorbing alloy having a composition expressed by the general formula Ti(100&#8722;a&#8722;b&#8722;c&#8722;d)CraVbNicXd, where X is at least one member selected from the group consisting of Y (yttrium), lanthanoids, Pd and Pt, and each of a, b, c and d is represented, in terms of at %, by the relations 8&lE;a&lE;50, 30<b&lE;60, 5&lE;c&lE;15, 2&lE;d&lE;10 and 40&lE;a+b+c+d&lE;90, wherein the crystal structure of a principal phase is a body-centered cubic structure, and further, the alloy contains at least one of Mo and W in place of V and at least one member selected from the group consisting of Y (yttrium), lanthanoids, Pd and Pt, and its crystal structure is converted to the body-centered cubic structure by heat-treatment.
Toyota Jidosha Kabushiki Kaisha
Y H C C Y C
Y10S H01M C22C C22C Y02E C22C
additional inventional inventional inventional additional inventional
Toshihiro Hideki
Mori Iba