“…, FeTi, Mg Ni, and AB -type Laves phase are wellknown hydrogen-storage intermetallic compounds that have been investigated by many researchers (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Among these intermetallic compounds, LaNi , FeTi, and E Fe , one of the AB -type Laves phases, have equilibrium plateau pressures higher than 1 bar even at 273 K, and therefore the heat necessary for hydrogen evolution can be easily provided from the cooling water used for heat exchange.…”