Hydrogen Storage Alloys with PuNi[sub 3]-Type Structure as Metal Hydride Electrodes

Abstract

A powder sintering method was used to synthesize the intermetallic compounds , , , and . The microstructure and primary phases were observed by scanning electron microscopy and X‐ray diffraction. The pressure‐composition isotherms showed that all alloys could reversibly absorb and desorb up to hydrogen at and a hydrogen pressure of . The sintered samples were employed as the active materials of metal hydride electrodes. The hydride stability and electrochemical performance, combined with low cost raw materials, make these compounds attractive for metal hydride electrodes. ©2000 The Electrochemical Society