ELECTROCHEMICAL CYCLING STABILITY OF (Zr,Ti)(V,Mn,Pd,Ni,Fe)_2 HYDRIDE ELECTRODES
YANG Hiaoguang; LEI Yongquan; ZHANG Wenkui; ZHU Guangming;WANG Qidong (Zhejiang University; Hangzhou 310027) (Manuscript received 1995-11-21 ; in revised form 1996-04-26)
Cite this article:
YANG Hiaoguang; LEI Yongquan; ZHANG Wenkui; ZHU Guangming;WANG Qidong (Zhejiang University; Hangzhou 310027) (Manuscript received 1995-11-21 ; in revised form 1996-04-26). ELECTROCHEMICAL CYCLING STABILITY OF (Zr,Ti)(V,Mn,Pd,Ni,Fe)_2 HYDRIDE ELECTRODES. Acta Metall Sin, 1996, 32(8): 852-856.
Abstract (Zr1-yTiy)(V,Mn,Pd,Ni,Fe)2 hydride electrodes have higher electrochemical capacities(371 mA . h/g at a current of 50 mA/g and room temperature). The electrochemical capacities of electrodes decayed during cycling due to severe oxidation of 3d transition metals and selective dissolution of some alloy components, which brings lattice distortion of C14 Laves phase and lose of hydrogen storage ability. The decrease in Ti content is favourable to prolong the cycling lives of hydride electrodes. Correspondent:( YANG Xiaoguang, lecturer, Department of Materials Scicnce and Engineering, Zhejiang University, Hangzhou 310027)