Electrochemical properties of TiV-based hydrogen storage alloys
来源期刊：中国有色金属学报(英文版)2003年第1期
论文作者：朱云峰 李锐 高明霞 刘永锋 潘洪革 王启东
文章页码：33 - 37
Key words：super-stoichiometry; TiV-based hydrogen storage alloy; C14 Laves phase; V-based solid solution; electrochemical property
Abstract: The electrochemical properties of the super-stoichiometric TiV-based hydrogen storage electrode alloys(Ti0.8Zr0.2)(V0.533Mn0.107Cr0.16Ni0.2)x(x=2, 3, 4, 5, 6) were studied. It is found by XRD analysis that all the alloys mainly consist of a C14 Laves phase with hexagonal structure and a V-based solid solution phase with BCC structure. The lattice parameters and the unit cell volumes of the two phases decrease with increasing x. The cycle life, the linear polarization, the anode polarization and the electrochemical impedance spectra of the alloy electrodes were investigated systematically. The overall electrochemical properties of the alloy electrode are found improved greatly as the result of super-stoichiometry and get to the best when x=5
