电源技术2017，Vol.41Issue(7)：1004-1006,1070,4.
还原剂处理对La-Mg-Ni系A2B7型贮氢合金性能的影响
Effect of surface treatment on reducing agent of La-Mg-Ni based A2B7 type hydrogen storage alloys
摘要
Abstract
Taking A2B7-type hydrogen storage alloy La0.75Mg0.25Ni3.3Co0.25 as an investigation object,the electrochemical properties of the alloy electrode treated by various reducers were studied.The results show that the treatment of reducing agent has an obvious effect on the activation property (the number of activation was only 2 time).Compared with untreated alloy,the surface treatment on reducing agent can greatly improve ~e mechanical properties of the alloys.S100 for treatment on KBH4,N2H4,NaH2PO2 are75.33％,78.70％ and 89.29％,respectively.The high rate discharge performance of hydride electrode was analyzed from the point of kinetic view.The results show that the exchange current density I0 and limiting current density h of hydride electrode handling for KBH4,N2H4,NaH2PO2 can be increased successively.The change in cyclic voltammograms oxidation peak area and electricity peaks of the alloy electrodes was similar for I0 and IL.All of the above indicate that the reduction treatment on the surface can effectively improve the kinetics performance of hydrogen absorbing and releasing processes of hydride electrode.The improvement of the high-rate discharge ability can be ascribed to the effect of the charge-transfer on the alloy surface and hydrogen diffusion rates in bulk of alloy.关键词
A2B7型贮氢合金/表面还原剂处理/电化学性能Key words
A2B7type hydrogen storage alloy/treatment by reducing agent/electrochemical properties分类
信息技术与安全科学引用本文复制引用
许剑轶,张博,李霞,张国芳,王瑞芬..还原剂处理对La-Mg-Ni系A2B7型贮氢合金性能的影响[J].电源技术,2017,41(7):1004-1006,1070,4.基金项目
国家自然科学基金(51501095) （51501095）
