Ti_3B_4表面修饰对Mg_(45)Ti_3V_2Ni_(50)合金电极循环稳定性的影响

Effect of Ti_3B_4 Surface Modification on Electrochemical Cycle Stability of Mg_(45)Ti_3V_2Ni_(50) Alloy Electrode

用机械合金化法合成不同组成的Ti-B系列的复合物与Mg45Ti3V2Ni50储氢合金。探索Ti、B复合修饰对Mg45Ti3V2Ni50合金循环稳定性的影响,筛选出对Mg45Ti3V2Ni50合金电极综合修饰效果较好的Ti3B4。将Ti3B4以不同质量比对Mg45Ti3V2Ni50合金电极球磨修饰。结果表明:不同比例的修饰,对储氢合金电极循环稳定性的提高程度不同,持久性不同,Ti与B复合修饰提高镁基储氢合金的循环寿命存在一个最佳组成和最佳比例。

A series of Ti-B complexes with different composition and Mg45Ti3V2Ni50 hydrogen-storage alloys were synthesized by ball-milling.The effect of modification of Ti-B complexes on the cycle stability of Mg45Ti3V2Ni50 alloys was discussed and the Ti3B4 with a better comprehensive modification effect for Mg45Ti3V2Ni50 alloy electrode was selected.Mg45Ti3V2Ni50 alloy electrode was modified with different mass ratios of Ti3B4 by ball-milling.The results show that the improvement degree of cycle stability and persistence is different due to different ratios of modification.There is a best composition of Ti-B and ratio of modification in the surface-modification process of Ti-B for the Mg-based hydrogen storage alloys in order to improve the cycle stability