电沉积制备La-Mg-Ni贮氢合金薄膜及其性能的研究

Study on Electrodeposited Film of La-Mg-Ni Hydrogen Storage Alloy and Its Performance

摘要:

采用恒电流沉积方法在水溶液中沉积出LaMgNi4合金薄膜。利用循环伏安、模拟电池充放电循环、扫描电镜（SEM）以及X射线衍射（XRD）等方法研究了电沉积合金薄膜的电化学性能和表面形貌及结构。结果表明，该合金薄膜作为贮氢电极具有较好的电化学性能，其电化学活性高，活化性能好，首次充放电比容量达398 mAh/g。

Abstract:

The film of LaMgNi4 alloy was prepared by constant-current electrodeposition method in an aqueous solution. The electrochemical performance, surface morphology and structure of the film were studied by cyclic voltammetry, charge-discharge cycle, SEM and XRD. The results show that as a hydrogen storage electrode, the film has good electrochemical activity with no need for an activation procedure and the capacity reached 398 mAh/g in the first cycle.