采用恒电流沉积方法在水溶液中沉积出LaMgNi_4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.
The film of LaMgNi_4 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.
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