采用脉冲电沉积制备了纳米晶镍-钨-铁-镧合金镀层,并在氩气保护下对镀层进行了热处理;用SEM和XRD分析了镀层的形貌与物相组成,通过极化曲线、循环伏安曲线和交流阻抗谱考察了不同状态镀层的电催化析氢性能.结果表明:镀层表面颗粒均匀、排列紧密、无裂纹,其组织是以镍为溶剂、钨和铁为溶质的置换型固溶体;经200℃×60 min热处理后,镀层析氢性能最好,与传统铁电极相比,析氢电位正移了250 mV.
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