Ni-Fe-S three elemental alloy coating was prepared on nickel foil by electrodeposition method on the basis of preparation of Ni-S alloy electrode and adding ferrous sulfate into the bath. The electrode surface morphology, phase composition, and valence state of elements were respectively analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy(XPS). The electro-catalytic hydrogen evolution performance and corrosion resistance of the coating electrode in KOH electrolyte were tested by electrochemical workstation, and compared with Ni-S alloy coating electrode. The results show that the surface of Ni-Fe-S coating electrode is composed of many tumor-like protrusions with rich surface structure, while the addition of Fe element can improve the amorphous degrees of alloy coating and corrosion resistance in alkaline electrolyte. Hydrogen evolution over potential of Ni-Fe-S electrode is reduced by 128 mV (36.6%) compared with Ni-S electrode. It indicates that Ni-Fe-S electrode has superior performance of catalytic hydrogen evolution.%采用电沉积法在制备Ni-S合金涂层电极的基础上,向镀液中添加硫酸亚铁,在镍箔表面制备Ni-Fe-S三元合金镀层,利用扫描电镜和 X 射线衍射仪研究涂层的形貌和物相,利用 X 射线光电子能谱分析涂层的元素价态,用电化学工作站测试涂层电极在氢氧化钾电解质中的电催化析氢性能和耐蚀性能,并与 Ni-S 合金涂层电极进行对比.结果表明,Ni-Fe-S涂层电极表面由许多瘤状突起构成;Fe元素的加入提高了合金涂层的非晶度和对碱性电解质的耐蚀性;与Ni-S合金涂层电极相比,Ni-Fe-S涂层电极的析氢过电位降低128 mV(36.6%),表明电极对氢的析出反应具有较高催化活性.
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