电解水制氢是一项制取绿色氢能的重要技术,开发高催化活性的催化剂作为电极材料是当前的研究热点。电解水反应包括阴极的析氢反应和阳极的析氧反应,以Ni74Mo6Cu20三元合金条带为前驱体,采用电化学脱合金技术制备了一种用于析氢反应的表面纳米多孔NiMoCu电解水析氢催化剂,并采用扫描式电子显微镜、X射线衍射仪、X射线光电子能谱仪等设备对材料的物理化学特性进行了表征。结果表明:所制备的纳米多孔NiMoCu电极材料在1mol/L KOH溶液中具有良好的析氢性能,仅需要90mV、227mV的过电位就能达到10mA/cm2、100mA/cm2的电流密度。
Electrochemical water splitting is an important technique to produce hydrogen.Developing highly active catalyst as electrode material has been a hot spot.The electrochemical water splitting reaction consists of two half reactions,the hydrogen evolution reaction on the cathode and the oxygen evolution reaction on the anode.On the basis of electrochemical dealloying method,a surface nanoporous NiMoCu electrode materials were prepared for hydrogen evolution reaction with NiMoCu ribbon precursor.Scanning electron microscope,x-ray diffractometer and x-ray energy spectrometer were utilized for material characterization.The as-prepared material exhibited favorable catalytic performance in 1mol/L KOH solution,which only required an overpotential of 90mV,227mV to obtain the current density of 10mA/cm2,100mA/cm2 respectively.
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基金资助
油气田应用化学四川省重点实验室开放基金项目(YQKF202011)
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