Bai Jingyuan, Zhang Jin, Eiler Konrad, Yang Zhou, Fan Longyi, Yang Dalong, Zhang Meilin, Hou Yupu, Guan Renguo, Sort Jordi, Pellicer Eva
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China.
Nanomaterials (Basel). 2021 Dec 30;12(1):118. doi: 10.3390/nano12010118.
Ni-based bimetallic films with 20 at.% and 45 at.% Cu and mesostructured surfaces were prepared by electrodeposition from an aqueous solution containing micelles of P123 triblock copolymer serving as a structure-directing agent. The pH value of the electrolytic solution had a key effect on both the resulting Cu/Ni ratio and the surface topology. The catalytic activity of the CuNi films toward hydrogen evolution reaction was investigated by cyclic voltammetry (CV) in 1 M KOH electrolyte at room temperature. The CuNi film showed the highest activity (even higher than that of a non-mesostructured pure Ni film), which was attributed to the Ni content at the utmost surface, as demonstrated by CV studies, as well as the presence of a highly corrugated surface.
通过从含有作为结构导向剂的P123三嵌段共聚物胶束的水溶液中进行电沉积，制备了具有20原子％和45原子％铜以及介观结构表面的镍基双金属膜。电解液的pH值对所得的铜/镍比和表面拓扑结构都有关键影响。在室温下，通过循环伏安法（CV）在1M KOH电解液中研究了CuNi膜对析氢反应的催化活性。CuNi膜表现出最高的活性（甚至高于非介观结构的纯镍膜），这归因于CV研究表明的最表面的镍含量以及高度波纹状表面的存在。
