Preparation of Ni10Mo/CF composite as an electrocatalyst for hydrogen evolution reaction in alkali solution
PU Jiaxuan1, CAO Jun2, WEI Qiuping1, YIN Dengfeng1, MA Li2, ZHOU Kechao2
1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
Abstract:Ni10Mo/Cu foam (CF) electrode was prepared by electrochemical depositing the Ni10Mo film on CF. Ni10Mo/CF electrodes with different Ni10Mo contents and particle sizes were obtained by changing the deposition time, the surface morphology and electrochemical hydrogen evolution reaction (HER) performance of Ni10Mo/CF electrodes were also explored. The morphology of Ni10Mo alloy nanoparticles was studied by SEM analysis, and the composition of Ni10Mo was studied by EDS and XRD analysis. The electrochemical activity of the electrodes was comprehensively evaluated by linear scanning voltammetry (LSV), testing electrochemical double-layer capacitance, and stability tests. The results show that the morphology of the catalysts depends on the deposition time. With the increase of the deposition time, the HER catalytic activity of Ni10Mo alloy nanoparticles in 1 M KOH increases first and then decreases, when the current density remain the same. Among them, when the deposition time is 6 min, the electrode shows an overpotential of 227 mV at 10 mA/cm2 and exhibits excellent stability.
蒲佳璇, 曹军, 魏秋平, 尹登峰, 马莉, 周科朝. Ni10Mo/CF复合材料的制备及析氢性能研究[J]. 粉末冶金材料科学与工程, 2020, 25(3): 260-266.
PU Jiaxuan, CAO Jun, WEI Qiuping, YIN Dengfeng, MA Li, ZHOU Kechao. Preparation of Ni10Mo/CF composite as an electrocatalyst for hydrogen evolution reaction in alkali solution. Materials Science and Engineering of Powder Metallurgy, 2020, 25(3): 260-266.
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