Ni<sub>10</sub>Mo/CF复合材料的制备及析氢性能研究

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摘要采用电化学沉积技术在泡沫Cu(CF)表面沉积Ni₁₀Mo薄膜制备Ni₁₀Mo/CF电极。通过改变沉积时间,得到具有不同Ni₁₀Mo含量及不同表面形貌的电极。探究沉积时间对Ni₁₀Mo/CF电极表面形貌及电化学析氢性能的影响。通过SEM分析研究Ni₁₀Mo合金颗粒的形态,利用EDS和XRD分析研究Ni₁₀Mo的组成。通过线性扫描伏安法(LSV)、电化学双层电容测试以及稳定性试验来综合评估电极的电化学活性。结果表明,当电沉积电流密度保持不变时,催化剂的形态取决于电沉积时间。随沉积时间延长,Ni₁₀Mo合金颗粒的电催化析氢(HER)活性先增大后减小,其中,当电流密度为10 mA/cm²,沉积时间为6 min时,电极的过电势为227 mV,并展现出优异的稳定性。

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	蒲佳璇
	曹军
	魏秋平
	尹登峰
	马莉
	周科朝

关键词 ：电化学沉积, 镍钼合金, 电化学析氢, 泡沫铜

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/cm²and exhibits excellent stability.

Key words： electrochemical deposition nickel-molybdenum alloy hydrogen evolution reaction copper foam

收稿日期: 2020-03-23 出版日期: 2020-08-11

ZTFLH:

TB331

基金资助:国家重点研究开发计划资助项目(2016YFB0301400); 国家自然科学基金资助项目(51601226,51874370); 湖南省自然科学基金资助项目( 2019JJ40375,2019JJ50793)

通讯作者: 马莉,副教授,博士。电话：13787086046;E-mail: marycsupm@csu.edu.cn

引用本文:

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.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2020/V25/I3/260

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