Electrodeposition of Ni-Mo alloy from deep eutectic solvents and its catalytic properties for hydrogen generation

doi:10.3969/j.issn.0438-1157.2014.11.044

Abstract

Abstract: Ni-Mo alloys were electrodeposited in the deep eutectic solvent system. To obtain the information on deposit's morphology, structure and hydrogen evolution activity, scanning electron microscopy (SEM), X-ray diffraction (XRD) and polarization curve test were used respectively. SEM images and XRD pattern showed that the prepared alloy had a nanocrystalline structure with average crystallites size of 2.2 nm. The deposit contained about 5% (mass) Mo and had a large roughness factor. Polarization curves indicated that hydrogen generation potential of Ni-Mo alloy deposited in ionic liquid had a positively shift of about 100 mV compared to Ni-Mo alloy deposited in aqueous solution and had a positive shift of about 250 mV compared to pure Ni electrode at current density of 0.1 A·cm².

Key words: deep eutectic solvents, electrochemistry, Ni-Mo alloy, catalysis, hydrogen generation reaction

摘要： 在深共融溶剂体系中电沉积制备了Ni-Mo合金.利用扫描电镜(SEM)、X射线衍射仪(XRD)及电化学测试对Ni-Mo合金形貌、结构及性能进行了表征.SEM、XRD测试结果表明,Ni-Mo合金为纳米晶结构,平均晶粒尺寸约为2.2 nm;镀层表面微观粗糙度较大,Mo的质量分数约为5%.阴极极化曲线测试结果表明,当电流密度为0.1 A·cm^-2时,深共融溶剂中制备的Ni-Mo合金电极析氢电位比水溶液中制备的Ni-Mo合金电极正移约100 mV,相比纯Ni电极正移近250 mV.

关键词: 深共融溶剂, 电化学, Ni-Mo合金, 催化, 析氢反应

CLC Number:

TQ153.2
O646

WANG Hongzhi, HUANG Bo, ZHANG Weiguo, LIU Xiangting, YAO Suwei. Electrodeposition of Ni-Mo alloy from deep eutectic solvents and its catalytic properties for hydrogen generation[J]. CIESC Journal, 2014, 65(11): 4524-4529.

王宏智, 黄波, 张卫国, 刘祥亭, 姚素薇. 深共融溶剂中电沉积Ni-Mo合金及其催化析氢性能[J]. 化工学报, 2014, 65(11): 4524-4529.

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