Electrodeposition of Ni-Mo Alloy from Ionic Liquids and Its Catalytic Properties for Hydrogen Evolution

Abstract

Based on carbon felt, C-Ni electrode was electrodeposited with Watt nickel plating process; then the Ni-Mo alloy electrode was obtained based on C-Ni electrode that has been prepared in ionic liquids system. Its surface morphology and structure were performed with scanning electric microscope and X-ray diffractometer, respectively; and its property of electrochemical catalyzed hydrogen evolution has been studied by means of cathodic polarization curves and A.C. impedance technique. Experimental results suggest that the prepared C-Ni/Ni-Mo alloy contains about 5.12% Mo and has a nanocrystalline structure with average crystallites sizes of 2.2 nm; and polarization curves indicate that the catalytic hydrogen evolution potential of Ni-Mo/C-Ni alloy electrode deposited in ionic liquid has a positively shift of about 108 mV compared with C-Ni electrode and about 557 mV compared with C felt electrode and about 50 mV compared with Ni-Mo based on Cu substrate in aqueous solution under the current density of 0.1 A·cm²; the potential fluctuation of Ni-Mo/C-Ni alloy electrode is slight during a prolonged electrolysis, and the potential is able to recover rapidly after short current interruption. So Ni-Mo/C-Ni alloy electrode shows a good electrochemical stability.

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	Wang Hongzhi
	Zhang Xiaozhen
	Huang Bo
	Zhang Weiguo
	Jiang Shisheng
	Yao Suwei

Keywords： carbon felt； ionic liquids； electrodeposition； Ni-Mo alloy； catalytic hydrogen evolution

Received 2015-02-03;

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Wang Hongzhi, Zhang Xiaozhen, Huang Bo, Zhang Weiguo, Jiang Shisheng, Yao Suwei.Electrodeposition of Ni-Mo Alloy from Ionic Liquids and Its Catalytic Properties for Hydrogen Evolution[J] Chemcial Industry and Engineering, 2017,V34(1): 53-59

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