Preparation of amorphous Ni-Mo alloy by pulse electrodeposition and its hydrogen evolution properties

Abstract

Abstract: Electrolytic aquatic hydrogen is one of the widely technologies to product hydrogen because of the advantages of abundant raw materials, clean production process and high efficiency. The different amorphous Ni-Mo alloy coatings were prepared by pulse electrodeposition under different current density and duty cycle, and the effects of current density and duty cycle on the properties of the coating were studied. The results showed that the Mo content is decreased and the surface become the rougher with the increase of the duty cycle and the current density, and the amorphous Ni-Mo alloy coating with very rough surface can be obtained under the current density of 2.5A·dm^－2 and the duty cycle of 0.8. In addition, the alloy coating possessed smaller grain size is prepared under the duty cycle of 0.6 and the current density of 2.0 A·dm^－2. The Ni-Mo alloy with the rough surface show better catalytic performance for hydrogen evolution under the large overpotential, and the alloy coating with the high Mo content and the fine grain size has good catalytic activity for hydrogen evolution.

Key words: pulse electrodeposition, Ni-Mo alloy, hydrogen evolution reaction, catalyzer

CLC Number:

TG139.8

YANG Ya-hui, LI Qing-lin. Preparation of amorphous Ni-Mo alloy by pulse electrodeposition and its hydrogen evolution properties[J]. Journal of Lanzhou University of Technology, 2022, 48(2): 16-20.

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