Structure
By Han, Guan-Qun; Liu, Yan-Ru; Hu, Wen-Hui; Dong, Bin; Li, Xiao; Shang, Xiao; Chai, Yong-Ming; Liu, Yun-Qi; Liu, Chen-Guang
Published in International Journal of Hydrogen Energy
NULL
2016
Abstract
Abstract Nanostructured plate-like island molybdenum sulfides (MoSx) film has been synthesized successfully through a facile one-step electrodeposition method from the mixture solution of N, N-dimethyl-formamide (DMF) and H2O. The effect of different ratio of {DMF} to {H2O} on the MoSx film has been investigated. Scanning electron microscopy (SEM) shows that when the ratio of {DMF} to {H2O} is 1:20, the as-prepared MoSx film exhibits maximum island structures, exposing most edges and rims. The electrochemical measurements confirm that MoSx film deposited in the mixed solution of VDMF: VH2O = 1:20 has the best hydrogen evolution reaction (HER) activity, with an overpotential of 80 mV. The improved {HER} activity may be attributed to the polarity difference of DMF-H2O and morphology directing of DMF. Therefore, using DMF-H2O mixture solution with the appropriate ratio may be a facile and effective way to prepare the excellent electrocatalysts for HER.
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