Electrodeposited hybrid Ni
By Han, Guan-Qun; Li, Xiao; Xue, Jing; Dong, Bin; Shang, Xiao; Hu, Wen-Hui; Liu, Yan-Ru; Chi, Jing-Qi; Yan, Kai-Li; Chai, Yong-Ming; Liu, Chen-Guang
Published in International Journal of Hydrogen Energy
NULL
2016
Abstract
Abstract The hybrid Ni-P/MoSx film as efficient electrocatalyst for hydrogen evolution reaction (HER) in alkaline media has been successfully synthesized through a facile two-step electrodeposition process. The obtained hybrid Ni-P/MoSx can possess the improved activity and conductivity owing to the incorporation of Ni-P. Scanning electron microscopy (SEM) shows that the edge sites of MoSx have not been completely covered by Ni-P, exposing more active sites for HER. The better dispersion of Ni-P on the surface of MoSx has been obtained, implying the enhancement of the conductivity of Ni-P/MoSx film. The electrochemical measurements confirm that Ni-P/MoSx film has the better activity for {HER} than pure Ni-P and MoSx, with an overpotential of 140 mV (at j = 10 mA cm?2) and a low Tafel slope of 64 mV dec?1. The improved {HER} activity may be attributed to the excellent conductivity of Ni-P and the synergistic effect derived from hybrid Ni-P/MoSx film.
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