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Issue 5, 2015

Ni-doped Mo2C nanowires supported on Ni foam as a binder-free electrode for enhancing the hydrogen evolution performance

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Abstract

In this study, an inexpensive electrocatalyst, Ni-doped Mo2C nanowires, were grown directly on Ni foam via a hydrothermal reaction combined with a carburization process. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and linear scanning voltammetry (LSV) were used to scrutinize the catalysts and their electrochemical performance. The results showed that the designed NiMo2C/NF catalyst displays enhanced catalytic activity toward hydrogen production with a low onset overpotential of 21 mV. For driving a cathodic current density of 100 mA cm−2, it only needs an overpotential of 150 mV. Such excellent performance of NiMo2C/NF could be ascribed to the high intrinsic activity from a synergistic function of Ni and Mo2C, as well as to the exposure of more Ni-doped Mo2C sites provided by the high aspect ratio of a one-dimensional (1D) structure and rich surface area.

Graphical abstract: Ni-doped Mo2C nanowires supported on Ni foam as a binder-free electrode for enhancing the hydrogen evolution performance

Supplementary files

Article information


Submitted
23 Oct 2014
Accepted
01 Dec 2014
First published
01 Dec 2014

J. Mater. Chem. A, 2015,3, 1863-1867
Article type
Communication

Ni-doped Mo2C nanowires supported on Ni foam as a binder-free electrode for enhancing the hydrogen evolution performance

K. Xiong, L. Li, L. Zhang, W. Ding, L. Peng, Y. Wang, S. Chen, S. Tan and Z. Wei, J. Mater. Chem. A, 2015, 3, 1863 DOI: 10.1039/C4TA05686H

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