Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7705305 | International Journal of Hydrogen Energy | 2018 | 9 Pages |
Abstract
To achieve sustainable production of H2 fuel through water splitting, noble-metal-free catalysts have been extensively studied for hydrogen evolution reaction (HER), especially molybdenum-based catalysts. Herein, we report the Ni, N-codoped MoCx (Ni-N-MoCx) nanoparticles synthesized from NiMoO4 precursor by oily-solvent-assisted strategy, following the calcination with dicyandiamide. As-obtained Ni-N-MoCx in different magnified SEM images shows grainy structure, MoCx nanoparticles uniformly disperse in carbon substrate. The obtained electrocatalysts can also efficiently electrocatalytic HER in a wide pH value. Ni-N-MoCx shows an onset potential of â74Â mV, an overpotential of 163Â mV to reach a current density of 10Â mA/cm2 in acid media, an onset potential of â37Â mV and overpotential of 124Â mV to reach 10Â mA/cm2 in alkaline media. The present study provides some guidelines for preparing the uniformly doped electrocatalysts from multiple compounds with devolatilization characteristics.
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Authors
Jie Chen, Jin Jia, Zhaoqian Wei, Guixiang Li, Jiayuan Yu, Linjing Yang, Tanli Xiong, Weijia Zhou, Qingxiao Tong,