Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8961292 | International Journal of Hydrogen Energy | 2018 | 7 Pages |
Abstract
The electrocatalytic hydrogen evolution reaction (HER) performance of carbon-coated β-NiS (NiS@C) nanocrystals has been investigated for the first time. The NiS@C nanocrystals were synthesized via a facile solvothermal method followed by in-situ carbonization process with the solvent (ethylene glycol) as the carbon source. Benefited from the well-dispersed NiS nanocrystals and the formation of carbon layer on NiS nanocrystals, the NiS@C nanocrystals displayed a high HER activity in 0.5 M H2SO4, which needed an overpotential of 85 mV to achieve current density of 10 mA cmâ1 with a Tafel slope of 46 mV decâ1, as well as long term stability for HER. Additionally, the NiS@C nanocrystals also showed efficient electrocatalytic activity under alkaline media.
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Authors
Jianfang Zhang, Yan Wang, Jiewu Cui, Jingjie Wu, Xia Shu, Cuiping Yu, Huizhong Bai, Mengyuan Zhai, Yongqiang Qin, Hongmei Zheng, Yanwu Zhu, Yong Zhang, Yucheng Wu,