Nanoporous Ni3S2 Film on Ni Foam as Highly Efficient Electrocatalyst for Hydrogen Evolution in Acidic Electrolyte
- Authors: Yang Y.J.1, Hu X.1
- 
							Affiliations: 
							- School of Chemistry and Chemical Engineering
 
- Issue: Vol 55, No 2 (2019)
- Pages: 88-96
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/191833
- DOI: https://doi.org/10.1134/S1023193519010154
- ID: 191833
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Abstract
In this work, nanoporous Ni3S2 film (Ni3S2/Ni) is in situ synthesized by direct sulfurization of Ni foam under a mild hydrothermal process. Surprisingly, it is found out that the obtained Ni3S2/Ni exhibits outstanding HER activity and excellent stability in acidic electrolyte. The structure and nature of the Ni3S2/Ni are analyzed with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscope (FE-SEM). On Ni3S2/Ni, the onset potential is only −6.23 mV (vs. RHE) while the large exchange current density is 790 µA cm−2 and the Tafel slope is 62.47 mV dec−1. The experimental results demonstrate the potential of Ni3S2/Ni for its replacement of Pt-based catalysts.
About the authors
Yu Jun Yang
School of Chemistry and Chemical Engineering
							Author for correspondence.
							Email: yangyujun@yahoo.com
				                					                																			                												                	China, 							Xuchang, 461000						
Xuan Hu
School of Chemistry and Chemical Engineering
														Email: yangyujun@yahoo.com
				                					                																			                												                	China, 							Xuchang, 461000						
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