Journal
JOURNAL OF POWER SOURCES
Volume 472, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.228497
Keywords
MoS2/NiS; Hierarchical nanostructures; One-step hydrothermal reaction; Hydrogen evolution reaction
Funding
- NSFC [51602193]
- Shanghai Chen Guang project [16CG63]
- Fundamental Research Funds for the Central Universities [WD1817002]
- STFC Batteries Network [ST/R006873/1]
- EPSRC [EP/R023581/1, EP/P009050/1]
- EPSRC [EP/R023581/1, EP/P009050/1] Funding Source: UKRI
- STFC [ST/R006873/1] Funding Source: UKRI
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It is important to develop a low-cost and easy-prepared electrocatalyst for hydrogen evolution reaction. In this work, MoS2/NiS hierarchical nanostructures (HHs) were fabricated on Ni foam by a simple one-step hydrothermal reaction using Ni foam as raw materials directly. Owing to the unique synthetic strategy that provide uniform MoS2/NiS HHs structure on the porous Ni foam, generate abundant active surfaces, small resistance, furthermore it is beneficial for carrier migration and contributing to a large number of active sites. Excellent electrocatalytic performances are obtained such as an overpotential of only similar to 84.1 mV to reach the current density of 10 mA cm(-2), a Tafel slope of 76.9 mV dec(-1) and a small inherent resistance of 6.33 Omega. More importantly, a quick current response under multistep potentials is realized and an excellent stability retained after 3000 cycles of CV test. Besides, a DC power to supply a device (MnMoO4//MoS2/NiS HHs B) under 1.6 V can generate a current density of 21 mA cm(-2), demonstrating its practical application.
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