Liu, Y.Liu, J.Li, Z.Fan, X.Li, Y.Zhang, F.Zhang, G.Peng, W.Wang, S.2018-09-202018-09-202018International Journal of Hydrogen Energy, 2018; 43(30):13946-139520360-31991879-3487http://hdl.handle.net/2440/114514Available online 2 March 2018Porous graphene (P-rGO) was synthesized from graphene oxide (GO) via a one-pot calcination method with CO<inf>2</inf> as an activation agent at 800 °C. Due to the special porous structure, the surface area of P-rGO can be increased to ∼759 m²/g. The P-rGO was then used as a support to incorporate with chemical exfoliated molybdenum disulfide (MoS<inf>2</inf>) for the fabrication of MoS<inf>2</inf>/P-rGO composite. Compared to bulk MoS<inf>2</inf>, the exfoliated MoS<inf>2</inf> is in the 1T phase with a metallic property and smaller charge transfer resistance, thus has a better activity in electrochemical hydrogen evolution reaction (HER). The HER activity of 1T MoS<inf>2</inf> could be further increased after the combination with P-rGO. The overpotential of 1T MoS<inf>2</inf>/P-rGO was only ∼130 mV vs. RHE, and the corresponding Tafel slope was ∼75 mV Dec⁻¹. The special porous structure and good electric conductivity of P-rGO decrease the charge transfer resistance of the composite without sheltering too many active sites of MoS<inf>2</inf>, thus leading to the enhanced HER activity. As an efficient noble metal free HER catalyst, the 1T MoS<inf>2</inf>/P-rGO has great potential for large-scale hydrogen production.en© 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Porous graphene; MoS₂ nanosheets; hydrogen evolution reaction; electrocatalysisJournal article003009652710.1016/j.ijhydene.2018.02.0390004407711000282-s2.0-85042629807435459Wang, S. [0000-0002-1751-9162]