Abstract
A novel three-dimensional (3D) hybrid consisting of molybdenum disulfide nanosheets (MoS2) uniformly bound at N-doped macro-mesoporous carbon (N-MMC) surface was fabricated by the solvothermal method. The resulting MoS2/N-MMC hybrid possesses few layer MoS2 nanosheets structure with abundant edges of MoS2 exposed as active sites for hydrogen evolution reaction (HER), in sharp contrast to large aggregated MoS2 nanoflowers without N-MMC. The high electric conductivity of N-MMC and an abundance of exposed edges on the MoS2 nanosheets make the hybrid excellent electrocatalytic performance with a low onset potential of 98 mV, a small Tafel slope of 52 mV/decade, and a current density of 10 mA cm(-2) at the overpotential of 150 mV. Moreover, the MoS2/N-MMC hybrid exhibits outstanding electrochemical stability and structural integrity owing to the strong bonding between MoS2 nanosheets and N-MMC. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.