Facile synthesis of MoS2/N-doped macro-mesoporous carbon hybrid as efficient electrocatalyst for hydrogen evolution reaction

A novel three-dimensional (3D) hybrid consisting of molybdenum disulfide nanosheets (MoS 2 ) uniformly bound at N-doped macro-mesoporous carbon (N-MMC) surface was fabricated by the solvothermal method . The resulting MoS 2 /N-MMC hybrid possesses few-layer MoS 2 nanosheets structure with abundant edges of MoS 2 exposed as active sites for hydrogen evolution reaction (HER), in sharp contrast to large aggregated MoS 2 nanoflowers without N-MMC. The high electric conductivity of N-MMC and an abundance of exposed edges on the MoS 2 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 MoS 2 /N-MMC hybrid exhibits outstanding electrochemical stability and structural integrity owing to the strong bonding between MoS 2 nanosheets and N-MMC.