Few-layered ReStwo-dimensional(2 D) semiconductor nanosheets directly nucleated and grown on reduced graphene oxide(RGO) were synthesized through a facile hydrothermal method. Compared with bare ReS, the ReS2/RGO hybr...Few-layered ReStwo-dimensional(2 D) semiconductor nanosheets directly nucleated and grown on reduced graphene oxide(RGO) were synthesized through a facile hydrothermal method. Compared with bare ReS, the ReS2/RGO hybrid delivers much better electrocatalytic activity for hydrogen evolution reaction(HER) in acidic media. It exhibits a lower Tafel slope of 107.4 mV decand a larger current density of-5.2 mA·cmat-250 mV(vs. RHE),compared with ReS(152.7 mV·dec,-3.1 mA·cm). The ReS/RGO hybrid has a unique architecture constructed by highly conductive and porous RGO internetworks, which guarantees easy electrolyte infiltration and efficient charge transfer and provides sufficient active edge sites, resulting in enhanced HER performance. The present synthesis approach can be extended to synthesize other 2 D-semiconductor-based composites for energy storage and catalytic devices.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 51372033)the National High Technology Research and Development Program of China (No. 2015AA034202)the Program of the Ministry of Education of China for Introducing Talents of Discipline to Universities (No. B13042)
文摘Few-layered ReStwo-dimensional(2 D) semiconductor nanosheets directly nucleated and grown on reduced graphene oxide(RGO) were synthesized through a facile hydrothermal method. Compared with bare ReS, the ReS2/RGO hybrid delivers much better electrocatalytic activity for hydrogen evolution reaction(HER) in acidic media. It exhibits a lower Tafel slope of 107.4 mV decand a larger current density of-5.2 mA·cmat-250 mV(vs. RHE),compared with ReS(152.7 mV·dec,-3.1 mA·cm). The ReS/RGO hybrid has a unique architecture constructed by highly conductive and porous RGO internetworks, which guarantees easy electrolyte infiltration and efficient charge transfer and provides sufficient active edge sites, resulting in enhanced HER performance. The present synthesis approach can be extended to synthesize other 2 D-semiconductor-based composites for energy storage and catalytic devices.
