Amidoximated Polyacrylonitrile Extended the Interlayer Spacing of MoS2/Graphite for Hydrogen Evolution Reaction

Hydrogen energy, as a clean energy, is an important direction of new energy development. Here, amidoximated polyacrylonitrile (AOCF) with coordination ability was introduced by solution-based blending method, and the electrocatalyst (N-MoS2/AOCF-C) with extended interlayer and multiphase structure was successfully synthesized. The structure characterization and experimental results showed that the spherical graphite mixed into the N-MoS2 composite. The interlayer of the composite was significantly expanded and the N-MoS2/C was randomly dispersed and anchored in AOCF matrix because the -OH and -NH2 of AOCF can form coordination bonds with Mo (IV) effectively. Therefore, the satisfactory hydrogen evolution reaction (HER) performance of N-MoS2/AOCF-C was attributed to the strong coordination bond effect and the addition of conducted carbon material. And the electrocatalyst displayed a lower overpotential (166 mV at a current density of 10 mA/cm(2)), a smaller Tafel slope (48.83 mV/dec), a larger electric double-layer capacitance (84.19 mF/cm(2)) and nice stability.