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/cm2), a smaller Tafel slope (48.83 mV/dec), a larger electric double‐layer capacitance (84.19 mF/cm2) and nice stability. The introduction of conduction graphite and coordination polymer dispersed and anchored the MoS2 nanosheets to form a nanocomposite with larger interlayer and good conduction, which provided different active sites for the hydrogen evolution reaction (HER) and replaced the traditional Nafion adhesive to effectively disperse the nanosheets in the polymer matrix, obtaining a satisfactory HER stability.