Hydrogen evolution of a MoS/AOCF electrocatalyst doped with Ni element

Efficiency and stability are the key factors of MoS 2 electrocatalysts. Herein, a MoS 2 complex (Ni@MoS 2 /AOCF) was successfully prepared by amidoximized polyacrylonitrile (AOCF) coordination and Ni doping. Impressively, the as-synthesized Ni@MoS 2 /AOCF electrocatalyst exhibited satisfying hydrogen evolution reaction (HER) performance with a low onset potential (116 mV) and small Tafel slope (54.8 mV dec −1 ). The structure and performance characterizations indicate that MoS 2 grow epitaxially on AOCF via coordination bonds formed between Mo and -OH and -NH 2 of AOCF, and the strong bonding effect endows MoS 2 /AOCF with numerous active sites and excellent stability. Besides, the conductivity of MoS 2 /AOCF is obviously improved by Ni element doping and finally results in superior HER performance in acidic solutions. The introduced polymers ability can replace the traditional Nafion adhesive, uniformly disperse particles and increase active sites.