Hydrogen evolution of a MoS 2 /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.