Strandberg-type polyoxometalate deriving O,P co-doped NiMoS/CC catalyst for highly efficient hydrogen evolution electrocatalysis

Hydrogen production from electrolytic water is an indispensable component in the field renewable energy. The preparation of electrocatalysts with low price and high perfor-mance is essential for hydrogen evolution reaction (HER). Herein, Strandberg-type poly-oxometalate was used as pre-assembled molecular platforms to construct and regulate NiMoS active sites at the atomic level. O,P doping was performed to boost the number active sites using controllable sulfidation method. O,P-NiMoS nanoparticles supported on highly conductive carbon cloth exhibit significant activity for HER. The overpotential are only 39 and 30 mV at a current density of 10 mA cm(-2) in both acidic and alkaline solutions, respectively. This excellent performance can be attributed to the finely tailored NiMoS active sites, increase of S-unsaturated species and the synergistic effect between carbon cloth and O,P-NiMoS. Therefore, this study provides a feasible strategy for rational design of efficient electrocatalysts for renewable energy applications. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study utilized Strandberg-type polyoxometalate as pre-assembled molecular platforms to construct and regulate NiMoS active sites at the atomic level. O,P doping was performed to boost the number of active sites using a controllable sulfidation method, resulting in O,P-NiMoS nanoparticles with significant catalytic activity. This research provides a feasible strategy for the rational design of efficient electrocatalysts for renewable energy applications.