Solvent-free microwave synthesis of ultra-small Ru-Mo<sub>2</sub>C@CNT with strong metal-support interaction for industrial hydrogen evolution.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 34188063.
- Also identified by DOI 10.1038/s41467-021-24322-2 and PMC identifier 8242096.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Exploring a simple, fast, solvent-free synthetic method for large-scale preparation of cheap, highly active electrocatalysts for industrial hydrogen evolution reaction is one of the most promising work today. In this work, a simple, fast and solvent-free microwave pyrolysis method is used to synthesize ultra-small (3.5 nm) Ru-Mo<sub>2</sub>C@CNT catalyst with heterogeneous structure and strong metal-support interaction in one step. The Ru-Mo<sub>2</sub>C@CNT catalyst only exhibits an overpotential of 15 mV at a current density of 10 mA cm<sup>-2</sup>, and exhibits a large turnover frequency value up to 21.9 s<sup>-1</sup> under an overpotential of 100 mV in 1.0 M KOH. In addition, this catalyst can reach high current densities of 500 mA cm<sup>-2</sup> and 1000 mA cm<sup>-2</sup> at low overpotentials of 56 mV and 78 mV respectively, and it displays high stability of 1000 h. This work provides a feasible way for the reasonable design of other large-scale production catalysts.