Facilitating alkaline hydrogen evolution reaction on the hetero-interfaced Ru/RuO<sub>2</sub> through Pt single atoms doping.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38365760.
- Also identified by DOI 10.1038/s41467-024-45654-9 and PMC identifier 10873302.
- 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 an active and cost-effective electrocatalyst alternative to carbon-supported platinum nanoparticles for alkaline hydrogen evolution reaction (HER) have remained elusive to date. Here, we report a catalyst based on platinum single atoms (SAs) doped into the hetero-interfaced Ru/RuO<sub>2</sub> support (referred to as Pt-Ru/RuO<sub>2</sub>), which features a low HER overpotential, an excellent stability and a distinctly enhanced cost-based activity compared to commercial Pt/C and Ru/C in 1 M KOH. Advanced physico-chemical characterizations disclose that the sluggish water dissociation is accelerated by RuO<sub>2</sub> while Pt SAs and the metallic Ru facilitate the subsequent H* combination. Theoretical calculations correlate with the experimental findings. Furthermore, Pt-Ru/RuO<sub>2</sub> only requires 1.90 V to reach 1 A cm<sup>-2</sup> and delivers a high price activity in the anion exchange membrane water electrolyzer, outperforming the benchmark Pt/C. This research offers a feasible guidance for developing the noble metal-based catalysts with high performance and low cost toward practical H<sub>2</sub> production.