Mo modulation effect on the hydrogen binding energy of hexagonal-close-packed Ru for hydrogen evolution
Journal of Materials Chemistry A, ISSN: 2050-7496, Vol: 7, Issue: 6, Page: 2780-2786
2019
- 61Citations
- 23Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
As a cheaper Pt-group metal, ruthenium (Ru) is a highly competitive alternative to Pt for commercialization towards the hydrogen evolution reaction (HER). Herein, we report the modulation effect on the Gibbs free energy (ΔG ) of hexagonal-close-packed (hcp) Ru resulting from heteroatom Mo doping. In particular, for the first time the hcp MoRu crystal structure is theoretically predicted with pretty high intrinsic HER activity. Meanwhile, the Mo hetero-dopant could act as a new active site with Pt-like ΔG . Motivated by the prediction, we report a novel metal organic framework (MOF)-assisted synthetic strategy to prepare a Mo-doped hcp Ru electrocatalyst. Accordingly, the hcp MoRu catalyst exhibits an ultralow overpotential of 30.5 mV at 10 mA cm , ensuring excellent Pt-like intrinsic HER activity. More importantly, the excellent electrochemical performance measured with a proton exchange membrane (PEM) electrolyzer further highlights the promising potential of the hcp MoRu catalyst for hydrogen production.
Bibliographic Details
Royal Society of Chemistry (RSC)
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