Solvent-free microwave synthesis of ultra-small Ru-Mo2C@CNT with strong metal-support interaction for industrial hydrogen evolution

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 synthes...

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Veröffentlicht in:Nature communications 2021-06, Vol.12 (1), p.4018-4018, Article 4018
Hauptverfasser: Wu, Xueke, Wang, Zuochao, Zhang, Dan, Qin, Yingnan, Wang, Minghui, Han, Yi, Zhan, Tianrong, Yang, Bo, Li, Shaoxiang, Lai, Jianping, Wang, Lei
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Sprache:eng
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Zusammenfassung: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 2 C@CNT catalyst with heterogeneous structure and strong metal-support interaction in one step. The Ru-Mo 2 C@CNT catalyst only exhibits an overpotential of 15 mV at a current density of 10 mA cm −2 , and exhibits a large turnover frequency value up to 21.9 s −1 under an overpotential of 100 mV in 1.0 M KOH. In addition, this catalyst can reach high current densities of 500 mA cm −2 and 1000 mA cm −2 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. While H 2 could be a renewable fuel, the large-scale preparation of cheap, active electrocatalysts for large-scale production remains a challenge. Here, authors use a rapid, solvent-free microwave pyrolysis method to synthesize nanostructured catalysts for large-scale industrial H 2 production.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-021-24322-2