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Ruthenium atomically dispersed in carbon outperforms platinum toward hydrogen evolution in alkaline media

Lu, Bingzhang ; Guo, Lin ; Wu, Feng ; Peng, Yi ; Lu, Jia En ; Smart, Tyler J ; Wang, Nan ; Finfrock, Y Zou ; Morris, David ; Zhang, Peng ; Li, Ning ; Gao, Peng ; Ping, Yuan ; Chen, Shaowei

Nature communications, 2019-02, Vol.10 (1), p.631-631, Article 631 [Periódico revisado por pares]

England: Nature Publishing Group

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Título:
Ruthenium atomically dispersed in carbon outperforms platinum toward hydrogen evolution in alkaline media
Autor: Lu, Bingzhang ; Guo, Lin ; Wu, Feng ; Peng, Yi ; Lu, Jia En ; Smart, Tyler J ; Wang, Nan ; Finfrock, Y Zou ; Morris, David ; Zhang, Peng ; Li, Ning ; Gao, Peng ; Ping, Yuan ; Chen, Shaowei
Assuntos: Carbon ; Catalysis ; Catalysts ; Electrocatalysis ; Electrochemistry ; Energy technology ; Evolution ; First principles ; Hydrogen ; Hydrogen evolution reactions ; Hydrogen-based energy ; INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY ; Nanoparticles ; Nanotechnology ; Nanowires ; Nickel ; Platinum ; Ruthenium
É parte de: Nature communications, 2019-02, Vol.10 (1), p.631-631, Article 631
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
National Science Foundation (NSF)
SC0012704; AC02-06CH11357
Descrição: Hydrogen evolution reaction is an important process in electrochemical energy technologies. Herein, ruthenium and nitrogen codoped carbon nanowires are prepared as effective hydrogen evolution catalysts. The catalytic performance is markedly better than that of commercial platinum catalyst, with an overpotential of only -12 mV to reach the current density of 10 mV cm in 1 M KOH and -47 mV in 0.1 M KOH. Comparisons with control experiments suggest that the remarkable activity is mainly ascribed to individual ruthenium atoms embedded within the carbon matrix, with minimal contributions from ruthenium nanoparticles. Consistent results are obtained in first-principles calculations, where RuC N moieties are found to show a much lower hydrogen binding energy than ruthenium nanoparticles, and a lower kinetic barrier for water dissociation than platinum. Among these, RuC N stands out as the most active catalytic center, where both ruthenium and adjacent carbon atoms are the possible active sites.
Editor: England: Nature Publishing Group
Idioma: Inglês

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Ruthenium atomically dispersed in carbon outperforms platinum toward hydrogen evolution in alkaline media

Lu, Bingzhang ; Guo, Lin ; Wu, Feng ; Peng, Yi ; Lu, Jia En ; Smart, Tyler J ; Wang, Nan ; Finfrock, Y Zou ; Morris, David ; Zhang, Peng ; Li, Ning ; Gao, Peng ; Ping, Yuan ; Chen, Shaowei

England: Nature Publishing Group

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