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Ruthenium/Graphene-like Layered Carbon Composite as an Efficient Hydrogen Evolution Reaction Electrocatalyst
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.ORCID iD: 0000-0001-6994-9802
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2016 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 8, no 51, p. 35132-35137Article in journal (Refereed) Published
Abstract [en]

Efficient water splitting through electrocatalysis has been studied extensively in modern energy devices, while the development of catalysts with activity and stability comparable to those of Pt is still a great challenge. In this work, we successfully developed a facile route to synthesize graphene-like layered carbon (GLC) from a layered silicate template. The obtained GLC has layered structure similar to that of the template and can be used as support to load ultrasmall Ru nanoparticles on it in supercritical water. The specific structure and surface properties of GLC enable Ru nanoparticles to disperse highly uniformly on it even at a large loading amount (62 wt %). When the novel Ru/GLC was used as catalyst on a glass carbon electrode for hydrogen evolution reaction (HER) in a 0.5 M H2SO4 solution, it exhibits an extremely low onset potential of only 3 mV and a small Tafel slope of 46 mV/decade. The outstanding performance proved that Ru/GLC is highly active catalyst for HER, comparable with transition-metal dichalcogenides or selenides. As the price of ruthenium is much lower than platinum, our study shows that Ru/GLC might be a promising candidate as an HER catalyst in future energy applications.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 8, no 51, p. 35132-35137
Keywords [en]
graphene-like, ruthenium, supercritical fluid, electrocatalysis, hydrogen evolution reaction (HER)
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-200757DOI: 10.1021/acsami.6b09331ISI: 000391081700021Scopus ID: 2-s2.0-85008199776OAI: oai:DiVA.org:kth-200757DiVA, id: diva2:1073168
Note

QC 20170209

Available from: 2017-02-09 Created: 2017-02-09 Last updated: 2017-11-29Bibliographically approved

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Ji, Yongfei

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