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Ruthenium/Graphene-like Layered Carbon Composite as an Efficient Hydrogen Evolution Reaction Electrocatalyst
journal contribution
posted on 2016-12-07, 00:00 authored by Zhe Chen, Jinfeng Lu, Yuejie Ai, Yongfei Ji, Tadafumi Adschiri, Lijun WanEfficient 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.
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Efficient Hydrogen Evolution Reaction Electrocatalyst Efficient water splittingfuture energy applicationsTafel slope3 mVhydrogen evolution reactionHER catalystload ultrasmall Ru nanoparticlesGLCtransition-metal dichalcogenidessurface propertiesenergy devices0.5 M H 24 solutionglass carbon electrodesilicate templateRu nanoparticles
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