Ruthenium/Graphene-like
Layered Carbon Composite as
an Efficient Hydrogen Evolution Reaction Electrocatalyst
Zhe Chen
Jinfeng Lu
Yuejie Ai
Yongfei Ji
Tadafumi Adschiri
Lijun Wan
10.1021/acsami.6b09331.s001
https://acs.figshare.com/articles/journal_contribution/Ruthenium_Graphene-like_Layered_Carbon_Composite_as_an_Efficient_Hydrogen_Evolution_Reaction_Electrocatalyst/4334375
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 H<sub>2</sub>SO<sub>4</sub> 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.
2016-12-07 00:00:00
Efficient Hydrogen Evolution Reaction Electrocatalyst Efficient water splitting
future energy applications
Tafel slope
3 mV
hydrogen evolution reaction
HER catalyst
load ultrasmall Ru nanoparticles
GLC
transition-metal dichalcogenides
surface properties
energy devices
0.5 M H 2
4 solution
glass carbon electrode
silicate template
Ru nanoparticles