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Ruthenium Nanoparticles Anchored on Graphene Hollow Nanospheres Superior to Platinum for the Hydrogen Evolution Reaction in Alkaline Media
journal contribution
posted on 2019-12-16, 05:29 authored by Ji-Sen Li, Meng-Jie Huang, Ling-Xin Kong, Xiao-Nan Chen, Yu-Wei Zhou, Jun-Lei Li, Ming-Yu WangThe design and construction of highly efficient and stable
Pt-free
catalysts for the electrocatalytic hydrogen evolution reaction (HER)
in alkaline media is extremely desirable. Herein, a novel hybrid of
ruthenium (Ru) nanoparticles anchored on graphene hollow nanospheres
(GHSs) is synthesized by a template-assisted strategy. The combination
of ultrafine Ru nanoparticles and hollow spherical support endows
the resultant Ru/GHSs an extraordinary catalytic performance with
a low overpotential of 24.4 mV at a current density of 10 mA cm–2, a small Tafel slope of 34.8 mV dec–1, as well as long-term stability in 1.0 M KOH solution, which is,
to our knowledge, superior to commercial 20% Pt–C catalyst
and most of the state-of-the-art HER electrocatalysts reported. Remarkably,
this work provides a new route for the development of other metal-based
HER electrocatalysts for energy-related applications.
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GHSRuthenium Nanoparticles Anchoredelectrocatalytic hydrogen evolution reactionTafel slopeHER electrocatalystsHydrogen Evolution ReactionGraphene Hollow Nanospheres Superior1.0 M KOH solutionenergy-related applicationsmetal-based HER electrocatalyststemplate-assisted strategyAlkaline Media24.4 mVultrafine Ru nanoparticlesPt-free catalysts
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