Three-Dimensional Branched and Faceted Gold-Ruthenium Nanoparticles: Using Nanostructure to Improve Stability in Oxygen Evolution Electrocatalysis - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Angewandte Chemie International Edition Year : 2018

Three-Dimensional Branched and Faceted Gold-Ruthenium Nanoparticles: Using Nanostructure to Improve Stability in Oxygen Evolution Electrocatalysis

Abstract

Achieving stability with highly active Ru nanoparticles for electrocatalysis is a major challenge for the oxygen evolution reaction. As improved stability of Ru catalysts has been shown for bulk surfaces with low‐index facets, there is an opportunity to incorporate these stable facets into Ru nanoparticles. Now, a new solution synthesis is presented in which hexagonal close‐packed structured Ru is grown on Au to form nanoparticles with 3D branches. Exposing low‐index facets on these 3D branches creates stable reaction kinetics to achieve high activity and the highest stability observed for Ru nanoparticle oxygen evolution reaction catalysts. These design principles provide a synthetic strategy to achieve stable and active electrocatalysts.
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Dates and versions

hal-02000451 , version 1 (30-01-2019)

Identifiers

  • HAL Id : hal-02000451 , version 1

Cite

Lucy Gloag, Tania Benedetti, Soshan Cheong, Yibing Li, Xuan-Hao Chan, et al.. Three-Dimensional Branched and Faceted Gold-Ruthenium Nanoparticles: Using Nanostructure to Improve Stability in Oxygen Evolution Electrocatalysis. Angewandte Chemie International Edition, 2018, 57 (32), pp.10241-10245. ⟨hal-02000451⟩
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