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

Lucy Gloag, Tania M. Benedetti, Soshan Cheong, Yibing Li, Xuan Hao Chan, Lise Marie Lacroix, Shery L.Y. Chang, Raul Arenal, Ileana Florea, Hector Barron, Amanda S. Barnard, Anna M. Henning, Chuan Zhao, Wolfgang Schuhmann, J. Justin Gooding, Richard D. Tilley*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)10241-10245
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number32
DOIs
Publication statusPublished - 2018
Externally publishedYes

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