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Updated: May 10, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Formation of open ruthenium branched structures with highly exposed active sites for oxygen evolution reaction
Sa Xiao1, Yuhan Xie1, Agus R Poerwoprajitno2
1School of Chemistry, The University of New South Wales Sydney NSW 2052 Australia justin.gooding@unsw.edu.au r.tilley@unsw.edu.au.
Abstract:
The formation of exposed active sites that have high activity and stability for oxygen evolution reaction (OER) catalysis is a significant opportunity for improving water electrolysers. Low-index facets surface Ru can achieve both high activity and stability for OER. Here, we present a new catalyst design where low-index faceted Ru branches are grown off the corners of Pt nanocubes, forming open Ru branched nanoparticles. This open branched structure, exposing low-index facets on its length-tunable branch, enables a high electrochemically active surface area (ECSA), achieving high activity and stability for OER. This design strategy and synthetic control provide a principle for achieving high-performance OER nanocatalysts.
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