Formation of open ruthenium branched structures with highly exposed active sites for oxygen evolution reaction electrocatalysis
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.
Authors
- Dale L. Huber (ORCID: https://orcid.org/0000-0001-6872-8469)
- Soshan Cheong (ORCID: https://orcid.org/0000-0001-6133-0829)
- Agus R. Poerwoprajitno (ORCID: https://orcid.org/0000-0002-1932-8669)
- Lucy Gloag (ORCID: https://orcid.org/0000-0001-7548-1521)
- Liming Dai (ORCID: https://orcid.org/0000-0001-7536-160X)
- Yoshiki Soda (ORCID: https://orcid.org/0000-0003-2288-4778)
- Yuhan Xie (ORCID: https://orcid.org/0009-0004-4842-9970)
- J. Justin Gooding (ORCID: https://orcid.org/0000-0002-5398-0597)
- Sa Xiao (ORCID: https://orcid.org/0000-0002-9475-6065)
- Richard David Tilley (ORCID: https://orcid.org/0000-0003-2097-063X)
- Zeno Rizqi Ramadhan (ORCID: https://orcid.org/0000-0001-7042-8780)
- Qinyu Li (ORCID: https://orcid.org/0009-0007-4133-222X)
- Ingemar Persson (ORCID: https://orcid.org/0000-0002-2676-4856)
Institutions
- Australian National University (AU)
- UNSW Sydney (AU)
- Sandia National Laboratories (US)
- Center for Integrated Nanotechnologies (US)
Publication Details
- Journal
- Chemical Science
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5sc01861g
- Citations
- 2
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- U.S. Department of Energy
- Australian Government
- Analytical Center for the Government of the Russian Federation
- University of New South Wales
- Office of Science
- National Nuclear Security Administration
- Sandia National Laboratories