Work

Formation of open ruthenium branched structures with highly exposed active sites for oxygen evolution reaction electrocatalysis

Year: 2025

Type: article

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.

Source: Chemical Science

DOI: 10.1039/d5sc01861g

Authors: Sa Xiao, Yuhan Xie, Agus R. Poerwoprajitno, Lucy Gloag, Qinyu Li, Soshan Cheong, Zeno R. Ramadhan, Ingemar Persson, Yoshiki Soda, Dale L. Huber, Liming Dai, J. Justin Gooding, Richard D. Tilley

Institutions: UNSW Sydney, Sandia National Laboratories, Center for Integrated Nanotechnologies, Australian National University, Mark Wainwright Analytical Centre

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

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, Australian Research Council, Sandia National Laboratories

Awards: G11630931, G280414146, Unveiling Nanoparticle Homogeneity: One Particle at a Time, G288067973, G413247060, ARC Centre of Excellence for Carbon Science and Innovation, G5964803810, G6071807543, Understanding how nanoconfinement can enhance electrochemical reactions, Metal-on-Metal Single Atom Catalysts, G855168022

OpenAlex ID: W4409468389

FWCI: 0.426

Cites: 34

Cited by: 3

Related to: 10