Formation of Branched Ruthenium Nanoparticles for Improved Electrocatalysis of Oxygen Evolution Reaction
| dc.contributor.author | Poerwoprajitno, Agus R. | en |
| dc.contributor.author | Gloag, Lucy | en |
| dc.contributor.author | Benedetti, Tania M. | en |
| dc.contributor.author | Cheong, Soshan | en |
| dc.contributor.author | Watt, John | en |
| dc.contributor.author | Huber, Dale L. | en |
| dc.contributor.author | Gooding, J. Justin | en |
| dc.contributor.author | Tilley, Richard D. | en |
| dc.date.accessioned | 2026-02-26T15:41:03Z | |
| dc.date.available | 2026-02-26T15:41:03Z | |
| dc.date.issued | 2019-04-26 | en |
| dc.description.abstract | Branched nanoparticles are one of the most promising nanoparticle catalysts as their branch sizes and surfaces can be tuned to enable both high activity and stability. Understanding how the crystallinity and surface facets of branched nanoparticles affect their catalytic performance is vital for further catalyst development. In this work, a synthesis is developed to form highly branched ruthenium (Ru) nanoparticles with control of crystallinity. It is shown that faceted Ru branched nanoparticles have improved stability and activity in the oxygen evolution reaction (OER) compared with polycrystalline Ru nanoparticles. This work achieves a low 180 mV overpotential at 10 mA cm −2 for hours, demonstrating that record-high stability for Ru nanocrystals can be achieved while retaining high activity for OER. The superior electrocatalytic performance of faceted Ru branched nanoparticles is ascribed to the lower Ru dissolution rate under OER conditions due to low-index facets on the branch surfaces. | en |
| dc.description.sponsorship | A.R.P., J.J.G., and R.D.T. gratefully acknowledge the University of New South Wales for the research funding. A.R.P. is currently a Ph.D. candidate at School of Chemistry and is supported by an Australian Government Research Training Program Scholarship and the UNSW Scientia PhD Scholarship Scheme. L.G., J.J.G., and R.D.T acknowledge funding under the Australian Research Council Linkage grant (LP150101014). Support from the Australian Research Council through the award of an Australian Laureate Fellowship (FT150100060) for J.J.G and a Discovery Project (DP190102659) for R.D.T. are acknowledged. This research used the facilities supported by Microscopy Australia (formerly AMMRF) at the Electron Microscope Unit at UNSW. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE), Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA-0003525. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. | en |
| dc.description.status | Peer-reviewed | en |
| dc.format.extent | 6 | en |
| dc.identifier.issn | 1613-6810 | en |
| dc.identifier.other | PubMed:30913370 | en |
| dc.identifier.other | ORCID:/0000-0001-7548-1521/work/206440553 | en |
| dc.identifier.scopus | 85063420976 | en |
| dc.identifier.uri | https://hdl.handle.net/1885/733806639 | |
| dc.language.iso | en | en |
| dc.rights | ©2019 The authors | en |
| dc.source | Small | en |
| dc.subject | crystallinity | en |
| dc.subject | electrocatalysis | en |
| dc.subject | nanoparticles | en |
| dc.subject | oxygen evolution reaction | en |
| dc.subject | ruthenium | en |
| dc.title | Formation of Branched Ruthenium Nanoparticles for Improved Electrocatalysis of Oxygen Evolution Reaction | en |
| dc.type | Journal article | en |
| dspace.entity.type | Publication | en |
| local.contributor.affiliation | Poerwoprajitno, Agus R.; University of New South Wales | en |
| local.contributor.affiliation | Gloag, Lucy; Research School of Chemistry, ANU College of Science and Medicine, The Australian National University | en |
| local.contributor.affiliation | Benedetti, Tania M.; University of New South Wales | en |
| local.contributor.affiliation | Cheong, Soshan; University of New South Wales | en |
| local.contributor.affiliation | Watt, John; Sandia National Laboratories | en |
| local.contributor.affiliation | Huber, Dale L.; Sandia National Laboratories | en |
| local.contributor.affiliation | Gooding, J. Justin; University of New South Wales | en |
| local.contributor.affiliation | Tilley, Richard D.; University of New South Wales | en |
| local.identifier.citationvolume | 15 | en |
| local.identifier.doi | 10.1002/smll.201804577 | en |
| local.identifier.pure | 239f3ab5-9dea-4bbd-bb9d-a410a51edf95 | en |
| local.identifier.url | https://www.scopus.com/pages/publications/85063420976 | en |
| local.type.status | Published | en |