3D Nanowire Pt Catalysts with Enhanced Stability for the Oxygen Reduction Reaction
We report that self-supporting mesoporous platinum 3D nanowires with a single diamond (SD) morphology and a high specific surface area of 40.4 m<sup>2</sup> g<sup>-1</sup> demonstrated enhanced stability toward the oxygen reduction reaction (ORR). These were found to be superior to commercially available carbon-supported Pt nanoparticles (Pt/C). After 1000 potential cycles, there was a 21% loss in surface area for SD-Pt, as compared with a 40.3% loss for Pt/C with no reduction in their half-wave potential (measured at <i>J</i> = 3.0 mA cm<sup>-2</sup>), whereas the Pt/C catalyst showed a 11.9 mV decrease. Our findings revealed that our SD-Pt thin films also exhibited excellent ORR activity, which offers significant potential for their application as high-performance cathode materials in alkaline fuel cells.
Authors
- Diego Alba-Venero
- Samuel C. Perry (ORCID: https://orcid.org/0000-0002-6263-6114)
- Samina Akbar (ORCID: https://orcid.org/0000-0002-9456-3861)
- Adam M. Squires (ORCID: https://orcid.org/0000-0003-1396-467X)
- Iris S. Nandhakumar (ORCID: https://orcid.org/0000-0002-9668-9126)
- Nicholas J. Terrill (ORCID: https://orcid.org/0000-0002-8783-1282)
- Wanli Liu (ORCID: https://orcid.org/0000-0003-1603-3184)
- Joshua S. White (ORCID: https://orcid.org/0000-0001-9307-3177)
Institutions
- Rutherford Appleton Laboratory (GB)
- Diamond Light Source (GB)
- University of Southampton (GB)
- ISIS Neutron and Muon Source
- University of Bath (GB)
Publication Details
- Journal
- ACS Omega
- Published
- 2025-02-21
- DOI
- https://doi.org/10.1021/acsomega.4c06385
- Citations
- 3
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.09
Funders
- Engineering and Physical Sciences Research Council