Ordered Pt<sub>3</sub>Co Nanoparticles as Electrocatalyst for the Oxygen Reduction Reaction
The facile and efficient fabrication of small-sized Pt-based intermetallic catalysts represents a critical requirement for fuel cells but remains challenging. Herein, we report an external space confinement annealing strategy to synthesize a small-sized Pt3Co intermetallic catalyst. This method inhibits nanoparticle migration and sintering by creating a low-flow microenvironment. X-ray diffraction and high-resolution transmission electron microscopy confirm the formation of a well-defined L12 ordered phase. X-ray photoelectron spectroscopy reveals stronger electron interactions and a reduced d-band for Pt3Co/C, which delivers 0.46 A mg–1 mass activity and retains 73.89% activity postdurability test.
Authors
- Kezhu Jiang (ORCID: https://orcid.org/0000-0001-8554-9091)
- Meiqi Li (ORCID: https://orcid.org/0000-0003-3586-176X)
- Shijian Zheng (ORCID: https://orcid.org/0000-0003-4949-0015)
- Shan Zhu (ORCID: https://orcid.org/0000-0001-6803-1338)
- Zhen Xu (ORCID: https://orcid.org/0000-0003-1652-5496)
- Pei Zhang (ORCID: https://orcid.org/0000-0002-5442-2781)
- Feng Liu
- Xing Hu (ORCID: https://orcid.org/0000-0002-4590-3671)
- Xiaojie Jiang
- Jian Liu
Institutions
- Hebei University of Technology (CN)
- Interface (United States) (US)
- Kunming Institute of Precious Metals (CN)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2025-10-08
- DOI
- https://doi.org/10.1021/acsanm.5c03766
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00