Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received July 30, 2025
Revised November 13, 2025
Accepted December 28, 2025
Available online March 25, 2026
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Structural and Electrochemical Optimization of Platinum-Saving Pt-CoNiO/C Catalysts Synthesized Via Green Methods for HighPerformance PEM Fuel Cells
https://doi.org/
Abstract
This study evaluates the eff ectiveness of Pt-CoO/C, Pt-NiO/C, and Pt-CoNiO/C catalysts in PEM fuel cells, highlighting
their interactions and synergistic eff ects on morphology, power density, current density, and electrochemical properties.
The current study focuses on examining the structural and morphological characteristics of the catalysts using analytical
techniques such as TEM, XRD, and SEM-EDX. Pt-CoNiO/C outperforms conventional catalysts by demonstrating
reduced ohmic and mass transport losses attributed to the synergistic eff ects of Pt, Co, and Ni, which favor electron
dispersion and facilitate effi cient charge transfer. Pt-CoNiO/C has an electrochemical surface area (ECSA) of 141 m 2
/g Pt , and its highest current density is 182 mA/cm 2. Its highest power density is 137 mW/cm 2. The performance of the catalyst
improves with temperature, with Pt-CoNiO/C achieving the best rating at 70 °C. The results show that Pt-CoNiO/C can
be used instead of Pt/C catalysts because it uses less platinum and still works well in PEM fuel cell applications.
