Article Effect of P doped bimetallic FeCo catalysts on carbon matrix for oxygen reduction in alkaline media

Yuqi Ma (Department of Materials Science and Engineering, Seoul National University) ; Hyo-Jin Ahn (Department of Materials Science and Engineering, Seoul National University)

Effect of P doped bimetallic FeCo catalysts on carbon matrix for oxygen reduction in alkaline media.pdf
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Yuqi Ma, Hyo-Jin Ahn. Effect of P doped bimetallic FeCo catalysts on carbon matrix for oxygen reduction in alkaline media. Science and Techonology of Advanced Materials. 2025, 26 (1), 2459051. https://doi.org/10.48505/nims.5329

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(abstract)

Catalysts' redox reactions are crucial for storage and energy conversion.
Therefore, the fabrication of cost-effective, structurally rational, and
multifunctional advanced catalytic materials continues to be a crucial task. In this
study, we obtained P, Fe, and Co co-doped, nitrogen-rich carbon nanofibers by
directly forming carbon nanotubes from metal-organic frameworks through
electrospinning and pyrolysis. The P0.025-FeCo/C catalyst demonstrated
outstanding ORR activity, including an ECSA of 1954.3 cm², a limited current
density of -3.98 mA/cm2, an E1/2 of ~ 0.84 V, and an Eonset of ~ 0.94 V. After
5000 cycles, the P0.025-FeCo/C catalyst demonstrated remarkable enduring
stability. These function enhancements occurred because of the electronic
coupling between the metal and phosphorus, which altered the electron
distribution at the metal center and optimized its electronic structure, thereby
improving catalytic activity and stability. It exhibits good chemical stability in
alkaline media and can maintain its catalytic performance for a long time,
demonstrating good durability. Its tubular structure provides many active sites
and superior electron transport paths owing to its unique channels and cavities,
which help improve its activity and stability. Therefore, P0.025-FeCo/C is expected
to become a non-precious metal catalyst for facilitating oxygen reduction
reactions.

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Keyword: Metal-organic framework, Oxygen reduction reactions, P doping, Transition metal phosphides, Carbon nanotubes

Date published: 2025-12-31

Publisher: Taylor&Francis

Journal:

  • Science and Techonology of Advanced Materials (ISSN: 14686996) vol. 26 issue. 1 2459051

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5329

First published URL: https://doi.org/10.1080/14686996.2025.2459051

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Updated at: 2025-02-23 22:47:45 +0900

Published on MDR: 2025-02-23 22:47:45 +0900

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