Core/Shell-Structured Carbon Support Boosting Fuel Cell Durability
© 2025 Wiley‐VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 17 vom: 02. Apr., Seite e2414472 |
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| Weitere Verfasser: | , , , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article Pt particles‐coarsening resistance carbon‐corrosion resistance core/shell‐structured carbon support durability proton exchange membrane fuel cells |
| Zusammenfassung: | © 2025 Wiley‐VCH GmbH. To enhance the lifetime of proton exchange membrane fuel cells, developing highly durable platinum-based cathode catalysts is essential. While two degradation pathways for the cathode catalyst-carbon corrosion and electrocatalyst (platinum nanoparticles) coarsening-have been identified, current approaches to enhance its durability are limited to addressing individual degradation pathways. Herein, the study develops a core/shell-structured carbon support that is designed to afford cathode catalysts capable of simultaneously inhibiting carbon corrosion and electrocatalyst coarsening. The core/shell structure is distinguished by its bifunctional nature: the core is made of highly graphitized carbon tailored to build a robust carbon skeleton, and the shell comprises heteroatom-doped amorphous carbon engineered to prevent electrocatalyst coarsening by chemical/physical anchoring of platinum nanoparticles. Thanks to this elaborate design, the catalyst surpasses the durability targets for carbon supports and electrocatalysts set by the U.S. Department of Energy, as supported by the achieved durability metrics after the square-wave/triangle-wave accelerated stress tests: electrochemical surface area loss at 13%/3%, mass activity loss at 27%/17%, and voltage loss of 29 mV (at 0.8 A cm- 2)/4 mV (at 1.5 A cm- 2) |
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| Beschreibung: | Date Revised 29.04.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202414472 |