Szczegóły publikacji
Opis bibliograficzny
The role of chalcogen doping in Fe–N–C catalysts for hydrogen-air polymer electrolyte fuel cells: selenium doped Fe–N–C / Sławomir Dyjak, Wojciech Tokarz, Artur BŁACHOWSKI, Mateusz Gratzke, Barbara Szczęśniak, Kamil Sobczak, Wojciech Kiciński // Journal of Power Sources ; ISSN 0378-7753. — 2024 — vol. 609 art. no. 234612, s. 1–14. — Bibliogr. s. 13–14, Abstr. — Publikacja dostępna online od: 2024-05-10
Autorzy (7)
- Dyjak Sławomir
- Tokarz Wojciech
- AGHBłachowski Artur
- Gratzke Mateusz
- Szczęśniak Barbara
- Sobczak Kamil
- Kiciński Wojciech
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 153137 |
|---|---|
| Data dodania do BaDAP | 2024-05-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jpowsour.2024.234612 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Power Sources |
Abstract
A spectrum of selenium-doped Fe–N–C catalysts is prepared and scrutinized for acidic oxygen reduction reactions to understand the impact of the presence and amount of chalcogen dopants on the catalytic performance as cathode catalyst layers (CCLs) for H2–O2 and H2–air polymer electrolyte membrane fuel cells (PEMFCs). While for a high initial content of Se, all available iron is bonded into iron selenides, a low amount of Se doping yields Fe–N–C catalysts of extensive microporosity, increased nitrogen content, and iron occurring predominantly in the Fe-Nx coordination state. The chemistry of the iron-carbon-selenium (Fe–C–Se) system is studied in detail to elucidate the impact of Se on Fe–N–C catalyst formation during pyrolysis. The performance of the Se-doped platinum group metal-free Fe–N–C catalysts in PEMFCs is compared with their commercially available counterpart. The effect of the catalysts' morphology alternation by ball-milling on their performance is also studied. It is concluded that chalcogen doping (either S or Se doping) indirectly impacts Fe–N–C catalyst activity by controlling carbon scaffold properties, while the idea of a direct impact of chalcogen atoms on the Fe-Nx catalytic centers is challenged.
