التفاصيل البيبلوغرافية
| العنوان: |
Hierarchically Porous Fe−N−C Single‐Atom Catalysts via Ionothermal Synthesis for Oxygen Reduction Reaction |
| المؤلفون: |
Kisand, Kaarel, Sarapuu, Ave, Douglin, John C., Kikas, Arvo, Käärik, Maike, Kozlova, Jekaterina, Aruväli, Jaan, Treshchalov, Alexey, Leis, Jaan, Kisand, Vambola, Kukli, Kaupo, Dekel, Dario R., Tammeveski, Kaido |
| المساهمون: |
Eesti Teadusagentuur, Nancy and Stephen Grand Technion Energy Program, Israeli Smart Transportation Research Center |
| المصدر: |
ChemSusChem ; ISSN 1864-5631 1864-564X |
| بيانات النشر: |
Wiley |
| سنة النشر: |
2024 |
| المجموعة: |
Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: |
Platinum group metal (PGM)‐free electrocatalysts have emerged as promising alternatives to replace Pt for the oxygen reduction reaction (ORR) in anion exchange membrane fuel cells (AEMFCs). However, traditional synthesis methods limit the single‐atom site density due to metal agglomeration at higher temperatures. This work explores the preparation of hierarchically porous atomically dispersed electrocatalysts for the ORR. The materials were prepared via ionothermal synthesis, where magnesium nitrate was used to prepare hierarchically porous carbon materials. The in‐situ formed Mg‐N x sites were trans‐metalated to yield ORR‐active Fe‐N x sites. The resulting carbon‐based catalysts displayed excellent electrocatalytic activity, attributed to the atomically dispersed Fe‐N x active sites and high meso‐ and macroporosity that enhanced the mass transport and exposed more accessible active sites. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1002/cssc.202401332 |
| الاتاحة: |
http://dx.doi.org/10.1002/cssc.202401332 |
| Rights: |
http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.D1EE8232 |
| قاعدة البيانات: |
BASE |