التفاصيل البيبلوغرافية
| العنوان: |
Precisely Designed Morphology and Surface Chemical Structure of Fe-N-C Electrocatalysts for Enhanced Oxygen Reaction Reduction Activity |
| المؤلفون: |
Zirun Chen, Yuang Xiong, Yanling Liu, Zhanghongyuan Wang, Binbin Zhang, Xingtang Liang, Xia Chen, Yanzhen Yin |
| المصدر: |
Molecules, Vol 29, Iss 16, p 3785 (2024) |
| بيانات النشر: |
MDPI AG, 2024. |
| سنة النشر: |
2024 |
| المجموعة: |
LCC:Organic chemistry |
| مصطلحات موضوعية: |
tunable morphology, tailored surface chemical structure, Fe-N-C electrocatalysts, ORR, Organic chemistry, QD241-441 |
| الوصف: |
Fe-N-C materials have been regarded as one of the potential candidates to replace traditional noble-metal-based electrocatalysts for the oxygen reduction reaction (ORR). It is believed that the structure of carbon support in Fe-N-C materials plays an essential role in highly efficient ORR. However, precisely designing the morphology and surface chemical structure of carbon support remains a challenge. Herein, we present a novel synthetic strategy for the preparation of porous carbon spheres (PCSs) with high specific surface area, well-defined pore structure, tunable morphology and controllable heteroatom doping. The synthesis involves Schiff-based polymerization utilizing octaaminophenyl polyhedral oligomeric silsesquioxane (POSS-NH2) and heteroatom-containing aldehydes, followed by pyrolysis and HF etching. The well-defined pore structure of PCS can provide the confinement field for ferroin and transform into Fe-N-C sites after carbonization. The tunable morphology of PCS can be easily achieved by changing the solvents. The surface chemical structure of PCS can be tailored by utilizing different heteroatom-containing aldehydes. After optimizing the structure of PCS, Fe-N-C loading on N,S-codoped porous carbon sphere (NSPCS-Fe) displays outstanding ORR activity in alkaline solution. This work paves a new path for fabrication of Fe-N-C materials with the desired morphology and well-designed surface chemical structure, demonstrating significant potential for energy-related applications. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1420-3049 |
| Relation: |
https://www.mdpi.com/1420-3049/29/16/3785; https://doaj.org/toc/1420-3049 |
| DOI: |
10.3390/molecules29163785 |
| URL الوصول: |
https://doaj.org/article/40ba4dc476d141ec80fe5212655d0237 |
| رقم الانضمام: |
edsdoj.40ba4dc476d141ec80fe5212655d0237 |
| قاعدة البيانات: |
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