@article{Li2023, 
author = {Chun-Yan Li and Rui Zhang and Xiao-Jie Ba and Xiao-Le Jiang and Yao-Yue Yang},
title = {Fe Nanoparticles Encapsulated in N-Doped Porous Carbon for Efficient Oxygen Reduction in Alkaline Media},
year = {2023},
journal = {Journal of Electrochemistry},
volume = {29},
number = {5},
pages = {2210241},
keywords = {Oxygen reduction reaction, Metal-organic frameworks, Porous structures, Fe nanoparticles},
url = {https://www.sciopen.com/article/10.13208/j.electrochem.2210241},
doi = {10.13208/j.electrochem.2210241},
abstract = {Rational design and synthesis of non-precious-metal catalyst plays an important role in improving the activity and stability for oxygen reduction reaction (ORR) but remains a major challenge. In this work, we used a facile approach to synthesize iron nanoparticles encapsulated in nitrogen-doped porous carbon materials (Fe@N-C) from functionalized metal-organic frameworks (MOFs, MET-6). Embedding Fe nanoparticles into the carbon skeleton increases the graphitization degree and the proportion of graphitic N as well as promotes the formation of mesopores in the catalyst. The Fe@N-C-30 catalyst showed the excellent ORR activity in alkaline solutions (E0 = 0.97 V vs. RHE, E1/2 = 0.89 V vs. RHE). Moreover, the Fe@N-C-30 catalyst exhibited better methanol resistance and long-term stability when compared to commercial Pt/C. The superior ORR performance could be attributed to the combination of high electrochemical surface area, relative high portion of graphitic-N, unique porous structures and the synergistic effect between the encapsulated Fe particles and the N-doped carbon layer. This work provides a promising method to construct efficient non-precious-metal ORR catalyst through MOFs.}
}