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Updated: Jul 30, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Single-atomic Fe sites decorated N-doped carbon toward oxygen reduction in MFCs
Cuie Zhao1, Wei Luo1, Haoran Tian1
1Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China. iamlshi@njupt.edu.cn.
Abstract:
An atomically dispersed Fe-N-C catalyst has been synthesized and enables high power-out performance in microbial fuel cells (MFCs). The influence of Fe doping on the electronic properties of N-doped carbon was investigated, proving that single-atomic Fe sites embedded into N-doped carbon play a significant role in enhancing oxygen reduction reaction (ORR) performance in challenging neutral electrolyte. Density functional theory (DFT) studies indicate that a lower energy barrier for the limiting-potential step (*OH desorption) on Fe-N4 sites is favorable for the ORR process. This work offers new insights into the nature of Fe-N4 sites for the construction of highly active electrocatalysts for use in diverse energy conversion applications.
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