Issue 4, 2017

A facile strategy to fabricate nitrogen-doped graphene aerogel-supported Fe3N nanoparticles as efficient electrocatalysts for the oxygen reduction reaction

Abstract

In this study, a novel hybrid composed of iron nitride and nitrogen-functionalized graphene aerogel (Fe3N/N-GA) was fabricated and used as an electrode material for the oxygen reduction reaction (ORR). The Fe3N/N-GA obtained at the pyrolysis temperature of 900 °C, denoted as Fe3N/N-GA-900, exhibits outstanding catalytic activity towards the ORR compared to other Fe3N/N-GA hybrids, which may be due to the highest absolute content of Fe–N and graphitic-N species in the Fe3N/N-GA-900. Remarkably, the fabricated Fe3N/N-GA-900 hybrid is comparable to the benchmark Pt/C catalyst in terms of the onset potential and half-wave potential, but it possesses a larger kinetic energy, which limits the current density, and better methanol tolerance and operational stability than those of the commercial Pt/C catalyst for the ORR in an alkaline medium. Therefore, it holds great promise as a replacement for the Pt/C catalyst in alkaline direct methanol fuel cells (DMFCs).

Graphical abstract: A facile strategy to fabricate nitrogen-doped graphene aerogel-supported Fe3N nanoparticles as efficient electrocatalysts for the oxygen reduction reaction

Supplementary files

Article information

Article type
Paper
Submitted
27 Aug 2016
Accepted
12 Jan 2017
First published
13 Jan 2017

New J. Chem., 2017,41, 1755-1764

A facile strategy to fabricate nitrogen-doped graphene aerogel-supported Fe3N nanoparticles as efficient electrocatalysts for the oxygen reduction reaction

S. Wang, D. Yu and X. He, New J. Chem., 2017, 41, 1755 DOI: 10.1039/C6NJ02679F

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