Porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles for efficient oxygen reduction
Document Type
Article
Publication Date
9-13-2018
Department
Department of Materials Science and Engineering
Abstract
The rational construction of a carbon base with a porous structure and incorporating effective dopants is an intriguing and challenging strategy used to develop advanced electrocatalysts for the oxygen reduction reaction (ORR). Herein, we synthesize a novel, efficient electrocatalyst comprised of three-dimensional (3D) porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles (Fe3O4/FeNSG). We use a melamine formaldehyde resin which plays the dual-functional roles of a soft template and a nitrogen-abundant source. The rational design of the Fe3O4/FeNSG-3 with its 3D porous architecture, abundant active sites (Fe–N–C, Fe3O4, pyridinic N, C–S–C, et al.), and large surface area (530.5 m2 g−1) makes it an efficient electrocatalyst towards ORR. The Fe3O4/FeNSG-3 catalyst shows a positive ORR onset potential (0.951 V) and half-wave potential (0.810 V), comparable to those of the commercial Pt/C electrocatalyst in alkaline media. Furthermore, the catalyst exhibits a four-electron transfer pathway, superior methanol tolerance and good stability. This work paves the way for preparing low-cost, active, stable, non-Pt group metal catalysts through regulating the active catalytic sites on 3D graphene with a porous architecture.
Publication Title
Catalysis Science & Technology
Recommended Citation
Li, Y.,
Zhou, Y.,
Zhu, C.,
Hu, Y. H.,
Gao, S.,
Liu, Q.,
&
et. al.
(2018).
Porous graphene doped with Fe/N/S and incorporating Fe3O4 nanoparticles for efficient oxygen reduction.
Catalysis Science & Technology,
8, 5325-5333.
http://doi.org/10.1039/C8CY01328D
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/242
Publisher's Statement
Publisher's version of record: https://doi.org/10.1039/C8CY01328D