ChemElectroChem
ChemElectroChem
4 years ago

Edge-Abundant Porous Fe3O4 Nanoparticles Docking in Nitrogen-Rich Graphene Aerogel as Efficient and Durable Electrocatalyst for Oxygen Reduction

Edge-Abundant Porous Fe3O4 Nanoparticles Docking in Nitrogen-Rich Graphene Aerogel as Efficient and Durable Electrocatalyst for Oxygen Reduction
Zibin Liang, Hassina Tabassum, Chong Qu, Ruqiang Zou, Bin Qiu, Wei Xia, Song Gao
A novel Fe3O4 nanoparticles/nitrogen-doped graphene aerogel (denoted as Fe3O4@NGA) hybrid material with high porosity was prepared by using iron-based metal-organic frameworks (MOFs), [Fe3O(H2N-BDC)3] (H2N-BDC=2-aminoterephtalic acid), denoted as MIL-88B-NH2, as templates and nitrogen-doped graphene aerogel (NGA) as the substrate. The obtained Fe3O4 nanoparticles demonstrate a rich edge area with abundant exposed active sites and defects, indicating great potential for oxygen adsorption and activation. When used as an electrocatalyst in alkaline solution, the Pt-free Fe3O4@NGA exhibited excellent oxygen reduction reaction (ORR) performance and dramatically enhanced durability and tolerance towards methanol compared to commercial Pt/C catalyst, revealing its great viability and potential in practical application. Living on the edge: Porous Fe3O4 with abundant edges located on nitrogen-doped graphene aerogel (Fe3O4@NGA) is prepared through a metal-organic framework (MOF) route. The Fe3O4@NGA material exhibits excellent electrocatalytic activity and durability towards the oxygen reduction reaction.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/celc.201700627

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