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Issue 5, 2015
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Oxygen reduction reaction on neighboring Fe–N4 and quaternary-N sites of pyrolized Fe/N/C catalyst

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Abstract

We study the interaction between the TM–Nx and metal-free active sites of a pyrolized TM/N/C catalyst and its effect on their ORR activities. We particularly choose a Fe–N4–edge-graphene and a quaternary-N-doped zigzag edge as representatives of TM–Nx and the metal-free active sites, respectively. We find that the interaction of the Fe–N4 and quaternary-N-doped sites at the zigzag edge of graphene enhances the ORR free energy profile at the quaternary-N-doped site. However, the ORR free energy profile at the Fe–N4 site is not affected by this interaction.

Graphical abstract: Oxygen reduction reaction on neighboring Fe–N4 and quaternary-N sites of pyrolized Fe/N/C catalyst

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Publication details

The article was received on 21 Oct 2014, accepted on 03 Dec 2014 and first published on 03 Dec 2014


Article type: Paper
DOI: 10.1039/C4CP04811C
Citation: Phys. Chem. Chem. Phys., 2015,17, 3059-3071
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    Oxygen reduction reaction on neighboring Fe–N4 and quaternary-N sites of pyrolized Fe/N/C catalyst

    A. G. Saputro and H. Kasai, Phys. Chem. Chem. Phys., 2015, 17, 3059
    DOI: 10.1039/C4CP04811C

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