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Issue 10, 2012
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Facile preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction

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Abstract

Nitrogen-doped graphene (nG) is a promising metal-free catalyst for oxygen reduction reaction (ORR) on the cathode of fuel cells. Here we report a facile preparation of nGviapyrolysis of graphene oxide with melamine. The morphology of the nG is revealed using scanning electron microscopy and transmission electron microscopy while the successful N doping is confirmed by electron energy loss spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. The resulting nG shows high electrocatalytic activity toward ORR in an alkaline solution with an onset potential of −0.10 V vs.Ag/AgCl reference electrode. The nG catalyzed oxygen reduction exhibits a favorable formation of watervia a four-electron pathway. Good stability and anti-crossover property are also observed, which are advantageous over the Pt/C catalyst. Furthermore, the effect of pyrolysis temperature on the structure and activity of nG is systematically studied to gain some insights into the chemical reactions during pyrolysis.

Graphical abstract: Facile preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction

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Publication details

The article was received on 05 Jan 2012, accepted on 17 Jan 2012 and first published on 17 Jan 2012


Article type: Paper
DOI: 10.1039/C2CP00032F
Citation: Phys. Chem. Chem. Phys., 2012,14, 3381-3387
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    Facile preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction

    Z. Lin, M. Song, Y. Ding, Y. Liu, M. Liu and C. Wong, Phys. Chem. Chem. Phys., 2012, 14, 3381
    DOI: 10.1039/C2CP00032F

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