Journal article
Facile preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction
Physical chemistry chemical physics : PCCP, Vol.14(10), pp.3381-3387
2012
Handle:
https://hdl.handle.net/2376/110825
PMID: 22307527
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.
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Details
- Title
- Facile preparation of nitrogen-doped graphene as a metal-free catalyst for oxygen reduction reaction
- Creators
- ZIYIN LIN - School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United StatesMin-Kyu SONG - School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United StatesYONG DING - School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United StatesYAN LIU - School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United StatesMEILIN LIU - School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United StatesChing-Ping WONG - Georgia Institute of Technology
- Publication Details
- Physical chemistry chemical physics : PCCP, Vol.14(10), pp.3381-3387
- Academic Unit
- School of Mechanical and Materials Engineering
- Publisher
- Royal Society of Chemistry; Cambridge
- Identifiers
- 99900547131201842
- Language
- English
- Resource Type
- Journal article