Journal
ELECTROCHIMICA ACTA
Volume 108, Issue -, Pages 10-16Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.06.066
Keywords
Nitrogen-doped ordered mesoporous; carbons; Oxygen reduction reaction; Electrocatalyst; Honey precursor
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Funding
- National Natural Science Foundation of China [21075014]
- Fundamental Research Funds for the Central Universities [11SSXT144]
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In this work, nitrogen-doped ordered mesoporous carbons (N-OMCs) were synthesized by a low cost and simple nanocasting method using SBA-15 as a template and honey as a nitrogen and carbon sources. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen adsorption-desorption, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) showed that nitrogen was successfully doped into the framework of ordered mesoporous carbon rods. The N-OMCs with high surface area and ordered structure were used as a metal-free catalyst for oxygen reduction reaction (ORR), which exhibited much better electrocatalytic activity, long-term operation stability and high CH3OH tolerance compared to commercial Pt/C catalysts for ORR in alkaline fuel cell. Moreover, the influence of different amounts of nitrogen formed at different carbonization temperatures in N-OMCs on the ORR activity was researched. Honey as a nitrogen and carbon sources may be applied to various carbon materials for the development of other metal-free efficient materials for applications beyond fuel cells. (C) 2013 Elsevier Ltd. All rights reserved.
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