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  The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons

Pašti, I. A., Gavrilov, N. M., Dobrota, A. S., Momčilović, M. Z., Stojmenović, M. D., Topalov, A. A., et al. (2015). The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons. Electrocatalysis, 6(6), 498-511. doi:10.1007/s12678-015-0271-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-552A-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-553B-8
Genre: Journal Article

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 Creators:
Pašti, Igor A.1, Author              
Gavrilov, Nemanja M.1, Author              
Dobrota, Ana S.1, Author              
Momčilović, Milan Z.2, Author              
Stojmenović, Marija D.2, Author              
Topalov, Angel Angelov3, Author              
Stanković, Dalibor M.4, Author              
Babić, Biljana M.2, Author              
Ćirić-Marjanović, Gordana N.1, Author              
Mentus, Slavko V.1, 5, Author              
Affiliations:
1University of Belgrade, Studentski trg 12-16, Belgrade, Serbia, ou_persistent22              
2Institute of Nuclear Sciences “Vinča”, University of Belgrade, P. O. Box 522, Belgrade, Serbia, ou_persistent22              
3Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
4Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia, ou_persistent22              
5Serbian Academy of Sciences and Arts, Knez Mihajlova 35, Belgrade, Serbia, ou_persistent22              

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Free keywords: Fuel cell catalysis; Heteroatom doping; Ordered mesoporous carbon; Oxygen reduction reaction
 Abstract: In order to elucidate the role of B, N, and P dopants in carbon materials on the kinetics of oxygen reduction reaction (ORR) and to provide a fair comparison of the effects of each dopant, a series of ordered mesoporous carbons (OMCs) with low concentration of heteroatoms (< 1 at%) has been prepared. Doped OMCs were characterized using X-ray photoelectron spectroscopy (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), Raman spectroscopy, X-ray powder diffraction (XRD), and N-2 physisorption measurements. Comparative study of the ORR activity of these materials in alkaline solution was performed using rotating disk electrode voltammetry. The experiments evidenced that, compared to non-doped OMC, charge transfer kinetics was improved independently on the nature of the heteroatom. The decrease of the ORR overvoltage and the increase of the mass activity upon doping are similar for B and P and less prominent for N. On the other hand, OMCs doped with low levels of B and N were found to be selective for O-2 reduction to peroxide, while for P-doped OMCs, the apparent number of electrons consumed per O-2 molecule was up to 3.1. Experimental measurements were complemented by density functional theory (DFT) calculations.

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Language(s): eng - English
 Dates: 2015-11-01
 Publication Status: Published in print
 Pages: 14
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000362903000002
DOI: 10.1007/s12678-015-0271-0
 Degree: -

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Title: Electrocatalysis
Source Genre: Journal
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Publ. Info: New York : Springer
Pages: - Volume / Issue: 6 (6) Sequence Number: - Start / End Page: 498 - 511 Identifier: ISSN: 1868-5994
CoNE: /journals/resource/1868-5994