Nitrogen-doped hierarchical mesoporous/macroporous carbon (H-C) prepared from the combined silica templates with different size for oxygen reduction

Mingjie Wu, Jingjing Shi, Qiang Wang, Jinli Qiao, Yuyu Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this work, by combining a simple two-step graphitization of the impregnated carbon, we have synthesized novel nitrogen-doped hierarchical mesoporous/macroporous carbon (H-C) with high efficient catalytic activity for ORR by mixing two or more kinds of particle size controlled silica template agent. Results of electrochemical characterization, which was performed using cyclic voltammetry (CV) and linear sweep voltammetry (LSV) employing a rotating disk electrode (RDE), with emphasis on the activity of the catalyst are presented. The catalytic activity was found to depend strongly on the porous structure. The resulting H-C obtained from the binary nanosilica template (15nm/500nm = 9:1 in mass) exhibits the highest catalytic performance in terms of ORR among the catalysts studied, where the onset potential at 0.2V, half-wave potential at 0.03V and average transferred electron number at 3.50, were achieved in alkaline media.

Original languageEnglish
Title of host publicationElectrosynthesis of Fuels 3
EditorsW. E. Mustain, G. Brisard, J. A. Staser, M. B. Mogensen, M. C. Williams, T. M. Gur, X. D. Zhou
PublisherElectrochemical Society Inc.
Pages79-86
Number of pages8
Edition3
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2015 Jan 1
EventSymposium on Electrosynthesis of Fuels 3 - 227th ECS Meeting - Chicago, United States
Duration: 2015 May 242015 May 28

Publication series

NameECS Transactions
Number3
Volume66
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Electrosynthesis of Fuels 3 - 227th ECS Meeting
CountryUnited States
CityChicago
Period15/5/2415/5/28

ASJC Scopus subject areas

  • Engineering(all)

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