The performance of doped mesoporous carbon electrodes as electrochemical capacitors in optimized alkaline electrolyte

Wenzhao Chen, Jiadong Li, Nengneng Xu, Qiang Wang, Yuyu Liu, Jinli Qiao

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

Abstract

Nitrogen and sulfur dual-doped mesoporous carbons were prepared through a facile template-mediated pyrolyzing method using poly(ethyleneimine) (PEI) as sources of nitrogen (N) and carbon (C), ferrous sulfate (FeSO4 7H2O) as both precursor of sulfur (S) and activation reagent along with nanoscaled silica as sacrificial supports. The as-prepared doped mesoporous carbons show perfect supercapacitive performances, which have been demonstrated by cyclic voltammetry and constant-current charge/discharge cycling techniques. The specific capacitance (SC) of the as-prepared electrode can reach 279 F/g at a current density of 1 A/g. Even at a high rate capability of 100 A/g, the electrode still shows the SC value as high as 240 F/g, retaining 86% of that at 1 A/g. Regarding the effect of electrolyte concentrations (1-6M KOH), 3 M KOH gives the best performance. The above results indicate that the doped mesoporous carbon electrodes developed in this work are promising for use in energy storage devices.

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.
Pages87-92
Number of pages6
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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  • Cite this

    Chen, W., Li, J., Xu, N., Wang, Q., Liu, Y., & Qiao, J. (2015). The performance of doped mesoporous carbon electrodes as electrochemical capacitors in optimized alkaline electrolyte. In W. E. Mustain, G. Brisard, J. A. Staser, M. B. Mogensen, M. C. Williams, T. M. Gur, & X. D. Zhou (Eds.), Electrosynthesis of Fuels 3 (3 ed., pp. 87-92). (ECS Transactions; Vol. 66, No. 3). Electrochemical Society Inc.. https://doi.org/10.1149/06603.0087ecst