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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルElectrosynthesis of Fuels 3
編集者W. E. Mustain, G. Brisard, J. A. Staser, M. B. Mogensen, M. C. Williams, T. M. Gur, X. D. Zhou
出版社Electrochemical Society Inc.
ページ87-92
ページ数6
3
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2015
イベントSymposium on Electrosynthesis of Fuels 3 - 227th ECS Meeting - Chicago, United States
継続期間: 2015 5月 242015 5月 28

出版物シリーズ

名前ECS Transactions
番号3
66
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

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

ASJC Scopus subject areas

  • 工学(全般)

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