Electrochemical study of hydrocarbon-derived electrolytes for supercapacitors

Zulkarnain A. Noorden, Satoshi Matsumoto

Research output: Contribution to journalArticle

Abstract

In this paper, we evaluate the essential electrochemical properties-capacitive and resistive behaviors-of hydrocarbon-derived electrolytes for supercapacitor application using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrolytes were systematically prepared from three hydrocarbon-derived compounds, which have different molecular structures and functional groups, by treatment with high-concentration sulfuric acid (H2SO4) at room temperature. Two-electrode cells were assembled by sandwiching an electrolytecontaining glass wool separator with two active electrodes of activated carbon sheets. The dc electrical properties of the tested cells in terms of their capacitive behavior were investigated by CV, and in order to observe the frequency characteristics of the constructed cells, EIS was carried out. Compared with the tested cell with only high-concentration H 2SO4 as the electrolyte, the cell with the derived electrolytes exhibit a capacitance as high as 135 F/g with an improved overall internal resistance of 2.5ω. Through the use of a simple preparation method and lowcost precursors, hydrocarbon-derived electrolytes could potentially find large-scale and higher-rating supercapacitor applications.

Original languageEnglish
Article number10MB16
JournalJapanese Journal of Applied Physics
Volume52
Issue number10 PART2
DOIs
Publication statusPublished - 2013

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electrochemical capacitors
hydrocarbons
Hydrocarbons
Electrolytes
electrolytes
cells
Electrochemical impedance spectroscopy
Cyclic voltammetry
impedance
wool
Electrodes
electrodes
electrochemical cells
ratings
activated carbon
sulfuric acid
separators
Separators
Wool
Electrochemical properties

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Electrochemical study of hydrocarbon-derived electrolytes for supercapacitors. / Noorden, Zulkarnain A.; Matsumoto, Satoshi.

In: Japanese Journal of Applied Physics, Vol. 52, No. 10 PART2, 10MB16, 2013.

Research output: Contribution to journalArticle

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