Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
EDLC Performance of Various Activated Carbons in Spiro-Type Quaternary Ammonium Salt Electrolyte Solutions
Yoshihiro NONOMasayuki KOUZUKouichi TAKEIKazumi CHIBAYuichi SATO
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JOURNAL FREE ACCESS

2010 Volume 78 Issue 5 Pages 336-338

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Abstract

In this study, we investigated the electrochemical behavior of various types of activated carbons with different properties, such as the specific surface area and pore size distribution in an electrolyte containing TEA-BF4 and in that containing a spiro-type quaternary ammonium salt (SBP-BF4). EDLC cells using 1 M SBP-BF4/DMC+PC showed higher capacitances for the various activated carbons and good rate capabilities even for an activated carbon with a small pore size distribution compared to EDLC cells using 1 M TEA-BF4/PC. These results may be attributed to the higher mobility of SBP with a smaller cation size and the lower viscosity of 1 M SBP-BF4/DMC+PC due to the addition of DMC.

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© 2010 The Electrochemical Society of Japan
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