Abstract
The physicochemical (e.g., density, viscosity, ionic conductivity, and self-diffusion coefficient) and electrochemical (e.g., electrochemical window and electric double-layer capacitor performance) properties of two new types of room-temperature ionic liquids, 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (EMIm-FAP) and 1-ethyl-3- methylimidazolium tetracyanoborate (EMIm-TCB), were investigated and compared. EMIm-FAP showed a wider electrochemical window with a carbon working electrode compared with EMIm-TCB, in spite of lower viscosity, larger self-diffusion coefficients and higher ionic conductivity. Also, the electric double-layer capacitor using EMIm-FAP shows better cycle reversibility and higher charge/discharge voltage operation (over 3 V) than that using EMIm-TCB.
| Original language | English |
|---|---|
| Journal | Journal of the Electrochemical Society |
| Volume | 159 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electrochemistry
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Surfaces, Coatings and Films
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
Cite this
Physicochemical and Electrochemical Properties of 1-Ethyl-3- Methylimidazolium Tris(pentafluoroethyl)trifluorophosphate and 1-Ethyl-3-Methylimidazolium Tetracyanoborate. / Seki, Shiro; Serizawa, Nobuyuki; Hayamizu, Kikuko; Tsuzuki, Seiji; Umebayashi, Yasuhiro; Takei, Katsuhito; Miyashiro, Hajime.
In: Journal of the Electrochemical Society, Vol. 159, No. 7, 2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Physicochemical and Electrochemical Properties of 1-Ethyl-3- Methylimidazolium Tris(pentafluoroethyl)trifluorophosphate and 1-Ethyl-3-Methylimidazolium Tetracyanoborate
AU - Seki, Shiro
AU - Serizawa, Nobuyuki
AU - Hayamizu, Kikuko
AU - Tsuzuki, Seiji
AU - Umebayashi, Yasuhiro
AU - Takei, Katsuhito
AU - Miyashiro, Hajime
PY - 2012
Y1 - 2012
N2 - The physicochemical (e.g., density, viscosity, ionic conductivity, and self-diffusion coefficient) and electrochemical (e.g., electrochemical window and electric double-layer capacitor performance) properties of two new types of room-temperature ionic liquids, 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (EMIm-FAP) and 1-ethyl-3- methylimidazolium tetracyanoborate (EMIm-TCB), were investigated and compared. EMIm-FAP showed a wider electrochemical window with a carbon working electrode compared with EMIm-TCB, in spite of lower viscosity, larger self-diffusion coefficients and higher ionic conductivity. Also, the electric double-layer capacitor using EMIm-FAP shows better cycle reversibility and higher charge/discharge voltage operation (over 3 V) than that using EMIm-TCB.
AB - The physicochemical (e.g., density, viscosity, ionic conductivity, and self-diffusion coefficient) and electrochemical (e.g., electrochemical window and electric double-layer capacitor performance) properties of two new types of room-temperature ionic liquids, 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate (EMIm-FAP) and 1-ethyl-3- methylimidazolium tetracyanoborate (EMIm-TCB), were investigated and compared. EMIm-FAP showed a wider electrochemical window with a carbon working electrode compared with EMIm-TCB, in spite of lower viscosity, larger self-diffusion coefficients and higher ionic conductivity. Also, the electric double-layer capacitor using EMIm-FAP shows better cycle reversibility and higher charge/discharge voltage operation (over 3 V) than that using EMIm-TCB.
UR - http://www.scopus.com/inward/record.url?scp=84878238855&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878238855&partnerID=8YFLogxK
U2 - 10.1149/2.032207jes
DO - 10.1149/2.032207jes
M3 - Article
AN - SCOPUS:84878238855
VL - 159
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 7
ER -