Abstract
The electrochemical behavior of oxygen (O2)/superoxide ion (O2-) couple was investigated with the aid of the ultramicroelectrode technique in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI) room-temperature molten salt (ionic liquid). The diffusion coefficient of O2 was ( 1.8 ± 0.2) × 106 cm2 s-1 at 25°C. The activation energy of the diffusion process of O2 was estimated to be 27 kJ mol-1 from the temperature dependence of the diffusion coefficient. The solubility of O2 in BMPTFSI was 14 mmol dm-3 at 25°C and decreased with an increase in temperature. The diffusion coefficient of O2- was 0.86 × 10-6 cm2 s-1 at 25°C. The formal potential of O 2/O2- couple was 1.13 V vs ferrocene/ ferrocenium.
| Original language | English |
|---|---|
| Journal | Journal of the Electrochemical Society |
| Volume | 152 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2005 |
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ASJC Scopus subject areas
- Electrochemistry
- Surfaces, Coatings and Films
- Surfaces and Interfaces
Cite this
Electrochemical behavior of oxygen/superoxide ion couple in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide room-temperature molten salt. / Katayama, Yasushi; Sekiguchi, Kaori; Yamagata, Masaki; Miura, Takashi.
In: Journal of the Electrochemical Society, Vol. 152, No. 8, 2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrochemical behavior of oxygen/superoxide ion couple in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide room-temperature molten salt
AU - Katayama, Yasushi
AU - Sekiguchi, Kaori
AU - Yamagata, Masaki
AU - Miura, Takashi
PY - 2005
Y1 - 2005
N2 - The electrochemical behavior of oxygen (O2)/superoxide ion (O2-) couple was investigated with the aid of the ultramicroelectrode technique in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI) room-temperature molten salt (ionic liquid). The diffusion coefficient of O2 was ( 1.8 ± 0.2) × 106 cm2 s-1 at 25°C. The activation energy of the diffusion process of O2 was estimated to be 27 kJ mol-1 from the temperature dependence of the diffusion coefficient. The solubility of O2 in BMPTFSI was 14 mmol dm-3 at 25°C and decreased with an increase in temperature. The diffusion coefficient of O2- was 0.86 × 10-6 cm2 s-1 at 25°C. The formal potential of O 2/O2- couple was 1.13 V vs ferrocene/ ferrocenium.
AB - The electrochemical behavior of oxygen (O2)/superoxide ion (O2-) couple was investigated with the aid of the ultramicroelectrode technique in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI) room-temperature molten salt (ionic liquid). The diffusion coefficient of O2 was ( 1.8 ± 0.2) × 106 cm2 s-1 at 25°C. The activation energy of the diffusion process of O2 was estimated to be 27 kJ mol-1 from the temperature dependence of the diffusion coefficient. The solubility of O2 in BMPTFSI was 14 mmol dm-3 at 25°C and decreased with an increase in temperature. The diffusion coefficient of O2- was 0.86 × 10-6 cm2 s-1 at 25°C. The formal potential of O 2/O2- couple was 1.13 V vs ferrocene/ ferrocenium.
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U2 - 10.1149/1.1946530
DO - 10.1149/1.1946530
M3 - Article
VL - 152
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 8
ER -