Electrode kinetics of some iron complexes in an imide-type room-temperature ionic liquid

Naoki Tachikawa, Yasushi Katayama, Takashi Miura

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The electrode kinetics of Fe(bpy)33+/Fe(bpy) 32+ (bpy = 2,2'-bipyridine), FeCp2 +/FFeCp2 (Cp- = cyclopentadienyl), FeCl 4-/FeCl42- and Fe(CN) 63-/Fe(CN)64- on a platinum electrode were investigated over the temperature range from 25 to 60°C in a room-temperature ionic liquid, 1-n-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMFTFSI). The average activation energy for the diffusion coefficients of these complexes was ∼ 20 kJ mol-1, which was close to the activation energy for the viscosity of BMPTFSI. The diffusion coefficients of these complexes were found to be affected not only by the viscosity of BMPTFSI but also by the charge of the complexes. On the other hand, the heterogeneous rate constants of these redox reactions were estimated to be ∼ 10-4 cm s-1 by electrochemical impedance spectroscopy. The apparent heterogeneous rate constants of Fe(bpy) 33+/Fe(bpy)32+, FeCp 2+/FeCp2 and Fe(CN)6 3-/Fe(CN)64- were smaller than those in other conventional solvents. copyright The Electrochemical Society.

本文言語English
ホスト出版物のタイトルECS Transactions - 15th International Symposium on Molten Salts
出版社Electrochemical Society Inc.
ページ577-587
ページ数11
35
ISBN(電子版)9781566775922
ISBN(印刷版)9781566775922
DOI
出版ステータスPublished - 2006
イベント15th International Symposium on Molten Salts - 210th ECS Meeting - Cancun, Mexico
継続期間: 2006 10月 292006 11月 3

出版物シリーズ

名前ECS Transactions
番号35
3
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

Other15th International Symposium on Molten Salts - 210th ECS Meeting
国/地域Mexico
CityCancun
Period06/10/2906/11/3

ASJC Scopus subject areas

  • 工学(全般)

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