Redox reaction of 2, 2, 6, 6-tetramethylpiperidine-l-oxyI (TEMPO) in lithium bis(trifluoromethylsulfonyl)amide-tetraglyme solvate ionic liquid

Y. Katayama, K. Wada, N. Tachikawa, N. Serizawa

研究成果: Conference contribution

抄録

The redox reaction of 2, 2, 6, 6-tetramethylpiperidine-l-oxyl (TEMPO) has been investigated in a solvate ionic liquid composed of lithium bis(trifluoromethylsulfonyl)amide (LiTFSA) and tetraglyme (G4). The one-electron transfer and quasi-reversible redox reaction of TEMPO+/TEMPO was observed in the stable electrochemical potential window of the solvate ionic liquid. The formal potential of TEMPO'S/TEMPO was 0.19 V vs. Ferrocene/ferrocenium. The diffusion coefficients of TEMPO and TEMPO+at 298 K were 1.8 × 10-7 and 7.6 × 10-8cm2 s-1, respectively, reflecting the coulombic interaction between the charged species with the anion of the solvate ionic liquid. The standard rate constant for the redox reaction of TEMPO+/TEMPO at 298 K was 1.9 × 10-4 cm s-1. Charge-discharge of a lithium secondary cell using a lithium-ion conductive glass-ceramics (LICGC) as a diaphragm and [Li(G4)]TFSA containing TEMPO as a catholyte was found to be possible with the average discharge voltage of 3.4 V.

本文言語English
ホスト出版物のタイトルECS Transactions
編集者W. Matthew Reichert, Robert A. Mantz, Paul C. Trulove, Luke M. Haverhals, Elizabeth J. Biddinger, Hugh C. De Long, Alice H. Suroviec, Minoru Mizuhata, Mikito Ueda, Adriana Ispas, Andreas Bund, David P. Durkin
出版社Electrochemical Society Inc.
ページ113-116
ページ数4
14
ISBN(印刷版)9781510871748
DOI
出版ステータスPublished - 2018
イベントSymposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
継続期間: 2018 9 302018 10 4

出版物シリーズ

名前ECS Transactions
番号14
86
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Conference

ConferenceSymposium on Molten Salts and Ionic Liquids 21 - AiMES 2018, ECS and SMEQ Joint International Meeting
国/地域Mexico
CityCancun
Period18/9/3018/10/4

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

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