Electrochemical studies and self diffusion coefficients in cyclic ammonium based ionic liquids with allyl substituents

Tzi Yi Wu, Shyh Gang Su, H. Paul Wang, Yuan Chung Lin, Shr Tusen Gung, Ming Wei Lin, I. Wen Sun

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Several cyclic ammonium-based ionic liquids (ILs) with allyl substituent are synthesized, these allyl substituent ILs have high ionic conductivity (up to 4.72 mS cm-1 at 30 °C) and wide electrochemical window of 5 V. The electrochemical behaviors of two organometallic redox couples Fc/Fc + (ferrocene/ferrocenium) and Cc/Cc+ (cobaltocene/ cobaltocenium) have been studied in these ILs, the calculated Stokes-Einstein product (Dη T-1) of ferrocene in ILs is larger than that of cobaltocenium in ILs. The self-diffusion coefficients of cation and anion in these ILs are studied using pulsed gradient spin-echo NMR technique. There are very few reports where electrochemically derived diffusion coefficients and self diffusion coefficients are available for comparison, so a new key concept in electrochemistry could be developed in this paper.

Original languageEnglish
Pages (from-to)3209-3218
Number of pages10
JournalElectrochimica Acta
Volume56
Issue number9
DOIs
Publication statusPublished - 2011 Mar 30

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

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