Ionic conductivity and diffusion in lithium tetrafluoroborate-doped 1-methyl-3-pentylimidazolium tetrafluoroborate ionic liquid

Tzi Yi Wu, Lin Hao, Chung Wen Kuo, Yuan Chung Lin, Shyh Gang Su, Ping Lin Kuo, I. Wen Sun

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

Ion transport processes in mixtures of 1-methyl-3-pentylimidazolium tetrafluoroborate ([MPI][BF 4]) and lithium tetrafluoroborate (LiBF 4) are characterized using conductivity and pulsed field gradient NMR measurements at various temperatures. The viscosity, ionic conductivity, molar conductivity, and self diffusion coefficient in neat [MPI][BF 4] and LiBF 4-doped [MPI][BF 4] change with temperature following the Vogel-Tamman-Fulcher equation, and the density shows a linear decrease. The ionic conductivity and the self-diffusion coefficient of each ionic specie decrease with increasing concentration of LiBF 4 in LiBF 4-doped [MPI][BF 4]. The correlation between ionic conductivity and viscosity is based on the classical Walden rule, the α values of neat [MPI][BF 4] and LiBF 4-doped [MPI][BF 4] calculated from the slopes of the Walden plots are compared to those calculated from the ratio of activation energies for viscosity and molar conductivity (E a,Λ/E a,η). The comparison of activation energies of the reciprocal of viscosity, the ionic conductivity, and individual ion diffusion against the LiBF 4 concentration is also studied.

原文English
頁(從 - 到)2047-2064
頁數18
期刊International Journal of Electrochemical Science
7
發行號3
出版狀態Published - 2012 3月 1

All Science Journal Classification (ASJC) codes

  • 電化學

指紋

深入研究「Ionic conductivity and diffusion in lithium tetrafluoroborate-doped 1-methyl-3-pentylimidazolium tetrafluoroborate ionic liquid」主題。共同形成了獨特的指紋。

引用此