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8790849 
Journal Article 
Influence of lithium salt addition on ionic conductivity and transporting properties of lithium bis(trifluoromethanesulfonyl)imide-doped glycine-based ionic liquid electrolyte 
Kuo, CWen; Hao, Lin; Kuo, PLin; Chen, PinR; Wu, TziYi 
2014 
1 
Taiwan Institute of Chemical Engineers. Journal
ISSN: 1876-1070 
45 
4 
1270-1279 
WOS:000340352000021 
The effects of the incorporation of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) on the ionic transporting and physicochemical properties of a glycine-based ionic liquid (IL) are studied. The ionization conditions of each ionic species in LiTFSI-doped glycine-based ionic liquid electrolytes ([MGlyA][TFSI]), are characterized by diffusion coefficients of the species measured using the pulsed gradient spin-echo (PGSE) NMR technique. Temperature-dependent viscosity, ionic conductivity, molar conductivity, and self diffusion coefficient in neat [MGlyA][TFSI] and LiTFSI-doped [MGlyA][TFSI] followed the Vogel-Tamman-Fulcher equation at all concentrations. The experimental molar conductivity (Lambda) of neat [MGlyA][TFSI] and LiTFSI-doped [MGlyA][TFSI] is lower than that of the calculated molar conductivity (Lambda(NMR)) from PGSE NMR technique over the entire temperature range, demonstrating that not all the diffusive species contribute to the ionic conduction, that is, free-ions, ionic pairs, and/or clusters coexist in ILs. (C) 2013 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved. 
Ionic liquid electrolyte; Ionic conductivity; Glycine; Walden's rule; Self-diffusion coefficient; Lithium ion transference number