Liquid electrolytes based on new lithium conductive imidazole salts

被引：52

作者：

Niedzicki, L. ^{[1
]}

Kasprzyk, M. ^{[1
]}

Kuziak, K. ^{[1
]}

Zukowska, G. Z. ^{[1
]}

Marcinek, M. ^{[1
]}

Wieczorek, W. ^{[1
]}

Armand, M. ^{[2
]}

机构：

[1] Warsaw Univ Technol, Dept Chem, PL-00664 Warsaw, Poland

[2] Univ Picardie Jules Verne, CNRS, UMR 6007, LRCS, F-80039 Amiens, France

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 03期

关键词：

Lithium electrolytes; Lithium salts; Conductivity; Transference number; Interfacial stability; POLYMER ELECTROLYTES; NONAQUEOUS ELECTROLYTES; PROPYLENE CARBONATE; ION CELLS; BATTERIES; DECOMPOSITION;

D O I：

10.1016/j.jpowsour.2010.08.097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present paper new generation of imidazole-derived lithium salts (LiTDI-Lithium 4,5-dicyano-2-(trifluoromethyl)imidazolide, LiPDI-lithium 4,5-dicyano-2-(pentafluoroethyl)imidazolide and LiHDI-lithium 4,5-dicyano-2-(n-heptaflouoroporpyl)imidazolide) applied in a model liquid electrolyte, with propylene carbonate used as a solvent, is described. Room temperature ionic conductivities measured by Impedance Spectroscopy are as high as 10(-2) to 10(-3) S cm(-1) for the 0.1(-1) mol dm(-3) salt concentration range. Lithium cation transference equal to 1 mol dm(-3). Interface resistance measurements showed good stability at high-0.5 mol dm(-3) or low-0.01 mol dm(-3) salt concentrations. Ionic associations were estimated using Fuoss-Kraus semiempirical method revealing relatively low association rates. The effect of anion structure on ioinc interactions and electrochemical characteristics of the studied electrolytes is discussed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1386 / 1391

页数：6

共 26 条

[1] CONDUCTIVITY MEASUREMENTS OF LITFSI TRIBLOCK COPOLYMERS WITH A CENTRAL POE SEQUENCE [J].