Modern generation of polymer electrolytes based on lithium conductive imidazole salts

被引：86

作者：

Niedzicki, L. ^{[1
]}

Kasprzyk, M. ^{[1
]}

Kuziak, K. ^{[1
]}

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

Armand, M. ^{[2
]}

Bukowska, M. ^{[1
]}

Marcinek, M. ^{[1
]}

Szczecinski, P. ^{[1
]}

Wieczorek, W. ^{[1
]}

机构：

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

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

来源：

JOURNAL OF POWER SOURCES | 2009年 / 192卷 / 02期

关键词：

Lithium electrolytes; Lithium salts; Conductivity; Transference number; Interfacial stability; NONAQUEOUS ELECTROLYTES; BATTERY ELECTROLYTES; TRANSFERENCE NUMBERS; ION CELLS; TRANSPORT; FAMILY;

D O I：

10.1016/j.jpowsour.2009.03.050

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 this paper the application of completely new generation imidazole-derived salts in a model polymer electrolyte is described. As a polymer matrix. two types of liquid low molecular weight PEO analogues e.g. dimethyl ether of poly(ethylene glycol) of 500 g mol(-1) average molar mass (PEGDME500) and methyl ether of poly(ethylene glycol) of 350 g mol(-1) average molar mass (PEGME350) were used. Room temperature conductivities measured by electrochemical impedance spectroscopy were found to be as high as 10(-3)-10(-4) S cm(-1) in the 0.1-1 mol dm(-3) range of salt concentrations. Li+ transference numbers higher than 0.5 were measured and calculated using the Bruce-Vincent method. For a complete electrochemical characterization the interphase resistance stability over time was carefully monitored for a period of 30 clays. Structural analysis and interactions between electrolyte components were done by Raman spectroscopy. Fuoss-Kraus semiempirical method was applied for estimation of free ions and ionic agglomerates showing that fraction of ionic agglomerates for salt concentration of 0.1-1 mol dm(-3) is much lower than in electrolytes containing LiClO4 in corresponding concentrations. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：612 / 617

页数：6

共 34 条

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