Ionic conductivity studies of LiBOB-doped silyl solvent blend electrolytes for lithium-ion battery applications

被引：12

作者：

Barth, Wilfried V. ^{[1
]}

Hueso, Adrian Pena ^{[2
]}

Zhou, Liu ^{[2
]}

Lyons, Leslie J. ^{[1
]}

West, Robert ^{[2
]}

机构：

[1] Grinnell Coll, Dept Chem, Grinnell, IA 50112 USA

[2] Silatronix Inc, Madison, WI 53704 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 272卷

基金：

美国国家科学基金会;

关键词：

Lithium-ion batteries; Lithium bis(oxalato)borate; Organosilicon electrolyte; Electrolyte solvent blend; TEMPERATURE-DEPENDENCE; POLYMER ELECTROLYTES; VISCOSITY; BIS(OXALATO)BORATE; DIFFUSION;

D O I：

10.1016/j.jpowsour.2014.08.075

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：

The ionic conductivity of LiBOB-doped electrolytes containing two silyl solvents, bis[2-(2-methoxyethoxy)ethoxy] dimethylsilane, 1, and [2-(2-methoxyethoxy)ethoxy] trimethylsilane,2, was measured from -10 degrees C to 50 degrees C using AC impedance spectroscopy to assess their potential use in commercial Li-ion cells. The effects of salt concentration, solvent composition, and temperature on the conductivity of the electrolytes are reported. In addition, conductivity data were fit using the Vogel-Tamman-Fulcher (VTF) equation to obtain the parameters sigma(0), T-0, and E-a, which correspond closely to conductivity and viscosity. All the electrolytes produced conductivities above the 1.0 mS cm(-1) threshold required for commercial application. The 1:1 (vl) solvent composition possesses the highest conductivity, with the optimal 0.8 M salt-loading yielding the highest sigma(25) at 1.99 +/- 0.02 mS cm(-1). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：190 / 195

页数：6

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