Block Copolymer Solid Battery Electrolyte with High Li-Ion Transference Number

被引：142

作者：

Ghosh, Ayan ^{[1
]}

Wang, Chunsheng ^{[1
]}

Kofinas, Peter ^{[2
]}

机构：

[1] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

[2] Univ Maryland, Fischell Dept Bioengn, College Pk, MD 20742 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 07期

基金：

美国国家科学基金会;

关键词：

electrochemistry; lithium compounds; polymer blends; polymer electrolytes; secondary cells; POLYMER ELECTROLYTES; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; SALT; NANOCOMPOSITE; CONDUCTIVITY; TEMPERATURE; PERFORMANCE; TRANSPORT; LIBOB;

D O I：

10.1149/1.3428710

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical properties of a solid polymer electrolyte consisting of a diblock copolymer and lithium bis(oxalato)borate, LiBC(4)O(8) (LiBOB) salt, is reported. The spherical microphase-separated diblock copolymer is composed of a majority poly(ethylene oxide) (PEO) block and a minority random copolymer block of methyl methacrylate (MMA) and lithium salt of methacrylic acid (MAALi), PEO-b-(PMMA-ran-PMAALi). Salt-optimized electrolyte membranes of the diblock copolymer and LiBOB salt exhibited an average lithium-ion transference number (T(Li)(+)) value of 0.9 at room temperature (21-23 degrees C). The solid-state flexible, translucent polymer electrolyte shows a wide electrochemical stability window and excellent interface properties with the lithium metal electrode. The combination of these properties makes these block copolymer membranes viable electrolyte candidates for flexible lithium-ion batteries. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3428710] All rights reserved.

引用

页码：A846 / A849

页数：4

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