Effect of tris(methoxy diethylene glycol) borate on ionic conductivity and electrochemical stability of ethylene carbonate-based electrolyte

被引：28

作者：

Choi, Nam-Soon ^{[1
]}

Ryu, Sang-Woog ^{[2
]}

Park, Jung-Ki ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

[2] Chungbuk Natl Univ, Sch Chem Engn, Cheongju 361763, Chungbuk, South Korea

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 22期

关键词：

anion receptor; TMDGB; TPFPB; FT-IR; lewis acid-base interaction;

D O I：

10.1016/j.electacta.2008.04.070

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of tris(methoxy diethylene glycol) borate (TMDGB) on the coordination structure between ethylene carbonate (EC) solvents with high permittivity and ClO4- anions has been investigated by using a Fourier transform infrared (FT-IR) spectroscopy. The results of Fr-IR analyses manifested that the boron atom of TMDGB anion receptor forms the complex with ClO4- anions. Even though Lewis acid-base interaction between the TMDGB anion receptor and ClO4- anions in the electrolyte solution lead to the prominent enhancement of both the dissociation degree of lithium salts and the lithium ion transference number, the ionic conductivity of the EC-based electrolyte solution decreased due to the trap Of ClO4- anions by introducing the TMDGB anion receptor. The electrochemical stability of gel polymer electrolyte based on semi-interpenetrating network (IPN) structure with tris(pentafluoro phenyl) borane (TPFPB) or TMDGB anion receptor was obviously improved. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：6575 / 6579

页数：5

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