Lithium tris[3-fluoro-1,2-benzenediolato(2-)-O,O′]phosphate as a novel lithium salt for lithium battery electrolytes

被引：32

作者：

Nanbu, N ^{[1
]}

Tsuchiya, K ^{[1
]}

Shibazaki, T ^{[1
]}

Sasaki, Y ^{[1
]}

机构：

[1] Tokyo Inst Polytech, Fac Engn, Dept Appl Chem, Kanagawa 2430297, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2002年 / 5卷 / 09期

关键词：

D O I：

10.1149/1.1496535

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We have synthesized a novel lithium salt with a chelate compound of phosphorus, lithium tris[3-fluoro-1,2-benzenediolato(2-)-O,O']phosphate (3-FLTBP). The thermal stability and electrolytic properties of 3-FLTBP, and the coulombic efficiency of the deposition/dissolution cycling for a lithium metal (lithium electrode cycling efficiency! are investigated. 3-FLTBP is more thermally stable than lithium tris[1,2-benzenediolato(2-)-O,O']phosphate (LTBP) and lithium tris[4-methyl-1,2-benzenediolato(2-)O, O']phosphate (4-MLTBP), which we previously synthesized. The electrochemical stability in propylene carbonate solutions and the specific conductivities in ethylene carbonate-dimethyl carbonate (mole ratio 1: 1) binary solutions decrease in the following ascending order: 3-FLTBP, LTBP, and 4-MLTBP. The mixing of the lithium organophosphate and LiPF6 enhances the cycling efficiency over the range of high cycle numbers. (C) 2002 The Electrochemical Society.

引用

页码：A202 / A205

页数：4

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