A novel high temperature stable lithium salt (Li2B12F12) for lithium ion batteries

被引：39

作者：

Arai, Juichi ^{[1
]}

Matsuo, Akira ^{[1
]}

Fujisaki, Takashi ^{[2
]}

Ozawa, Kazunori ^{[2
]}

机构：

[1] Air Prod Japan Inc, Japan Tech Lab, Adv Mat, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan

[2] ENAX Inc, Yonezawa Lab, Yonezawa, Yamagata 9920003, Japan

来源：

JOURNAL OF POWER SOURCES | 2009年 / 193卷 / 02期

关键词：

Lithium battery; Lithium salt; Electrolyte; Cycle life; Storage life; ELECTROLYTE; CELLS; CARBONATE; GRAPHITE; ETHYLENE; SURFACE;

D O I：

10.1016/j.jpowsour.2009.04.001

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：

Basic properties and battery performances of the novel high temperature stable lithium salt (Li2B12F12, Dilithium Dodecafluorododecaborate; Li2DFB) were studied using a Mn-based cathode and anode composed of a hard carbon and graphite mixture. The effect of co-solvents (mainly linear carbonate in electrolyte formulation of PC/EC/co-solvent (5/30/65 vol% mixture)) on conductivity, viscosity, charge-discharge capacities, rate performance, temperature performance, cycle life and storage life at 60 degrees C was investigated. Conductivity of Li2DFB electrolyte increased with reducing its viscosity by changing co-solvent and increasing the volume of the higher dielectric solvent. Li2DFB electrolytes showed comparable discharge capacity and columbic efficiency against LiPF6 electrolyte. Li2DFB electrolytes improved the storage life and cycle life of a Mn-based cell at 60 degrees C. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：851 / 854

页数：4

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