A comparison among LiPF6, LiPF3(CF2CF3)3 (LiFAP), and LiN(SO2CF2CF3)2 (LiBETI) solutions:: electrochemical and thermal studies

被引：67

作者：

Gnanaraj, JS

Zinigrad, E

Levi, MD

Aurbach, D ^{[1
]}

Schmidt, M

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Merck KGaA, D-64293 Darmstadt, Germany

来源：

JOURNAL OF POWER SOURCES | 2003年 / 119卷

关键词：

LiPF6; LiPF3(CF2CF3)(3) (LiFAP); LiN(SO2CF2CF3)(2) (LiBETI); thermal stability; ARC; impedance spectroscopy; surface films; Li-ion batteries;

D O I：

10.1016/S0378-7753(03)00256-8

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：

EC-DMC-DEC solutions comprising LiPF3(CF2CF3)(3) (LiFAP), LiPF6 and LiN(SO2CF2CF3)(2) (LiBETI) were tested with graphite and LiMn2O4 electrodes. Cyclic voltammetry (CV, fast and slow scan rates), chronopotentiometry, impedance spectroscopy, surface sensitive FTIR and XPS were used for this study. It was found that the new salt LiFAP is a promising candidate for use in rechargeable Li-ion batteries. The thermal behavior of these electrolyte solutions was also studied using accelerating rate calorimetry (ARC). It was found that LiFAP solutions are more stable than LiPF6 solutions while LiBETI solutions have the highest thermal stability. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：799 / 804

页数：6

共 9 条

[1] Chemical composition and morphology of the elevated temperature SEI on graphite [J].