Anodic Aluminum Dissolution of LiTFSA Containing Electrolytes for Li-Ion-Batteries

被引：34

作者：

Hofmann, Andreas ^{[1
]}

Merklein, Lisa ^{[1
]}

Schulz, Michael ^{[1
]}

Hanemann, Thomas ^{[1
,2
]}

机构：

[1] KIT, Inst Angew Mat Werkstoffprozesstech, D-76344 Eggenstein Leopoldshafen, Germany

[2] Univ Freiburg, Inst Mikrosyst Tech, D-79110 Freiburg, Germany

来源：

ELECTROCHIMICA ACTA | 2014年 / 116卷

关键词：

Aluminum; Corrosion; Electrolytes; Ionic Liquid; RECHARGEABLE LITHIUM BATTERIES; CURRENT COLLECTOR; HIGH-VOLTAGE; CORROSION; LIQUID; SALTS; SULFOLANE; DIFFUSION; SOLVATION; BEHAVIOR;

D O I：

10.1016/j.electacta.2013.11.085

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

In this study, novel electrolyte solvents and the conducting salt lithium bis(trifluoromethanesulfonyl) azanide (LiTFSA) are compared with respect to aluminum anodic dissolution, often called in an ambiguous manner aluminum corrosion. Namely, mixtures of propylene carbonate, sulfolane, the ionic liquid N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)azanide (DMMA-TFSA) and various concentrations of LiTFSA are prepared and investigated in Al/Li cell configuration. It is verified that the choice of the concentration of LiTFSA and the composition of the solvent mixture affects the tendency of Al dissolution significantly. Principally, the best results (least dissolution/corrosion) are obtained in case of high LiTFSA concentrations and by adding the ionic liquid DMMA-TFSA to the organic solvents. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：388 / 395

页数：8

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