Ionic Liquid Based Electrolytes: Correlating Li Diffusion Coefficients and Battery Performance

被引：21

作者：

Indris, Sylvio ^{[1
]}

Heinzmann, Ralf ^{[2
]}

Schulz, Michael ^{[3
]}

Hofmann, Andreas ^{[3
]}

机构：

[1] Karlsruhe Inst Technol, IAM ESS, D-76021 Karlsruhe, Germany

[2] Bruker Biospin GmbH, D-76287 Rheinstetten, Germany

[3] Karlsruhe Inst Technol, Inst Appl Mat IAM WPT, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 14期

关键词：

NMR-SPECTROSCOPY; LITHIUM-ION; NANOCRYSTALLINE CERAMICS; FIELD-GRADIENT; SALT MIXTURES; DYNAMICS; CONDUCTIVITY; SOLVATION; SOLVENT; CHALLENGES;

D O I：

10.1149/2.0131414jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We studied the conductivity of different ionic-liquid based electrolytes together with the Li ion diffusion coefficients obtained from field-gradient nuclear magnetic resonance spectroscopy. For different electrolytes, although having similar conductivities, drastic differences in the battery performance could be explained by the large differences in the Li ion diffusivities. While the diffusivity of the Li ions strongly depends on the nature of the solvent, the anion of the Li salt has only minor influence on the Li diffusion. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：A2036 / A2041

页数：6

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