Volume 59, Issue 9 pp. 832-842
Review

Ionic Liquids and their Polymers in Lithium-Sulfur Batteries

Elinor Josef

Elinor Josef

Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Am Mühlenberg 1, 14476 Potsdam, Germany

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Yajing Yan

Yajing Yan

Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden

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Marian Cristian Stan

Marian Cristian Stan

MEET Battery Research Center, University of Münster, Corrennstrasse 46, 48149 Münster, Germany

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Julia Wellmann

Julia Wellmann

MEET Battery Research Center, University of Münster, Corrennstrasse 46, 48149 Münster, Germany

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Alen Vizintin

Alen Vizintin

National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia

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Martin Winter

Martin Winter

MEET Battery Research Center, University of Münster, Corrennstrasse 46, 48149 Münster, Germany

Helmholz-Institute Münster (HI MS), IEK-12 of Forschungszentrum Jülich, Corrensstrasse 46, 48149 Münster, Germany

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Patrik Johansson

Patrik Johansson

Department of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden

ALISTORE-European Research Institute, CNRS FR 3104, Hub de l'Energie, Rue Baudelocque, 80039 Amiens, France

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Robert Dominko

Robert Dominko

National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia

ALISTORE-European Research Institute, CNRS FR 3104, Hub de l'Energie, Rue Baudelocque, 80039 Amiens, France

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Ryan Guterman

Corresponding Author

Ryan Guterman

Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Am Mühlenberg 1, 14476 Potsdam, Germany

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First published: 05 March 2019
Citations: 21

Graphical Abstract

Abstract

Future optimized lithium-sulfur batteries may promise higher energy densities than the current standard. However, there are many barriers which hinder their commercialization. In this review we describe how ionic liquids (ILs) and their polymers are utilized in different components of the battery to address some of these issues. For example, IL-based electrolytes have the potential to reduce the solubility of polysulfides compared to conventional organic electrolytes. Polymerizing ILs directly on the surface of the Li-metal anode is suggested as an approach to protect the surface of this electrode. Finally, using poly(ionic liquids) (PILs) as binders for the cathode active material may increase the performance of the cathode as compared to polyvinylidene difluoride (PVdF) and could inhibit swelling-induced degradation. These results demonstrate the advantages of ILs and their polymers for improving the performance of Li−S batteries.

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