Instability of Ionic Liquid-Based Electrolytes in Li-O2 Batteries
Journal article, 2015

Ionic liquids (ILs) have been proposed as promising solvents for Li-air battery electrolytes. Here, several ILs have been investigated using differential electrochemical mass spectrometry (DEMS) to investigate the electrochemical stability in a Li-O-2 system, by means of quantitative determination of the rechargeability (GER/ORR), and thereby the Coulombic efficiency of discharge and charge. None of the IL-based electrolytes are found to behave as needed for a functional Li-O-2 battery but perform better than commonly used organic solvents. Also the extent of rechargeability/reversibility has been found to be strongly dependent on the choice of IL cation and anion as well as various impurities.


S. Das

Technical University of Denmark (DTU)

J. Hojberg

Technical University of Denmark (DTU)

Haldor Topsoe

K. B. Knudsen

Technical University of Denmark (DTU)

S. R. Younesi

Uppsala University

Technical University of Denmark (DTU)

Patrik Johansson

Chalmers, Applied Physics, Condensed Matter Physics

P. Norby

Technical University of Denmark (DTU)

T. Vegge

Technical University of Denmark (DTU)

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 119 32 18084-18090

Driving Forces

Sustainable development

Subject Categories

Materials Engineering

Nano Technology

Areas of Advance


Materials Science



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