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.
Author
S. Das
Danmarks Tekniske Universitet
J. Hojberg
Haldor Topsoe A/S
Danmarks Tekniske Universitet
K. B. Knudsen
Danmarks Tekniske Universitet
S. R. Younesi
Danmarks Tekniske Universitet
Angstrom Laboratory
Patrik Johansson
Chalmers, Applied Physics, Condensed Matter Physics
P. Norby
Danmarks Tekniske Universitet
T. Vegge
Danmarks Tekniske Universitet
Journal of Physical Chemistry C
1932-7447 (ISSN) 1932-7455 (eISSN)
Vol. 119 32 18084-18090Driving Forces
Sustainable development
Subject Categories (SSIF 2011)
Materials Engineering
Nano Technology
Areas of Advance
Energy
Materials Science
DOI
10.1021/acs.jpcc.5b04950