Abstract
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−O2 system, by means of
quantitative determination of the rechargeability (OER/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−O2 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.
Original language | English |
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Journal | The Journal of Physical Chemistry Part C |
Volume | 119 |
Issue number | 32 |
Pages (from-to) | 18084–18090 |
Number of pages | 7 |
ISSN | 1932-7447 |
DOIs | |
Publication status | Published - 2015 |