Instability of Ionic Liquid-Based Electrolytes in Li-O-2 Batteries
2015 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 119, no 32, 18084-18090 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2015. Vol. 119, no 32, 18084-18090 p.
IdentifiersURN: urn:nbn:se:uu:diva-261957DOI: 10.1021/acs.jpcc.5b04950ISI: 000359683800010OAI: oai:DiVA.org:uu-261957DiVA: diva2:852576