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Instability of Ionic Liquid-Based Electrolytes in Li-O-2 Batteries
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0003-2538-8104
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2015 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 119, no 32, p. 18084-18090Article in journal (Refereed) Published
Abstract [en]

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, p. 18084-18090
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Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-261957DOI: 10.1021/acs.jpcc.5b04950ISI: 000359683800010OAI: oai:DiVA.org:uu-261957DiVA, id: diva2:852576
Available from: 2015-09-09 Created: 2015-09-07 Last updated: 2017-12-04Bibliographically approved

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Younesi, Reza

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