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Int. J. Mol. Sci. 2014, 15(5), 8122-8137; doi:10.3390/ijms15058122

Ionic Liquid Electrolytes for Li–Air Batteries: Lithium Metal Cycling

1
Institute of Physical Chemistry and Münster Electrochemical Energy Technology (MEET) Battery Research Center, University of Muenster, Corrensstraße 28-30, Muenster 48149, Germany
2
Dipartimento di Chimica Giacomo Ciamician, Alma Mater Studiorum University of Bologna, via Selmi 2, Bologna 40126, Italy
3
Helmholtz Institute Ulm, Karlsruhe Institute of Technology, Albert-Einstein-Allee 11, Ulm 89081, Germany
*
Authors to whom correspondence should be addressed.
Received: 7 March 2014 / Revised: 16 April 2014 / Accepted: 17 April 2014 / Published: 8 May 2014
(This article belongs to the Special Issue Ionic Liquids 2014 & Selected Papers from ILMAT 2013)
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Abstract

In this work, the electrochemical stability and lithium plating/stripping performance of N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr14TFSI) are reported, by investigating the behavior of Li metal electrodes in symmetrical Li/electrolyte/Li cells. Electrochemical impedance spectroscopy measurements and galvanostatic cycling at different temperatures are performed to analyze the influence of temperature on the stabilization of the solid electrolyte interphase (SEI), showing that TFSI-based ionic liquids (ILs) rank among the best candidates for long-lasting Li–air cells.
Keywords: lithium air batteries; ionic liquids; lithium metal; electrolytes; Pyr14TFSI; efficiency calculation; solid electrolyte interphase (SEI) lithium air batteries; ionic liquids; lithium metal; electrolytes; Pyr14TFSI; efficiency calculation; solid electrolyte interphase (SEI)
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Grande, L.; Paillard, E.; Kim, G.-T.; Monaco, S.; Passerini, S. Ionic Liquid Electrolytes for Li–Air Batteries: Lithium Metal Cycling. Int. J. Mol. Sci. 2014, 15, 8122-8137.

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