Ionic liquid electrolytes for Li-air batteries: lithium metal cycling.

Int J Mol Sci

Institute of Physical Chemistry and Münster Electrochemical Energy Technology (MEET) Battery Research Center, University of Muenster, Corrensstraße 28-30, Muenster 48149, Germany.

Published: May 2014

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.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057723PMC
http://dx.doi.org/10.3390/ijms15058122DOI Listing

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