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

International Journal of Molecular Sciences

Lorenzo Grande²  Elie Paillard²  Guk-Tae Kim²  Simone Monaco¹ 

[1] Dipartimento di Chimica Giacomo Ciamician, Alma Mater Studiorum University of Bologna, via Selmi 2, Bologna 40126, Italy; E-Mail:;Institute of Physical Chemistry and Münster Electrochemical Energy Technology (MEET) Battery Research Center, University of Muenster, Corrensstraße 28-30, Muenster 48149, Germany; E-Mails:

关键词: lithium air batteries;    ionic liquids;    lithium metal;    electrolytes;    Pyr₁₄TFSI;    efficiency calculation;    solid electrolyte interphase (SEI);   

DOI  :  10.3390/ijms15058122

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland