Towards improvement of the electrochemical properties of ionic liquid-containing polyethylene oxide-based electrolytes. (1st May 2017)

• Record Type: Journal Article
• Authors: Simonetti, E.; Carewska, M.; Di Carli, M.; Moreno, M.; De Francesco, M.; Appetecchi, G.B.
• Is Part Of: Electrochimica acta. Volume 235(2017)
• Page Start: 323
• Page End: 331
• Publication Date: 2017-05-01
• Subjects: PEO electrolytes -- Ionic liquids -- Solvent-free procedure -- Phase separation -- Percolation; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.03.080
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Abstract: We report an investigation on quaternary, polyethylene oxide (PEO)-based electrolytes as separators for lithium polymer batteries. The target is the development of Li + conducting membranes, containing large fraction of the N -methyl- N -propylpyrrolidinium bis(fluorosulfonyl)imide ionic liquid, able to combine fast ion transport properties with improved electrochemical stability. The PEO electrolytes, prepared through a fully-dry solvent-free procedure, exhibited good aging resistance and conductivity values equal to 3.46×10 −4 and 2.43×10 −3 S cm −1 at −20 and 20 °C, respectively, combined with an anodic stability up to 4.5 V ( vs . Li°/Li + ). These results represent the best performance, in terms of ion transport properties and electrochemical stability, reported till now for PEO electrolytes.