Stability of Li/Polymer Electrolyte-Ionic Liquid Composite/Lithium Conducting Glass Ceramics in an Aqueous Electrolyte
- 1 January 2011
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 14 (4), A45-A48
- https://doi.org/10.1149/1.3545964
Abstract
Motivated by the suppression on the lithium dendrite formation by the addition of an ionic liquid of N-methyl-N-propylpiperidinium-bis(trifluoromethanesulfonyl)imide (PP13TFSI) into the poly(ethylene oxide) (PEO)-LiN(SO2CF3)2 (LiTFSI) electrolyte, the stability and the electrochemical performance of a water-stable lithium metal electrode composed of Li/PEO18LiTFSI-1.44PP13TFSI/Li1+x+yTi2-xAlxP3-ySiyO12 (LTAP) is examined in an aqueous solution. A lithium/air cell with a configuration of Li/PEO18LiTFSI-1.44PP13TFSI/LTAP/aqueous 1 M LiCl solution/Pt air was stable and exhibited a significantly reduced electrode resistance of 113 Ω cm2 compared to Li/PEO18LiTFSI/LTAP/aqueous 1 M LiCl solution/Pt air of 500 Ω cm2, and exhibited low lithium deposition and striping polarization potentials of less than 0.3 V during charge and discharge at 0.3 mA cm−2 for 100 cycles at 60°C.Keywords
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