| Title | Ionic liquid electrolytes for safer lithium batteries I. investigation around optimal formulation |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2017 |
| Authors | Moreno, M., Simonetti E., Appetecchi Giovanni Battista, Carewska M., Montanino M., Kim G.-T., Loeffler N., and Passerini S. |
| Journal | Journal of the Electrochemical Society |
| Volume | 164 |
| Pagination | A6026-A6031 |
| ISSN | 00134651 |
| Keywords | Bis(fluorosulfonyl)imide, Bis(trifluoromethane sulfonyl)imide, carbon, Electric batteries, Electrochemical stabilities, Electrodes, Electrolytes, Ion-transport properties, Ionic liquid electrolytes, Ionic liquids, Ionic-liquid based electrolytes, Liquids, Lithium-ion batteries, Mixtures, Optimal formulation, Working electrode |
| Abstract | In this paper we report on the investigation of ionic liquid-based electrolytes with enhanced characteristics. In particular, we have studied ternary mixtures based on the lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt and two ionic liquids sharing the same cation (N-methyl-N-propyl pyrrolidinium, PYR 13 ), but different anions, bis(trifluoromethanesulfonyl)imide (TFSI) and bis(fluorosulfonyl)imide (FSI). The LiTFSI-PYR13TFSI-PYR 13 FSI mixtures, found to be ionically dissociated, exhibit better ion transport properties (about 10 -3 S cm -1 at -20°C) with respect to similar ionic liquid electrolytes till reported in literature. An electrochemical stability window of 5 V is observed in carbon working electrodes. Preliminary battery tests confirm the good performance of these ternary electrolytes with high-voltage NMC cathodes and graphite anodes. Ionic liquid electrolyte mixtures, PYR13TFSI, PYR13FSI. © The Author(s) 2016. Published by ECS. |
| Notes | cited By 32 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012872183&doi=10.1149%2f2.0051701jes&partnerID=40&md5=ce599201e839e6fad49e99d1d33d4ab5 |
| DOI | 10.1149/2.0051701jes |
| Citation Key | Moreno2017A6026 |
