Ionic liquid electrolytes for safer lithium batteries: I. Investigation around optimal formulation

TitleIonic liquid electrolytes for safer lithium batteries: I. Investigation around optimal formulation
Publication TypePresentazione a Congresso
Year of Publication2016
AuthorsMoreno, M., Simonetti E., Appetecchi Giovanni Battista, Carewska M., Montanino M., Kim G.-T., Loeffler N., and Passerini S.
Conference NameECS Transactions
PublisherElectrochemical Society Inc.
ISBN Number9781607685395
KeywordsBis(fluorosulfonyl)imide, Bis(trifluoromethane sulfonyl)imide, carbon, Electric batteries, Electrochemical stabilities, Electrolytes, Ion-transport properties, Ionic liquid electrolytes, Ionic liquids, Ionic-liquid based electrolytes, Liquids, Lithium, Lithium 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, PYR13), but different anions, bis(trifluoromethanesulfonyl)imide (TFSI) and bis(fluorosulfonyl)imide (FSI). The LiTFSIPYR13TFSI-PYR13FSI mixtures 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. © The Electrochemical Society.

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84990890550&doi=10.1149%2f07301.0067ecst&partnerID=40&md5=83f80aafd907950d8f7b278da6f4b463
DOI10.1149/07301.0067ecst