Ionic Liquid Electrolytes for Safer Lithium Batteries | Zendy

Margherita Moreno | Zendy; E. Simonetti | Zendy; Giovanni Battista Appetecchi | Zendy; M. Carewska | Zendy; Maria Montanino | Zendy; GukTae Kim | Zendy; Nicholas Loeffler | Zendy; Stefano Passerini | Zendy

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Ionic Liquid Electrolytes for Safer Lithium Batteries

Author(s) -

Margherita Moreno,

E. Simonetti,

Giovanni Battista Appetecchi,

M. Carewska,

Maria Montanino,

GukTae Kim,

Nicholas Loeffler,

Stefano Passerini

Publication year - 2016

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0051701jes

Subject(s) - ionic liquid , electrolyte , imide , electrochemistry , ternary operation , inorganic chemistry , lithium (medication) , electrochemical window , anode , materials science , chemistry , ionic conductivity , electrode , organic chemistry , polymer chemistry , catalysis , medicine , computer science , programming language , endocrinology

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 LiTFSI-PYR13TFSI-PYR13FSI 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.

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