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Lithium insertion in graphite from ternary ionic liquid-lithium salt electrolytes: II. Evaluation of specific capacity and cycling efficiency and stability at room temperature

TitoloLithium insertion in graphite from ternary ionic liquid-lithium salt electrolytes: II. Evaluation of specific capacity and cycling efficiency and stability at room temperature
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2009
AutoriLux, S.F., Schmuck M., Appetecchi Giovanni Battista, Passerini S., Winter M., and Balducci A.
RivistaJournal of Power Sources
Volume192
Paginazione606-611
ISSN03787753
Parole chiaveAlkylation, Cycling efficiency, Cycling stability, Electrolytes, FSI, Graphite, Graphite electrodes, Ionic liquids, Ionization of liquids, Ions, Lithium, Lithium alloys, Lithium batteries, Lithium hexafluorophosphate, Lithium insertion, Lithium salts, Lithium-ion battery, Mixtures, N-Alkyl-N-methylpyrrolidinium, N-propyl, Pyrrolidinium, Room temperature, Room temperature ionic liquids, Specific capacities, System stability, Ternary mixtures, TFSI, Vinylene carbonates
Abstract

In this paper we report the results about the use of ternary room temperature ionic liquid-lithium salt mixtures as electrolytes for lithium-ion battery systems. Mixtures of N-methyl-N-propyl pyrrolidinium bis(fluorosulfonyl) imide, PYR13FSI, and N-butyl-N-methylpyrrolidinium bis(trifluoromethansulfonyl) imide, PYR14TFSI, with lithium hexafluorophosphate, LiPF6 and lithium bis(trifluoromethansulfonyl) imide, LiTFSI, containing 5 wt.% of vinylene carbonate (VC) as additive, have been used in combination with a commercial graphite, KS6 TIMCAL. The performance of the graphite electrodes has been considered in term of specific capacity, cycling efficiency and cycling stability. The results clearly show the advantage of the use of ternary mixtures on the performance of the graphite electrode. © 2009 Elsevier B.V. All rights reserved.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-66349130271&doi=10.1016%2fj.jpowsour.2009.02.066&partnerID=40&md5=ab4ad553e43b51d3f6d20b6466edc85d
DOI10.1016/j.jpowsour.2009.02.066
Citation KeyLux2009606