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Asymmetric ammonium-based ionic liquids as electrolyte components for safer, high-energy, electrochemical storage devices

TitoloAsymmetric ammonium-based ionic liquids as electrolyte components for safer, high-energy, electrochemical storage devices
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2019
AutoriJeong, S., Li S., Appetecchi Giovanni Battista, and Passerini S.
RivistaEnergy Storage Materials
Volume18
Paginazione1-9
ISSN24058297
Parole chiaveAmmonium cations, Bis(fluorosulfonyl)imide, Electrochemical stabilities, Electrochemical storage, Electrolytes, Ionic liquid (ils), Ionic liquids, Mass Spectrometry, Mass spectroscopy, Tetra-alkyl-ammonium, Variable temperature, Virtual storage
Abstract

The synthesis of ionic liquids (ILs), based on the trimethyl-isobuty-ammonium cation, (N111i4)+, and, respectively, the bis(trifluoromethylsulfonyl)imide (TFSI), (fluorosulfonyl) (trifluoromethylsulfonyl)imide (FTFSI), and bis(fluorosulfonyl)imide (FSI) anions is herein reported. The NMR validation of the N111i4Br precursor as well as the ionic liquids is shown. The thermal properties were investigated via variable-temperature, coupled with mass spectroscopy, and isothermal thermo-gravimetrical analyses, and long-thermal tests. The TFSI-based IL exhibits a melting point of 29.93 °C, which is found to be shifted down to −0.12 and −14.32 °C for the FSI- and FTFSI-based samples, respectively. Additionally, the TFSI- and FTFSI-based samples are able to keep in super cooled state for more than one year. The investigated N111i4-based ionic liquids display an electrochemical stability window exceeding 5.5 V. © 2019 Elsevier B.V.

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cited By 0; Article in Press

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85060726577&doi=10.1016%2fj.ensm.2019.01.015&partnerID=40&md5=a2f7f03cb156e6f02287cff3a2981ebd
DOI10.1016/j.ensm.2019.01.015
Citation KeyJeong2019