Ionic liquid electrolytes for room temperature sodium battery systems

TitleIonic liquid electrolytes for room temperature sodium battery systems
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2019
AuthorsBrutti, S., Navarra M.A., Maresca G., Panero S., Manzi J., Simonetti E., and Appetecchi Giovanni Battista
JournalElectrochimica Acta
Volume306
Pagination317-326
ISSN00134686
KeywordsBlending, Characterization techniques, Conducting electrolyte, Conductivity measurements, ELectrochemical methods, Electrolytes, Galvanostatic cycling, Ionic liquid electrolytes, Ionic liquids, Linear sweep voltammetry, Physicochemical properties, Secondary batteries, Sodium, Sodium battery, Thermogravimetric analysis
Abstract

Safer electrolytes for ambient temperature sodium batteries were prepared by blending the N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, PYR 14 TFSI, ionic liquid with the sodium bis(trifluoromethylsulfonyl)imide, NaTFSI, salt. The physicochemical as well as the electrochemical properties of the PYR 14 TFSI-NaTFSI binary electrolyte system were investigated as a function of the temperature and sodium salt mole fraction, and compared with those of organic electrolytes of interest for sodium batteries. A plethora of characterization techniques were adopted ranging from density, viscosity and conductivity measurements, thermogravimetry and electrochemical methods (linear sweep voltammetry, transference number, galvanostatic experiments). Preliminary galvanostatic cycling tests were carried out in Na/NaMnO 2 cells at room temperature. The results are presented and discussed in the present paper. © 2019 Elsevier Ltd

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85063622773&doi=10.1016%2fj.electacta.2019.03.139&partnerID=40&md5=48fcf4144eb0a3f4331edee9f99c2c72
DOI10.1016/j.electacta.2019.03.139