6533b831fe1ef96bd1299b1b

RESEARCH PRODUCT

MCM-41 silica effect on gel polymer electrolytes based on thermoplastic polyurethane

Rodrigo L. LavallEliana QuartaroneMaurizio FagnoniPiercarlo MustarelliM. MarzantowiczMaria Luisa SaladinoStefania FerrariCorrado Tomasi

subject

Thermogravimetric analysisMCM-41 mesoporous silicaMaterials scienceGeneral Chemical EngineeringLithium batterieThermoplastic polyurethaneImpedance spectroscopyElectrolyteLithium batteries Thermoplastic polyurethane Ionic liquid MCM-41 mesoporous silica Impedance spectroscopyIonic liquidMesoporous silicaDielectric spectroscopyThermoplastic polyurethanechemistry.chemical_compoundDifferential scanning calorimetryLithium batterieschemistryChemical engineeringIonic liquidPropylene carbonatePolymer chemistryElectrochemistrySettore CHIM/02 - Chimica Fisica

description

Abstract Polymer electrolytes were prepared from thermoplastic polyurethane with addition of mixture of N-ethyl(methylether)-N-methylpyrrolidinium trifluoromethanesulfonimide (PYRA12O1TFSI) ionic liquid, lithium bis(trifluoromethanesulfoneimide) salt and propylene carbonate. MCM-41 mesoporous silica was added in proportions ranging from 5 to 20 wt.% with respect to TPU. The electrolytes were characterized by thermogravimetric analysis, differential scanning calorimetry, linear voltammetry and impedance spectroscopy. The MCM-41 addition to the system was found to improve the electrochemical stability of the membranes and to reduce the gel electrolyte/metallic Li interfacial resistance. The filler influence on the ion transport processes was discussed according to results obtained by equivalent circuit fitting of impedance spectra.

yearjournalcountryeditionlanguage
2012-01-01Electrochimica Acta
https://doi.org/10.1016/j.electacta.2011.11.073