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Novel polymeric systems for lithium ion batteries gel electrolytes: II. Hybrid cross-linked poly(fluorosilicone-ethyleneoxide)

TitoloNovel polymeric systems for lithium ion batteries gel electrolytes: II. Hybrid cross-linked poly(fluorosilicone-ethyleneoxide)
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2005
AutoriAppetecchi, Giovanni Battista, Alessandrini F., Passerini S., Caporiccio G., Boutevin B., and Guida-Pietrasanta F.
RivistaElectrochimica Acta
Volume50
Paginazione4396-4404
ISSN00134686
Parole chiaveCross linked membranes, Electric batteries, Electrolytes, Fluorine containing polymers, Gel polymer electrolytes, Ionic conduction, Ions, Lithium, Organic solvents, Polyethylene oxides, Polyfluorosilicone, Polymer blends, Polysilicones, Silica, Silicones, Thin films
Abstract

Cross-linked, self-supporting, membranes for lithium ion battery gel electrolytes were obtained by cross-linking a mixture of polyfluorosilicone (PFSi) and polysilicone containing ethylene oxide (EO) units [P(Si-EO)]. The membranes were also reinforced with nanosized silica. The two polymer precursors were synthesized with functional groups capable to form inter-molecular cross-linking, thus obtaining three-dimensional, polymer matrices. The precursors were dissolved in a common solvent and cross-linked to obtain free-standing PFSi/P(Si-EO):SiO2 composite films. The latter were undergone to swelling processes in (non-aqueous, aprotic, lithium salt containing) electrolytic solutions to obtain gel-type polymer electrolytes. The properties of the swelled PFSi/P(Si-EO):SiO2 samples were evaluated as a function of the electrolytic solutions and the dipping time. The PFSi/P(Si-EO):SiO2 membranes exhibited large swelling properties, high ionic conductivity and good electrochemical stability. © 2005 Elsevier Ltd. All rights reserved.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-23144451003&doi=10.1016%2fj.electacta.2005.02.003&partnerID=40&md5=2dca69b48dd72a202cd4bb39739c2d6e
DOI10.1016/j.electacta.2005.02.003
Citation KeyAppetecchi20054396