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TitleSol-gel derived Li+-doped poly(ε-caprolactone)/siloxane biohybrid electrolytes
Author(s)Nunes, Sílvia
Zea Bermudez, V. de
Silva, Maria Manuela
Smith, Michael John
Morales, Enrique
Carlos, Luís
Ferreira, R. A. Sá
Rocha, João
Poly(e-caprolactone)/siloxane hybrid
Ionic conductivity
Thermal stability
poly(epsilon-caprolactone)/siloxane hybrid
Poly(ε-caprolactone)/siloxane hybrid
Issue date2006
JournalJournal of Solid State Electrochemistry
Abstract(s)Electrolytes based on a poly(ε-caprolactone) (PCL)/siloxane organic/inorganic host framework doped with lithium triflate (LiCF3SO3) were synthesised through the sol-gel process. In this biohybrid matrix short PCL chains are covalently bonded via urethane linkages to the siliceous network. Samples with salt composition n (molar ratio of PCL repeat units per Li+ ion) ranging from ∞ to 0.5 were investigated. All the ormolyte materials analysed are amorphous. Xerogels with n > 0.5 are thermally stable up to about 300°C. The most conducting ormolyte of the series is that with n = 0.5 (1.6×10−7 and 3.2×10−5 Ω−1 cm−1 at 25 and 100°C, respectively). This sample is electrochemically stable between −1 and 6 V versus Li+.
Publisher versionThe original publication is available at (DOI 10.1007/s10008-005-0651-0)
AccessOpen access
Appears in Collections:CDQuim - Artigos (Papers)

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