Solid polymer electrolytes VIII: Effect of LiClO4-doped level on the microstructure and ionic conductivity of a chemical-covalently polyether-siloxane hybrid electrolyte

Wuu Jyh Liang, Ping Lin Kuo

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17 引文 斯高帕斯(Scopus)

摘要

A new hybrid polymer electrolyte system based on chemical-covalently polyether and siloxane phases is designed and prepared in the presence of lithium perchlorate (LiClO4) which acted as both ionic source and the epoxide ring-opening catalyst. The effect of salt-doped level on the microstructure and ionic conductivity of these composite electrolytes were investigated by means of Fourier transform infra-red spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis, a.c. impedance and multinuclear solid-state nuclear magnetic resonance measurements. DSC results indicate that the formation of transient cross-links between Li+ ions and the ether oxygens on complexation with LiClO4 results in an increase in polyether segment Tg. However, the polyether segment Tg decreases at the highest salt concentration (5.0 mmol LiClO 4/g PEGDE), ascribing to the plasticizing effect. The behavior of ion transport is coupled with the segmental motions of polymer chains and also correlated with the interactions between ions and polymer host.

原文English
頁(從 - 到)1617-1626
頁數10
期刊polymer
45
發行號5
DOIs
出版狀態Published - 2004 三月

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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