In Situ Synthesis Of PEO-Based Composite Solid Polymer Electrolyte

• Main Authors: Bor-Ning Chiou, 邱伯寧
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/00307978419789010611

碩士 === 國立中央大學 === 化學研究所 === 92 === The major challenge of Solid Polymer Electrolytes (SPE) is to achieve fair ionic conductivities at ambient temperature, while maintaining film-forming property. Present study disclosed a unique network structured polymer electrolyte by in-situ polymerize phenolic in PEO solution which is subsequently cross-linked by HMTA to form a mechanical stable freestanding and homogenous film.The structure and PEO crystalline before and after cross-linking、thermal stability、surface morphology、molecular motion ability and state、structure and ion transport are characterized. by DSC、TGA、XRD、SEM、FT-IR、NMR、AC-impedance experiments, respectively. These results show the present in situ composite Solid Polymer electrolytes (in situ CSPE) establish a fair interpenetrating network (IPN) structure with good mechanical properties suitable for general electrolyte applications. The CSPE exhibits lower Tm and Tc than that obtained from blending, which implies the PEO crystallite is well-dispersed and large crystallite is hindered in the confined polymer matrix which results in lowering crystalline of polymer. Due to the unique microstructure, re-crystallization of PEO polymer is not occurring after cross-linking phenolic.