高分子奈米複合電解質之製備與其性質研究

Preparation and Property Studies on Polymer-Clay Nanocomposite Electrolyte

李志星(Chih-Hsing Li)

指導教授 ： 葉瑞銘

中原大學/理學院/化學系/碩士(2006年)

https://doi.org/10.6840/cycu200600372

摘要

高分子電解質目前的研究方向主要集中在摻和不同的化合物、鹽類或無機奈米材料，本論文主要利用高分子聚氧化乙烯( Poly(ethylene oxide) , PEO ) 和鈉型蒙脫土( Na＋-Montmorillonite , PK-802 Clay )製成有機/無機混成奈米級高分子電解質複合材料( PEO / Clay )，並探討無機層狀材料的添加對高分子電解質熱安定性( Thermal Stability )、結晶性( Crystallinity ) 之影響。 並藉由穿透式電子顯微鏡( TEM )、X-ray 繞射儀來檢測整個奈米級高分子電解質複合材料之型態結構並進行分析。 此外，並藉由一連串導電度測試來分析添加鹽類或無機奈米材料對高分子電解質的性質影響程度為何，藉此發展出傳導性質及機械性質均佳的高分子電解質薄膜，而期待能實際運用於高分子電池上。

關鍵字

高分子電池 ； 蒙脫土 ； 奈米複合材料

並列摘要

Abstract
Nanocomposite has demonstrated effectively to improve the mechanical properties of various polymers. Clay to improve solid polymer electrolyte (SPE) has also been reported. However, the specific role of the clay in presence of the salt to the ion conductivity has never been clearly identified, apart from hand-waving speculations. In this research, clay has been found helpful in reserving the solid polymer electrolyte. The composite polymer electrolytes have been prepared based on poly (ethylene oxide) (PEO) with alkali metal salt (LiClO4) blending with clay. The X-ray diffraction and DSC、TGA studies reveal the crystallization of PEO is reduced with increasing the content of LiClO4. From the AC-impedance measurements, the highest conductivity of PEO-LiClO4-EC/DEC/PC with 3 wt.% Clay is found to be 10–3 Scm-1 at room temperature.

並列關鍵字

electrolyte ； clay ； nanocomposites

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