Abstract
The influences of nano-Al2O3 on the phase structure and conductivity of PEO/LiCF3SO3 polymer electrolyte complex are discussed in this work. The addition amount of Al2O3 is 0-30wt%. The phase structure of the complex shows complicated changes with the addition of Al2O3. The crystallinity of the complex first decreases when Al2O3 content less than 15wt% then increases when Al2O3 content more than 15wt%. As the addition amount of Al2O3 is 15wt%, the 13C NMR signals from PEO3/LiCF3SO3 crystalline complex and neat crystalline PEO can hardly be seen. The complex obtains the highest ionic conductivity at room temperature when the content of Al2O3 is 15wt% (3.822x10-5 S/cm).
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