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- W1980595445 abstract "본 연구에서는 poly(ethylene oxide) (PEO)와 poly(methyl methacrylate) (PMMA) 블렌드를 고분자 매트릭스(matrix)로 사용하고, 가소제로propylene carbonate (PC), 리튬염인 <TEX>$LiClO_4$</TEX>, 그리고 서로 다른 함량의 세라믹 필러인 <TEX>$TiO_2$</TEX>를 이용하여 용액 캐스팅(solution casting)법에 의해 고분자 복합체 전해질 필름을 제조하였다. 고분자 전해질의 결정화도와 이온전도도는 각각, X선 회절분석기(XRD)와 AC임피던스법을 통해 분석하였고, 표면 형태학(morphology)을 조사하기 위해 주사전자현미경(SEM)으로 고찰하였다. 그 결과, <TEX>$TiO_2$</TEX>의 함량을 증가시킴으로써 PEO의 결정화 영역이 감소하였고, 이온전도도는 증가하였다. 특히 <TEX>$TiO_2$</TEX>의 함량이 15 wt%일 때 가장 높은 이온전도도가 관찰된 반면, 15 wt% 이상을 첨가한 경우, 이온전도도가 감소된 경향을 관찰할 수 있었다. 이는 표면 형태학를 통해 고분자와 필러간의 비혼합성 혹은 필러응집에 의해 불균일적인 형태학이 나타남으로써 이온전도도가 감소하는 현상을 확인할 수 있었다. In this work, polymer composite electrolytes were prepared by a blend of poly(methyl methacrylate) (PMMA) and poly(ethylene oxide) (PEO) as a polymer matrix, propylene carbonate as a plasticizer, <TEX>$LiClO_4$</TEX> as a salt, and by containing a different content of <TEX>$TiO_2$</TEX>, by using the solution casting method. The crystallinity and ionic conductivity of the polymer electrolytes was evaluated using X-ray diffraction(XRD) and AC impedance method, respectively. The morphology of composite electrolyte film was analyzed by SEM method. From the experimental results, by increasing the <TEX>$TiO_2$</TEX> content, crystallinity of PEO was reduced, and ionic conductivity was increased. In particular, the ionic conductivity was dependent on the content of <TEX>$TiO_2$</TEX> and showed the highest value 15 wt%. However, when <TEX>$TiO_2$</TEX> content exceeds 15 wt%, the ionic conductivity was decreased. According to the surface morphology, the ionic conductivity was decreased because the polymer composite electrolytes showed a heterogenous morphology of fillers due to immiscibility or aggregation of the filler within the polymer matrix." @default.
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- W1980595445 date "2011-12-01" @default.
- W1980595445 modified "2023-09-24" @default.
- W1980595445 title "Study on Ionic Conductivity and Crystallinity of PEO/PMMA Polymer Composite Electrolytes containing TiO2Filler" @default.
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- W1980595445 doi "https://doi.org/10.9713/kcer.2011.49.6.758" @default.
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