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Effect Of Nanosized Silica In Poly(methyl Methacrylate)-lithium Bis(trifluoromethanesulfonyl)imide Based Polymer Electrolytes

机译:纳米二氧化硅在聚(甲基丙烯酸甲酯)-双(三氟甲磺酰基)亚胺基锂聚合物电解质中的作用

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摘要

The effect of nanosized silica when incorporated in polymer electrolytes is analyzed by means of Fourier transform infrared (FTIR) spectroscopy, conductivity and thermal properties. Nanocomposite polymer electrolytes are synthesized by the dispersion of nanosized silica (SiO_2), up to 10 wt.% maximum, into a matrix formed by poly(methyl methacrylate) (PMMA) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The highest conductivity is 2.44 × 10~(-6) S cm~(-1) at room temperature, with 4 wt.% of silica added. The FTIR spectra show evidence of complexation between PMMA, LiTFSI and SiO_2. The addition of silica to the polymer electrolytes also improves the thermal stability and the ability to retain conductivity over time.
机译:通过傅立叶变换红外(FTIR)光谱,电导率和热性能分析了纳米二氧化硅在聚合物电解质中的作用。纳米复合聚合物电解质是通过将最大不超过10 wt%的纳米级二氧化硅(SiO_2)分散到由聚甲基丙烯酸甲酯(PMMA)和双(三氟甲磺酰基)酰亚胺锂(LiTFSI)形成的基质中而合成的。室温下最高电导率为2.44×10〜(-6)S cm〜(-1),加入4 wt。%的二氧化硅。 FTIR光谱显示了PMMA,LiTFSI和SiO_2之间络合的证据。将二氧化硅添加到聚合物电解质中还改善了热稳定性和随时间保持电导率的能力。

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