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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Thermal, vibrational and Ac impedance studies on proton conducting polymer electrolytes based on poly(vinyl acetate)
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Thermal, vibrational and Ac impedance studies on proton conducting polymer electrolytes based on poly(vinyl acetate)

机译：基于聚醋酸乙烯酯的质子传导聚合物电解质的热，振动和交流阻抗研究

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摘要

Proton conducting polymer electrolytes based on poly(vinyl acetate) (PVAc) and perchloric acid (HClO _4) have been prepared by solution casting technique with various compositions. The X-ray diffraction analysis confirms the polymer-HClO _4 complex formation. FTIR spectra analysis reveals the interaction between proton and ester oxygen of poly(vinyl acetate) (PVAc). The shift in T _g towards the lower temperature indicates that the polymer salt interaction takes places in the amorphous phase of the polymer matrix. Ac impedance spectroscopy reveals that 75 mol% PVAc:25 mol% HClO _4 exhibits maximum conductivity, 3.75 × 10 ~(- 3) S cm ~(- 1) at room temperature (303 K). The increase in conductivity with increase in dopant concentration and temperature may be attributed to the enhanced mobility of the polymer chains, number of charge carriers and rotations of side chains. The temperature dependence of conductivity shows non-Arrhenius behavior at higher temperatures.
机译：已经通过溶液流延技术以各种组成制备了基于聚乙酸乙烯酯（PVAc）和高氯酸（HClO_4）的质子传导聚合物电解质。 X射线衍射分析证实了聚合物-HClO_4配合物的形成。 FTIR光谱分析揭示了质子与聚乙酸乙烯酯（PVAc）的酯氧之间的相互作用。 T _g向较低温度的移动表明聚合物盐相互作用发生在聚合物基质的非晶相中。交流阻抗谱显示，在室温（303 K）下，75摩尔％PVAc：25摩尔％HClO_4表现出最大的电导率，为3.75×10〜（-3）S cm〜（-1）。随着掺杂剂浓度和温度的增加，电导率的增加可以归因于聚合物链的迁移率提高，电荷载流子的数量和侧链的旋转。电导率的温度依赖性在较高温度下显示出非阿累尼乌斯行为。

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