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首页> 外文期刊>Journal of power sources >The effect of nanosized TiO_2 addition on poly(methylmethacrylate) based polymer electrolytes
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The effect of nanosized TiO_2 addition on poly(methylmethacrylate) based polymer electrolytes

机译:纳米TiO_2添加对聚(甲基丙烯酸甲酯)基聚合物电解质的影响。

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摘要

The electrochemical, X-ray diffraction, thermal, Theological and spectroscopic studies have been carried out to examine the effect of nanosized TiO_2 addition in different concentration to polymethylmethacrylate (PMMA) based gel polymer electrolytes (GPE). This work demonstrates that with optimum concentration of TiO_2 loadings in GPE, the ionic conductivity enhances with negligible effect on other electrochemical properties. The obtained ionic conductivity value is >10~(-3) S cm~(-1). An increase in viscosity by an order of magnitude is obtained which also restricts the flow property of GPE. The addition of TiO_2 retains the amorphicity of the GPE while the T_g increases. Enhanced mechanical stability of these composite polymer electrolytes (CPEs) with solid-like behavior is evident from their appearance. The activation energy has been calculated by fitting the conductivity profile in VTF equation, which decreases on the addition of fillers. FTIR characterization also confirms the interaction of filler with C=O of PMMA. The capabilities and properties exhibited by these CPEs will be of immense interest for electrochemists to use them in solid-state devices.
机译:进行了电化学,X射线衍射,热学,神学和光谱学研究,以研究以不同浓度向基于聚甲基丙烯酸甲酯(PMMA)的凝胶聚合物电解质(GPE)中添加纳米级TiO_2的影响。这项工作表明,在GPE中TiO_2的最佳负载浓度下,离子电导率的提高对其他电化学性能的影响可忽略不计。所获得的离子电导率值> 10〜(-3)S cm〜(-1)。粘度增加了一个数量级,这也限制了GPE的流动性。 TiO_2的添加保留了GPE的非晶性,而T_g增加。这些复合聚合物电解质(CPE)具有类似固体的性能,从其外观来看,机械稳定性增强。通过将电导率分布拟合为VTF方程来计算活化能,该电导率随添加填料而降低。 FTIR表征还证实了填料与PMMA的C = O相互作用。这些CPE表现出的功能和特性将对电化学家将其用于固态设备非常感兴趣。

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