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首页> 外文期刊>Journal of Applied Polymer Science >Conductive performances of elastomeric electrolytes based on maleic anhydride-g-poly(1, 2-butadiene) grafting polyethylene glycol 400 and LiClO_4
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Conductive performances of elastomeric electrolytes based on maleic anhydride-g-poly(1, 2-butadiene) grafting polyethylene glycol 400 and LiClO_4

机译：基于马来酸酐-g-聚（1,2-丁二烯）接枝聚乙二醇400和LiClO_4的弹性体电解质的导电性能

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摘要

Elastomeric electrolyte films consisting of maleic anhydride-g-poly (1, 2-butadiene) (MAPB) grafting polyethylene glycol 400 (PEG_(400)) as matrix and LiClO_4 as alkali salt at the mole ratio of [O]: [Li~+] at 6, 8, and 10, respectively are prepared. An equivalent circuit is proposed based on the electronic impedance spectroscopy plots by using the metal/electrolyte film/metal model, the simulant plots are found matched well with the tested plots, and the conductivity variations with salt concentrations and temperatures are calculated accordingly. The film with the mole ratio of [O]: [Li~+] at 8:1 exhibits higher conductivity at room temperature, due to its relatively stronger dissociation of oxygen atom to LiClO_4 as supported by the FTIR spectroscopy. Their conductivity dependent on temperatures obeys the Arrhenius equation from 303 to 363 K, while it keeps almost unchanged at higher temperatures; these changes are found associate with the strong complexation of oxygen atom with Li+ and the state transference of MAPB elastomer as observed by the DSC analysis. Besides, these films are still thermally stable at around 200°C as observed by the TGA analysis and may be promising solid polymer electrolytes with high stability.
机译：由马来酸酐-g-聚（1,2-丁二烯）（MAPB）接枝以聚乙二醇400（PEG_（400））为基质和LiClO_4为碱盐的摩尔比为[O]：[Li〜]的弹性电解质膜+]分别在6、8和10处准备。利用金属/电解质膜/金属模型，基于电子阻抗谱图提出了等效电路，发现模拟图与测试图匹配良好，并据此计算出电导率随盐浓度和温度的变化。摩尔比为[O]：[Li〜+]为8：1的薄膜在室温下表现出更高的电导率，这是由于FTIR光谱法证明其相对较强的氧原子与LiClO_4的解离作用。它们的电导率取决于温度，从303到363 K遵守Arrhenius方程，而在较高温度下几乎保持不变;发现这些变化与通过DSC分析观察到的氧原子与Li +的强络合以及MAPB弹性体的状态转移有关。此外，如通过TGA分析所观察到的，这些膜在200℃左右仍是热稳定的，并且可能是具有高稳定性的有希望的固体聚合物电解质。

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