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首页> 外文期刊>Journal of Applied Polymer Science >Enhanced mechanical strength and conductivity of PVFM based membrane and its supporting polymer electrolytes
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Enhanced mechanical strength and conductivity of PVFM based membrane and its supporting polymer electrolytes

机译：增强PVFM基膜及其支持的聚合物电解质的机械强度和电导率

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Polyvinyl formal based polymer electrolyte membranes are prepared via the optimized phase inversion method with poly(ethylene oxide) (PEO) blending. The physical properties of blend membranes and the electrochemical properties of corresponding gel polymer electrolytes (GPEs) are characterized by field emission scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, mechanical strength test, electrolyte uptake test, AC impedance spectroscopy, cyclic voltammetry, and galvanostatic chargedischarge test. The comparative study shows that the appearance of PEO obviously enhances the tensile strength of membranes and the ionic conductivity of corresponding GPEs. When the weight ratio of PEO is 30%, the tensile strength of membrane achieves 12.81 MPa, and its GPE shows high ionic conductivity of 2.20 x 10(-3) S cm(-1), wide electrochemical stable window of 1.9-5.7 V (vs. Li/Li+), and good compatibility with LiFePO4 electrode. (C) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41839.
机译：聚乙烯醇缩甲醛基聚合物电解质膜是通过优化的相转化方法与聚环氧乙烷（PEO）共混制备的。通过场发射扫描电子显微镜，X射线衍射，差示扫描量热法，机械强度测试，电解质吸收测试，交流阻抗谱，循环伏安法表征共混膜的物理性能和相应的凝胶聚合物电解质（GPE）的电化学性能，并进行恒电流充电测试。对比研究表明，PEO的出现明显增强了膜的拉伸强度和相应GPE的离子电导率。当PEO的重量比为30％时，膜的拉伸强度达到12.81 MPa，其GPE的离子电导率为2.20 x 10（-3）S cm（-1），电化学稳定窗口宽为1.9-5.7 V （相对于Li / Li +），并与LiFePO4电极具有良好的兼容性。 （C）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41839。

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