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Preparation and Characterization of PVDF-HFP/MG49 Based Polymer Blend Electrolyte

机译:PVDF-HFP / MG49基聚合物共混电解质的制备与表征

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Solid polymer electrolytes comprising poly (vinylidene fluoride-hexafluoro propylene) (PVDF-HFP),Poly (methyl methacrylate)-grafted natural rubber (MG49) and lithium salt (LiBF4) were prepared bysolution casting technique. The membranes were characterized by impedance spectroscopy (EIS),fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD) and scanning electron4microscopy (SEM). The electrolyte exhibited the highest room temperature conductivity 2.810藟 S-1cm at 30 wt. % of LiBF4. The conductivity increases with temperature but it does not obey Arrheniusrule. The interaction between lithium ions and polymer host was confirmed by fourier transforminfrared spectroscopy. The XRD result confirmed that adding salt led to decrease the degree ofcrystallinity. The SEM studies showed that the morphology improved in the presence of the salt.
机译:通过溶液浇铸技术制备了包括聚偏二氟乙烯-六氟丙烯(PVDF-HFP),聚(甲基丙烯酸甲酯)接枝的天然橡胶(MG49)和锂盐(LiBF4)的固体聚合物电解质。通过阻抗谱(EIS),傅立叶变换红外光谱(FTIR),X射线衍射(XRD)和扫描电子显微镜(SEM)对膜进行表征。电解质在30 wt。%时表现出最高的室温电导率2.810藟S-1cm。 LiBF 4的百分比。电导率随温度升高而增加,但不服从大地膜。锂离子与聚合物主体之间的相互作用已通过傅立叶变换红外光谱法得以证实。 XRD结果证实添加盐导致结晶度降低。 SEM研究表明,在盐的存在下形态得到改善。

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