The recent developments of membrane technology that requires the composite membrane to work effectively in high energy devices have prompted the inclusion of graphene (GO) and N-butyltrimethylammonium iodide (IL) into a poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-co-HFP) host polymer. From the characterizations that were conducted using FTIR, SEM, TGA, DSC, universal testing machine, Hot Disk Thermal Constants Analyser and the RF impedance spectroscopy, the IL-filled PVDF-co-HFP membrane (1P/IL) was found to have a better dielectric and thermal conductivity, while the decreased porosity of the 1P/GO membrane was discovered to have contributed to its better mechanical performance. Apart from the moieties, which had filled the gaps of the porous architecture and formed a firmer configuration from the chemical junctions with the PVDF-co-HFP, the IL in the membrane was also observed to have increased the density of the accumulated charge carriers and polarization with a better crystallinity control, porosity and ion transportation of the dielectric constant. Based on the above results, the introduction of an ionic liquid (with its plasticizing effect, well-dispersed assembling and diffusional motions) can thus be regarded as significantly improving the properties of the PVDF-co-HFP and particularly in the hi-tech targeted applications of high energy devices such as those of the high-energy Li-ion batteries.

中文翻译：

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用于高能设备的石墨烯填充与离子液体填充的聚偏二氟乙烯-共-六氟丙烯电解膜：热物理和电化学方面

要求复合膜在高能设备中有效工作的膜技术的最新发展促使石墨烯（GO）和N-丁基三甲基碘化碘（IL）包含在聚偏二氟乙烯-共-六氟丙烯（PVDF- co）中-HFP）主体聚合物。根据使用FTIR，SEM，TGA，DSC，通用测试机，热盘热常数分析仪和RF阻抗谱进行的表征，填充IL的PVDF- co发现-HFP膜（1P / IL）具有更好的介电和导热性，而降低的1P / GO膜的孔隙率则有助于其更好的机械性能。除了填充了多孔结构间隙并从与PVDF- co -HFP的化学键形成更牢固构型的部分之外，还观察到膜中的IL增加了积累的电荷载流子的密度，并且极化具有更好的结晶度控制，孔隙率和离子输运的介电常数。根据以上结果，可以认为引入离子液体（具有增塑作用，良好分散的组装和扩散运动）可以显着改善PVDF-共-HFP，特别是在高科技针对性的高能量装置的应用，如那些高能量的锂离子电池。