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首页> 外文期刊>Journal of Applied Polymer Science >High performance electrospun PVdF-HFP/SiO2 nanocomposite membrane electrolyte for Li-ion capacitors
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High performance electrospun PVdF-HFP/SiO2 nanocomposite membrane electrolyte for Li-ion capacitors

机译：高性能ElectROFUN PVDF-HFP / SiO2纳米复合材料锂离子电容器电解质

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摘要

Electrospun poly[(vinylidene fluoride)-co-hexafluoropropylene]/silica (PVdF-HFP/SiO2) nanocomposite polymer membranes (esCPMs) were prepared by incorporating different weight percentages of SiO2 nanoparticles onto electrospun PVdF-HFP by electrospinning technique. The surface morphology of electrospun PVdF-HFP nanocomposite membranes was characterized by scanning electron microscopy. The effect of SiO2 nanoparticles incorporation onto electrospun PVdF-HFP polymer membranes (esPMs) has been studied by XRD, DSC, TGA, and tensile analysis. The electrospun PVdF-HFP/SiO2 based nanocomposite membrane electrolytes (esCPMEs) were prepared by soaking the corresponding esCPMs into 1 M LiPF6 in EC:DMC (1:1 vol/vol %). The ionic conductivity of the esCPMEs was studied by AC-impedance studies and it was found that the incorporation of SiO2 nanoparticles into PVdF-HFP membrane has improved the ionic conductivity from 1.320 x 10(-3) S cm(-1) to 2.259 x 10(-3) S cm(-1). The electrochemical stability of the esCPME was studied by linear sweep voltammetry studies and it was found to be 2.87 V. Finally, a prototype LiCo0.2Mn1.8O4//C Li-ion capacitor (LIC) cell was fabricated with esCPME, which delivered a discharge capacitance of 128 F g(-1) at the current density of 1 A g(-1) and retained 86% of its discharge capacitance even after 10,000 cycles. These results demonstrated that the esCPMEs could be used as promising polymer membrane electrolyte for LICs. (C) 2017 Wiley Periodicals, Inc.
机译：通过静电纺丝技术将SiO 2纳米颗粒的不同重量百分比掺入电纺技术上，通过静电纺丝技术将不同的重量百分比掺入电纺出来的PVDF-HFP中来制备静电纺 - 己氟丙烯] /二氧化硅（PVDF-HFP / SiO 2）纳米复合材料聚合物膜（ESCPMS）。通过扫描电子显微镜表征ElectromeTHPVDF-HFP纳米复合膜的表面形态。通过XRD，DSC，TGA和拉伸分析研究了SiO2纳米颗粒掺入ElectromatPVDF-HFP聚合物膜（ESPMS）上的影响。通过将相应的ESCPMS浸泡成12个EC：DMC（1：1 Vol / Vol％），通过将相应的ESCPMS浸泡成1 m Lipf6来制备电纺器PVDF-HFP / SiO 2的纳米复合材料膜电解质（ESCPMES）。所述esCPMEs的离子电导率，研究了AC-阻抗研究和发现，纳米SiO2掺入的PVdF-HFP膜具有改善的离子电导率从1.320×10（-3）S厘米（-1）到2.259 X 10（-3）厘米（-1）。所述esCPME的电化学稳定性通过线性扫描伏安法研究的研究并且发现是2.87 V.最后，一个原型LiCo0.2Mn1.8O4 // C锂离子电容器（LIC）细胞用esCPME，它发表了制造在电流密度为1Ag（-1）的电流密度的放电电容，即使在10,000个循环之后也保留了其放电电容的86％。这些结果表明，ESCPME可以用作LICs的有前途的聚合物膜电解质。 （c）2017 Wiley期刊，Inc。

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