A nanocomposite polymer gel electrolyte (NCPGE) has been synthesized from polyvinylidene fluoride co-hexafluoropropylene (PVDF-HFP) as the host polymer, ethylene carbonate (EC)/propylene carbonate (PC) as plasticizers, and tetraethylammonium tetrafluoroborate (TEABF₄) as an ionic salt by a solution-casting technique, followed by the addition of Al₂O₃ nanoparticles. The optimal loading of Al₂O₃ giving the highest ionic conductivity of 6.0 × 10⁻³ S cm⁻¹ was found to be 18 wt%. An activation energy of 0.107 eV has been calculated from a temperature-dependent conductivity plot, which shows Arrhenius behavior. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared (FTIR) characterizations have been applied to investigate the morphology and structure. The semi-crystalline and porous nature of the NCPGE has been confirmed by SEM and XRD analyses. The ionic transference number was calculated as 0.98 by the DC polarization technique, confirming the dominant ionic nature of the prepared electrolyte. The electrochemical potential window of the NCPGE of about 3.4 V, as estimated by linear sweep voltammetry, makes it suitable for supercapacitor applications.

纳米复合聚合物凝胶电解质（NCPGE）是由聚偏二氟乙烯共六氟丙烯（PVDF-HFP）作为主体聚合物，碳酸亚乙酯（EC）/碳酸亚丙酯（PC）作为增塑剂以及四乙基四氟硼酸铵（TEABF ₄）合成的。溶液浇铸技术制备离子盐，然后添加Al ₂ O ₃纳米颗粒。Al ₂ O ₃的最佳负载可提供最高的离子电导率6.0×10 ^-3  S cm ^-1被发现为18重量％。根据与温度相关的电导率曲线计算得出的活化能为0.107 eV，该曲线显示了阿累尼乌斯行为。扫描电子显微镜（SEM），X射线衍射（XRD）和傅立叶变换红外（FTIR）表征已用于研究形态和结构。NCPGE的半结晶和多孔性质已通过SEM和XRD分析得到证实。通过DC极化技术将离子转移数计算为0.98，证实了所制备的电解质的主要离子性质。通过线性扫描伏安法估计，NCPGE的电化学电势窗口约为3.4 V，使其适用于超级电容器应用。