Today’s techno savvy world demands smart devices which are light-weight, flexible, and scalable. Functional polymers and their composites are suitable candidates that can fulfill the requirements in flexible device applications. Polyvinylidene fluoride (PVDF) is one kind of functional polymers possessing a large dielectric strength as well as permanent electrical dipole. To improve the dielectric and ferroelectric performance of the PVDF polymer, it can be hybridized with an inorganic/organic inclusion phase, usually ferroelectric ceramic particles or nano-sized low dimensional carbon. In this work, reduced- graphene oxide (RGO) and RGO-PANI were chosen as the inclusion phase (filler). The present work focuses towards enhancing the dielectric and ferroelectric properties of PVDF-BaTiO₃ (P/BT) nanocomposites impregnated with RGO and RGO/PANI(Polyaniline) nanofillers. In-situ polymerization method was adapted to fabricate the RGO/PANI nanocomposite and spin coating method for P/BT composites. X-ray diffractograms and FTIR corroborate the presence of ferroelectric phases in P/BT matrix. Wayne Kerr precision impedance analyzer was used in the frequency frame of 1 Hz to 1 MHz and temperature window from 30 °C to 160 °C to study the dielectric properties. The P-E hysteresis loops were obtained using Radiant Ferroelectric Tester at different voltage cycles. The dielectric constant of P/BT matrix with 0.03% RGO loading exhibited the highest dielectric constant 2 × 10⁵. Remarkable increase in the energy density of composites with filler loading was observed. P/BT with 1 wt% loading of RGO-PANI achieved the maximum value of polarization 3.6 µC/cm² and discharge energy density 0.76 J/cm³ (under the electric field of 170 kV/cm) with 55% efficiency. This contribution provides a potential route to design and fabricate high energy density flexible capacitor for microelectronic devices.

当今精通技术的世界需要重量轻、灵活且可扩展的智能设备。功能性聚合物及其复合材料是可以满足柔性设备应用要求的合适候选者。聚偏二氟乙烯（PVDF）是一种具有较大介电强度和永久电偶极子的功能性聚合物。为了提高 PVDF 聚合物的介电和铁电性能，它可以与无机/有机夹杂相混合，通常是铁电陶瓷颗粒或纳米级低维碳。在这项工作中，还原氧化石墨烯 (RGO) 和 RGO-PANI 被选为夹杂物相（填料）。目前的工作重点是提高 PVDF-BaTiO ₃的介电和铁电性能(P/BT) 纳米复合材料浸渍了 RGO 和 RGO/PANI（聚苯胺）纳米填料。采用原位聚合法制备 RGO/PANI 纳米复合材料和旋涂法制备 P/BT 复合材料。X 射线衍射图和 FTIR 证实了 P/BT 基质中存在铁电相。在 1 Hz 至 1 MHz 的频率范围和 30 °C 至 160 °C 的温度窗口中使用 Wayne Kerr 精密阻抗分析仪来研究介电特性。PE 磁滞回线是使用 Radiant Ferroelectric Tester 在不同电压周期下获得的。RGO 负载量为 0.03% 的 P/BT 基体的介电常数表现出最高的介电常数 2 × 10 ⁵. 观察到填充填料的复合材料的能量密度显着增加。具有 1 wt% 负载的 RGO-PANI 的 P/BT 实现了最大极化值 3.6 µC/cm ²和放电能量密度 0.76 J/cm ³（在 170 kV/cm 电场下），效率为 55%。这一贡献为设计和制造用于微电子设备的高能量密度柔性电容器提供了一条潜在途径。