Abstract Graphene aerogel/PVDF (GA/PVDF) composites with a three-dimensional structure were prepared using a vacuum-assisted impregnation process. The phase structure, morphology and piezoelectric properties have been systematically studied. The results show that GA/PVDF composites have good piezoelectric output characteristics and can provide corresponding feedback according to the magnitude and frequency of the acting force. When the PVDF concentration is 80 mg/mL, the GA/PVDF composite reaches the highest piezoelectric constant (d33 = 16 pC/N). The average peak output current is approximately 0.51 μA and shows good stability under repeated pressing. It is promising to apply to the field of flexible pressure sensors that can be self-powered.

中文翻译：

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用于柔性压电纳米发电机的超轻石墨烯气凝胶/PVDF复合材料

摘要 采用真空辅助浸渍工艺制备了具有三维结构的石墨烯气凝胶/PVDF（GA/PVDF）复合材料。系统地研究了相结构、形貌和压电性能。结果表明，GA/PVDF复合材料具有良好的压电输出特性，可以根据作用力的大小和频率提供相应的反馈。当 PVDF 浓度为 80 mg/mL 时，GA/PVDF 复合材料达到最高的压电常数 (d33 = 16 pC/N)。平均峰值输出电流约为 0.51 μA，在反复按压下显示出良好的稳定性。有望应用于可自供电的柔性压力传感器领域。