Abstract Flexible piezoelectric self-charging supercapacitors (PSCS) are capable of converting random mechanical energy directly into electric energy and providing sustainable power source for various wearable electronic devices. In this work, using PDMS-rGO/C hybrid membrane as the positive and negative electrodes, P(VDF-TrFE) film as the piezoseparator, a flexible and ultralight PSCS was developed to harvest the mechanical energy of human finger curvature and simultaneously store as chemical energy in supercapacitors. The PSCS can be efficiently charged from finger deformation in the presence of polarized P(VDF-TrFE) separator film. When the finger was bended to 90°, the fabricated PSCS achieved a potential window of 0.45 V with the discharging time of about 18.0 s, and a stable charging current of 6.4 μA, providing a promising power solution to the next-generation self-powered wearable electronics system.

中文翻译：

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P(VDF-TrFE)压电隔膜自充电的可穿戴超级电容器

摘要 柔性压电自充电超级电容器（PSCS）能够将随机机械能直接转化为电能，为各种可穿戴电子设备提供可持续的电源。在这项工作中，使用 PDMS-rGO/C 混合膜作为正极和负极，P(VDF-TrFE) 薄膜作为压电隔离器，开发了一种灵活的超轻 PSCS 来收集人类手指弯曲的机械能并同时存储为超级电容器中的化学能。在极化的 P(VDF-TrFE) 隔膜存在的情况下，PSCS 可以通过手指变形有效地充电。当手指弯曲到 90°时，制作的 PSCS 实现了 0.45 V 的电位窗口，放电时间约为 18.0 s，稳定充电电流为 6.4 μA，