Rapid advancements in wearable electronics impose the challenge on power supply devices. Herein, a flexible single-electrode triboelectric nanogenerator (SE-TENG) that enables both human motion sensing and biomechanical energy harvesting is reported. The SE-TENG is fabricated by interpenetrating Ag-coated polyethylene terephthalate (PET) nanofibers within a polydimethylsiloxane (PDMS) elastomer. The Ag coating and PDMS are performed as the electrode and dielectric material for the SE-TENG, respectively. The Ag-coated PET nanofibers enlarge the electrode surface area, which is beneficial to increase sensing sensitivity. The flexible SE-TENG sensor shows the capability of outputting alternating electrical signals with an open-circuit voltage up to 50 V and a short-circuit current up to 200 nA in response to externally applied pressure. It is used to sense various types of human motions and harvest electric energy from body motion. The harvested energy can successfully power wearable electronics, such as an electronic watch and light-emitting diode. Therefore, the as-prepared SE-TENG sensor with a pressure response and self-powered capability provides potential applications in wearable sensors or flexible electronics for personal healthcare and human–machine interfaces.

中文翻译：

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一种受皮肤启发的具有互穿结构的摩擦纳米发电机，用于运动传感和能量收集

可穿戴电子设备的快速发展给电源设备带来了挑战。本文报道了一种灵活的单电极摩擦纳米发电机 (SE-TENG)，它可以实现人体运动传感和生物力学能量收集。SE-TENG 是通过在聚二甲基硅氧烷 (PDMS) 弹性体中互穿涂银的聚对苯二甲酸乙二醇酯 (PET) 纳米纤维制成的。Ag 涂层和 PDMS 分别作为 SE-TENG 的电极和介电材料。Ag涂层的PET纳米纤维增大了电极表面积，有利于提高传感灵敏度。灵活的 SE-TENG 传感器能够输出交流电信号，开路电压高达 50 V，短路电流高达 200 nA，以响应外部施加的压力。它用于感知各种类型的人体运动并从身体运动中获取电能。收集到的能量可以成功地为可穿戴电子设备供电，例如电子手表和发光二极管。因此，所制备的具有压力响应和自供电能力的 SE-TENG 传感器在可穿戴传感器或用于个人医疗保健和人机界面的柔性电子产品中提供了潜在的应用。