一种用于运动传感和能量收集的具有互穿结构的皮肤感应型摩擦电纳米发电机

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.(#br)A flexible single‐electrode triboelectric nanogenerator (SE‐TENG) is fabricated by interpenetrating Ag coated nanofibers within a polydimethylsiloxane elastomer. The SE‐TENG shows the ability to harvest biomechanical energy and generate electric energy, which allows the sensor to sense human motion or as a wearable power supply. The harvested energy could be stored in commercial capacitors to power LED and an electronic watch.