An air-cushion triboelectric nanogenerator integrated with stretchable electrode for human-motion energy harvesting and monitoring. (November 2018)

• Record Type: Journal Article
• Authors: Zhang, Zengxing; Du, Kang; Chen, Xi; Xue, Chenyang; Wang, Kaiying
• Is Part Of: Nano energy. Volume 53(2018)
• Page Start: 108
• Page End: 115
• Publication Date: 2018-11
• Subjects: Triboelectric nanogenerator -- Air cushion -- Stretchable electrode -- Human-motion energy -- Motion monitoring; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2018.08.011
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Harvesting energy from human-motion can be a viable solution for developing self-powered wearable and portable electronic devices. This work presents an air-cushion triboelectric nanogenerator (ACTNG) which is entirely made of stretchable materials. ACTNG can efficiently harvest mechanical energy from intense movements like walking, running and jumping without any ambient influence. Systematic testing of different parameters like diameter (20–60 mm), frequency (1–5 Hz), and applied force (20–60 N), reveals an optimal peak power density of 44.6 mW m −2 . The output performance is further validated by charging commercial capacitors, lighting LEDs, and operating as a power supply for a scientific calculator and digital thermometer. In addition, this device can operate as a human motion sensor with a detection sensitivity of 33.8 μA MPa −1 for instantaneous force. This device has potential for a wide range of applications in biocompatible, wearable, and smart sensing technologies. Graphical abstract: An air-cushion triboelectric nanogenerator is developed to harvest human-motion energy and monitor three movements-normal walking, running and jumping. Upon using fully sealed structure and stretchable electrode, an optimal power density of 44.6 mW m -2 is achieved to power electronics. A force detecting sensitivity of 33.8 μA Mpa -1 applies to motion recognition. fx1 Highlights: An air-cushion triboelectric nanogenerator integrated with stretchable electrode is proposed. A stretchable device, which is especially for intense human-motion energy harvesting and monitoring, is demonstrated. The high detection sensitivity and high output performance of this motion sensor are proved.