Application of Flexible Friction Nanogenerator and Sensor in Sports Safety Monitoring

Abstract

With the development of science and technology, nanotechnology gradually becomes the growing energy shortage of new energy technology, and gains more and more scientists’ attention. Friction nanogenerator (TENG) is a nanogenerator with efficient energy conversion. Nanotextile (TEF-F) is a kind of friction material suitable for human skin, because nanotextiles have antibacterial function, radiation prevention, antistatic resistance, flame retardant, and other functions, and they can act on the outer layer of the skin and play a very good protective role. This article aims at studying a flexible friction nanogenerator and sensor as a safety monitoring equipment for sports. In this article, PTFE and nylon are proposed as friction nanomaterials of a flexible friction nanogenerator. A model of power generation by friction between insole and athlete is designed and tested. The experimental results show that the output voltage of PTFE friction nanomaterials with 50% water tightness can reach 200 V. Under the same conditions, compared with the output voltage of different textile fibers, the output voltage of nylon is up to 180 V. The output voltage of thin PTFE can reach 200 V, while that of nylon can reach 180 V. The output voltage of PTFE with medium thickness is 65 V, while that of nylon is 84 V. For thicker PTFE, the output voltage is only 58 V, while that of nylon is only 67 V. Therefore, for cotton, polyester, and nylon under the same conditions, the output voltage of nylon is significantly higher than that of different textile fibers. Moreover, for PTFE and nylon friction nanomaterials, the thinner their thickness, the higher their output voltage is.