Nature-Derived Beetroot Based Highly Positive Triboelectric Layer for Self-Powered Football Player Monitoring

Abstract

Herein, we propose a novel highly positive triboelectric layer based on a nature driven beetroot and agar for self-powered football player monitoring system. The triboelectric layer is composed of a natural composite that has high positive charge affinity, biodegradability, and biocompatibility. We fabricated a thin triboelectric nanogenerator (TENG) using beetroot-agar composite and polytetrafluoroethylene (PTFE) and attached it to a shoe. The TENG can harvest the kinetic energy (2.2 mW power) from the football player motion and generate electrical signals with a sensitivity of 14.4 V/KPa, which can be wirelessly transmitted to a receiver. The receiver can process the signals and display the real-time information of the football player, such as its speed, and trajectory.