Fully Enclosed\nCylindrical Single-Electrode-Based Triboelectric Nanogenerator

Abstract

We report a fully enclosed cylindrical\nsingle-electrode-based triboelectric nanogenerator (S-TENG) consisting\nof a perfluoroalkoxy (PFA) ball with surface-etched nanowires, a floating\nlatex balloon, and an Al electrode at the end of the balloon. The\nmechanism of the S-TENG includes two independent processes: contact-induced\nelectrification between the PFA ball and the balloon and electrostatic\ninduction between the charged PFA ball and the Al electrode. The relationships\nbetween the electrical outputs and the sliding distance of the PFA\nball were systematically investigated by combining experimental results\nwith finite-element calculations. The S-TENG delivers an output voltage\nup to 236 V and a short-circuit current of 4.8 μA, which can\nbe used as a direct power source for driving tens of green light-emitting\ndiodes (LEDs). The S-TENG is a potential power source for gas-flow\nharvesters, air navigation, and environmental monitoring.