The quantitative analysis for a contact-mode triboelectric energy harvesting device

Triboelectric energy harvesting is a promising energy harvesting technology which converts ambient mechanical energy into electrical energy using triboelectric and electrostatic coupling effects. In this paper, a contact-mode triboelectric energy harvesting device (TEHD) were qualitatively analyzed using a precision test rig, which accurately controlled the contact force and approach speed. From the governing equations of the contact-mode TEHD, we found factors which influence the performance of TEHD, and this was verified by experiments. The contact force affected to the amount of triboelectric charges, and short-circuit current. The approach speed of moving part did not affect the charges, but the short circuit current, output power, and optimal resistance.