Liquid-solid contact electrification based on discontinuous-conduction triboelectric nanogenerator induced by radially symmetrical structure

Triboelectric nanogenerators (TENGs) for scavenging mechanical energy has been conducted over the past decade with respectable successes. Up to now, the solid-solid TENG has been the dominant side but themselves still have their own drawbacks; thus, the liquid-solid TENG has got attention instead. Here we developed a discontinuous-conduction-based rotary triboelectric nanogenerator based on the liquid-solid electrification. By using the motion-activated switch structure, the induced charges can accumulate on one electrode and then release to another electrode at a specifically designated position. Taking advantage of this process, we can maximize the charge transfer per cycle which also improves the output performance of the developed TENG.