Crossing lateral-sliding type triboelectric nanogenerator

Abstract

Sliding mode triboelectric nanogenerator (S-TENG) has been widely developed for various devices. However, since the effective contact area of existing S-TENG is only half of the total space area, the charge generation capability has not reached the optimum level. Therefore, developing an effective charge transfer mode strategy to extract maximum energy from limited space remains a challenge. Here, we propose a crossing lateral-sliding type triboelectric nanogenerator (CLS-TENG) with attached-electrode mode and full space arrangement. CLS-TENG is realized by cross-arranging dielectric layers of opposite polarity in two triboelectric layers. CLS-TENG combines the advantages of dual electrode working mode and full space arrangement of dielectric layers, and has the higher transfer charge among existing sliding basic mode. Under identical area conditions, the transferred charge in the CLS-TENG is approximately twice that of the free-standing mode TENG and twice that of the lateral sliding mode TENG. Furthermore, an integrated prototype is developed based on the CLS-TENG to achieve energy harvesting under unidirectional water flow. This study has broken through the drawback of the current sliding basic mode where space cannot be fully utilized and offer a new way for the further development of high-performance TENG.