A spongy electrode-brush-structured dual-mode triboelectric nanogenerator for harvesting mechanical energy and self-powered trajectory tracking

摘要

Exploiting novel triboelectric nanogenerator (TENGs) with merits of high environmental adaptability,structural sustainability and multimode operating has gaied increasing attention.In this work,a conductive sponge (CS) electrode-brush-structured TENG is reported for the first time as a dual-mode mechanical energy harvester and self-powered sensor.The CS,prepared via a route of chemical plating followed with electroplating,has an interconnected porous network structure with high flexibility,elasticity and surface area.The implemented CSbased TENGs in both contact-separation and sliding mode achieve a high electrical performance,excellent mechanical response sensitivity,and environmental adaptability.Besides,a trajectory tracking sensor matrix has been demonstrated based on CS units.The superior real-time monitoring and integral trajectory recording,as well as the unique self-power,indicate the CS-based TENG has great potential in self-powered trajectory tracking.This study introduces a new TENG configuration that reveals a remarkable performance in energy harvesting and self-powered sensing,which provides a new approach to the future intelligent technology.