Mathematical Model of Sliding Mode Triboelectric Energy Harvester

Abstract

A triboelectric energy harvester converts mechanical energy to electrical energy, which is then collected and used to charge a rechargeable battery. This battery may be used to power small electronics devices for a myriad of applications such as temperature and humidity sensors, accelerometer or GPS tracking devices. In this paper, mathematical model of sliding mode triboelectric energy harvester has been developed to predict the harvested energy under mechanical motion, constant speed and accelerated motion. Numerical results reveal that harvested energy depends upon the type of motion, dielectric constant and surface charge density of triboelectric material. Further, experimental study has been conducted to validate the numerical result, and there is significant error between numerical and experimental result. Experimental setup will be further improved.

Triboelectric Film with Electrochemical Surface Modification for Multiple Mechanical Energy Harvesting with High Storage Efficiency and Sensing Applications

“…Recently, triboelectric nanogenerators (TENGs) can be implemented with a futuristic green energy harvesting technology including compact size, high efficiency, quick response, and cost-effectiveness. − The triboelectric effect and electrostatic induction are the main fundamental phenomena used by the TENG to convert applied mechanical force into electricity . There are two main basic working principles for the TENG, which are the contact-separation and sliding modes. − For the contact mode, it relies on repeated contact and separation between two materials that have different triboelectric polarities. The relative displacement between two contact surfaces of different triboelectric polarities creates uncompensated triboelectric charges that drive induced free electrons to flow through an external circuit .…”