Theoretical Modeling and Fabrication of Conductor–Dielectric Triboelectric Nanogenerators (CD-TENG)

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Published Sep 8, 2021
V VIJAYALAKSHMI

Abstract

With the growing Pandemic COVID Scenario, Human beings are surrounded with dozens of miniaturised wearable electronics and healthcare sensors. The potential requirements of mobile sensors are nano/micro power sources which are practically driven by conventional harmful chemical batteries for its stable operation. Cyclic time to time monitoring and replacement of tiny µpower batteries is quiet cost effective method. Therefore many scientists undergo research worldwide in order to develop low cost, high efficient alternate power source to serve the portable electronics in an eco-friendly approach. There comes an emerging novel Triboelectric nanogenerator (TENG) mechanical energy harvester sustainably powering flexible low power electronics such as smart watches, mobile phones, keypads, wireless smart toys, interfacing man-machine smart lighting control and security system etc., Triboelectric nanogenerator works on the principle of tribo-electrification and electrostatic induction mechanism[1]. It operates on four working modes namely contact-separation, sliding mode, freestanding mode and single electrode mode. Here we focus on conductor to dielectric sliding mode operation for smart toy application[2]. Though tribo-electrification is a well-known older technology, practical implementation for a real-time system not yet commercialised at the present-stage due to some of the Challenging factors. Design and Development of Conductor-Dielectric Triboelectric nanogenerator (CD-TENG) faces three important gaps to be investigated in detail to improve the triboelectric performance. First, Selection of stable and durable materials from triboelectric series is important to achieve figure of merit results. Secondly besides material selection, optimised structural surface morphologies by adopting accurate physical techniques such as spongy structure, grating structure, wavy structure also plays crucial role in output stability. Third designing energy storage system for TENG has to be deeply studied to promote their intelligence and miniaturization. The design of TENG clearly uses organic eco-friendly materials for harvesting bio-mechanical energy which avoid environmental hazards to society rather usage of harmful chemical batteries[3]. The main objective of this research mainly focuses on selection of suitable triboelectric materials by theoretical investigation and mathematical simulation using COMSOL. Then followed by fabrication and characterization to enhance the performance for smart toy application[4]. The organic dielectric material selected for this experimental work is PDMS (polydimethyl siloxane) and conductive metal chosen for sliding is copper. The simulated results and experimental methodology where shown in the circular chart below.

 Keywords

CD-TENG, PDMS, miniaturization, COMSOL, Surface Morphologies, cost-effective, chemical batteries

How to Cite

VIJAYALAKSHMI, V. (2021). Theoretical Modeling and Fabrication of Conductor–Dielectric Triboelectric Nanogenerators (CD-TENG). SPAST Abstracts, 1(01). Retrieved from https://spast.org/techrep/article/view/149
Abstract 27 |

Article Details

Keywords

CD-TENG, PDMS, miniaturization, COMSOL, Surface Morphologies, cost-effective, chemical batteries

References
[1] Z. L. Wang, Triboelectric Nanogenerators. .
[2] Z. Sun, L. Yang, S. Liu, J. Zhao, Z. Hu, and W. Song, “A green triboelectric nano-generator composite of degradable cellulose, piezoelectric polymers of PVDF/PA6, and nanoparticles of BaTiO3,” Sensors (Switzerland), vol. 20, no. 2, 2020, doi: 10.3390/s20020506.
[3] Z. Saadatnia, S. G. Mosanenzadeh, E. Esmailzadeh, and H. E. Naguib, “A High Performance Triboelectric Nanogenerator Using Porous Polyimide Aerogel Film,” Sci. Rep., vol. 9, no. 1, pp. 1–12, 2019, doi: 10.1038/s41598-018-38121-1.
[4] H. (Xi’an J. U. Shi, Z. (Zhejiang U. Liu, and X. (Xi’an J. U. Mei, “Overview of Human Walking Induced Energy,” Energies, 2019.
Section
SED: Energy Conversion & Storage