A Fully Verified Theoretical Analysis of Contact-Mode Triboelectric Nanogenerators as a Wearable Power Source

Bao Yang, Wei Zeng, Ze Hua Peng, Shi Rui Liu, Ke Chen, Xiaoming Tao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

56 Citations (Scopus)

Abstract

Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Harvesting mechanical energy from human activities by triboelectric nanogenerators (TENGs) is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, and wearable electronics. A theoretical model for contact-mode triboelectric nanogenerators based on the principles of charge conservation and zero loop-voltage is illustrated. Explicit expressions for the output current, voltage, and power are presented for the TENGs with an external load of resistance. Experimental verification is conducted by using a laboratory-fabricated contact-mode TENG made from conducting fabric electrodes and polydimethylsiloxane/graphene oxide composite as the dielectric layer. Excellent agreements of the output voltage, current, and power are demonstrated between the theoretical and experimental results, without any adjustable parameters. The effects of the moving speed on output voltage, current, and power are illustrated in three cases, that is, the motion with constant speed, the sinusoidal motion cycles, and the real walking cycles by human subject. The fully verified theoretical model is a very powerful tool to guide the design of the device structure and selection of materials, and optimization of performance with respect to the application conditions of TENGs.
Original languageEnglish
Article number1600505
JournalAdvanced Energy Materials
Volume6
Issue number16
DOIs
Publication statusPublished - 24 Aug 2016

Keywords

  • fiber-based electronic devices
  • soft energy harvesters
  • triboelectric nanogenerators
  • wearable electronics

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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