On the effects of electrical conductivity on the triboelectric behavior of a PDMS-based composite material

Xiaoyue Zhao, Jai Dhanani, Zoubeida Ounaies, Ola Rashwan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With the increasing demand for small and portable electronic devices, new energy conversion systems that can harvest energy from body motion and ambient environment are needed. Triboelectricity has recently become promising among the various energy conversion mechanisms because triboelectric devices can be small, flexible, and portable. The triboelectric output performance is closely related to the materials’properties employed. In this study, the effect of electrical conductivity on the electrical output of a triboelectric device is investigated experimentally. Experiments are conducted using a vertical contact/separation mode with polydimethylsiloxane (PDMS) based material as one of the contacting materials. The electrical conductivity of PDMS is tuned by adding two different weight percent of multiwall carbon nanotube (CNT): 10wt% CNT and 20wt% CNT. The relationship between electrical conductivity and the triboelectric output performance is obtained by correlating the open circuit voltage (Voc) and short circuit current (Isc) with the different weight percent CNT-PDMS materials. A maximum Voc of 98V and a maximum Isc of 3.2μA were obtained with the 20wt% CNT-PDMS and Teflon pair; this increase is likely due to the combination of enhanced triboelectric polarity difference and electrical conductivity. The optimum external resistance was also measured for the different CNT-PDMS weight percent materials. The maximum triboelectric output power reached 180μW at 80MΩ for the 20wt% CNT-PDMS and Teflon pair.

Original languageEnglish (US)
Title of host publicationASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2020
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791884027
DOIs
StatePublished - 2020
EventASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2020 - Virtual, Online
Duration: Sep 15 2020 → …

Publication series

NameASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2020

Conference

ConferenceASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2020
CityVirtual, Online
Period9/15/20 → …

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Biomaterials

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