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An Investigation of Energy Harvesting Using Electrostrictive Polymers

Published online by Cambridge University Press:  01 February 2011

Kailiang Ren ,
Yiming Liu ,
Heath F Hofmann  and
Qiming Zhang
Kailiang Ren
Affiliation:
[email protected], Penn State University, Electrical Engineering, 187 Material Research Lab, University Park, PA, 16802, United States, 814-8639558, 814-8637846
Yiming Liu
Affiliation:
[email protected], Penn State University, Department of Electrical Engineering
Heath F Hofmann
Affiliation:
[email protected], Penn State University, Department of Electrical Engineering, United States
Qiming Zhang
Affiliation:
[email protected], Penn State University, Department of Electrical Engineering, United States
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Abstract

Owing to their low acoustic impedance, high elastic energy density, and relatively high electromechanical conversion efficiency, the electroactive polymers have begun to show the potential for energy harvesting or mechanical to electrical energy conversion. In addition, due to the electromechanical coupling in these materials the electric and mechanical properties of these polymers will depend on the imposed electrical and mechanical conditions. This paper discusses how to utilizing this unique property to maximum the energy conversion efficiency and the harvested electrical energy density in the electrostrictive polymers. As an example, we demonstrate that when a properly phased and externally applied electric AC field is superimposed on the mechanical cycle, an output electrical energy density of 39mJ/cm3 and mechanical-to-electrical conversion efficiency of about 10% can be obtained from the electrostrictive P(VDF-TrFE) based polymers.

Keywords

polymerelectronic materialenergy-storage
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 889: Symposium W – Electroresponsive Polymers and Their Applications , 2005 , 0889-W01-05
Copyright
Copyright © Materials Research Society 2006

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References

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