Measuring Piezoelectric Output—Fact or Friction?
Advanced Materials 2020
Andris Šutka, Peter Sherrell, Nick Shepelin, Linards Lapčinskis, Kaspars Mālnieks, Amanda Ellis

Piezoelectric polymers are emerging as exceptionally promising materials for energy harvesting. While the theoretical figures of merit for piezoelectric polymers are comparable to ceramics, the measurement techniques need to be retrofitted to account for the different mechanical properties of the softer polymeric materials. Here, how contact electrification, including friction and contact separation, is often mistaken for piezoelectric charge is examined, and a perspective for how to separate these effects is provided. The state of the literature is assessed, and recommendations are made for clear and simple guidelines in reporting, for both sample geometry and testing methods, to enable accurate determination of piezoelectric figures of merit in polymers. Such improvements will allow an understanding of what types of material manipulation are required in order to enhance the piezoelectric output from polymers and enable the next generation of polymer energy harvester design.

Atslēgas vārdi
energy harvesting, measurement techniques, piezoelectricity, polymer composites, triboelectricit

Šutka, A., Sherrell, P., Shepelin, N., Lapčinskis, L., Mālnieks, K., Ellis, A. Measuring Piezoelectric Output—Fact or Friction? Advanced Materials, 2020, Vol. 32, No. 32, Article number 2002979. ISSN 0935-9648. e-ISSN 1521-4095. Pieejams: doi:10.1002/adma.202002979

Publikācijas valoda
English (en)
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