Performance of piezoelectric power generation of multilayered poly(vinylidene fluoride) under high mechanical strain

Takashi Nakajima, Keiko Okaya, Kanako Ohta, Takeo Furukawa, Soichiro Okamura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this study, we examine the effective usage of a piezoelectric polymer for electric power generation on the basis of polymeric features such as high robustness, high flexibility, and easy formability. Theoretical calculation elucidates the potential of piezoelectric generation of the polymer with a large elastic strain. It is confirmed by the experimental results that the multilayered structure of the rolled poly(vinylidene fluoride) (PVDF) films enhances the performance of piezoelectric generation in proportion to the number of the PVDF layers and shows an apparent d33 of 7.1 nC/N for the film rolled 200 times. The generated charge as a function of the applied stress shows a linear increase. As a practical usage, we design the mechanical system equipped with a lever for applying a large foot-step-derived stress to embedded PVDF films. The performance of electric power generation using the system and the charging characteristics with the relatively large load capacitor are presented.

Original languageEnglish
Article number09ND14
JournalJapanese journal of applied physics
Volume50
Issue number9 PART 3
DOIs
Publication statusPublished - 2011 Sep 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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