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Issue 10, 2013
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A spring-type piezoelectric energy harvester

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Abstract

We developed a three-dimensional spring-type piezoelectric energy harvester using a dip-coating method and multi-directional electrode deposition. The energy harvester consists of a bi-layered structure composed of a surface electrode and a ferroelectric polymer, on a conventional spring which has two roles ā€“ the core electrode and the mechanical substrate for the ferroelectric polymer. The energy harvester generated an output voltage of up to 88 mV as a function of cycling compression stress, which leads to a piezoelectric constant of 28.55 pC Nāˆ’1 for unpoled P(VDF-TrFE) films. Since the spring structure significantly decreases the resonance frequency of the harvester, the spring-type energy harvester can effectively generate electricity using low-frequency vibration energy abundant in the nature.

Graphical abstract: A spring-type piezoelectric energy harvester

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Supplementary files

Article information


Submitted
17 Oct 2012
Accepted
04 Jan 2013
First published
11 Jan 2013

RSC Adv., 2013,3, 3194-3198
Article type
Communication

A spring-type piezoelectric energy harvester

D. Kim, S. Hong, D. Li, H. S. Roh, G. Ahn, J. Kim, M. Park, J. Hong, T. Sung and K. No, RSC Adv., 2013, 3, 3194 DOI: 10.1039/C2RA22554A

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