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Issue 40, 2016
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A flexible energy harvester based on a lead-free and piezoelectric BCTZ nanoparticle–polymer composite

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Abstract

Lead-free piezoelectric 0.5(Ba0.7Ca0.3)TiO3–0.5Ba(Zr0.2Ti0.8)O3 (BCTZ) nanoparticles (NPs) composed of earth-abundant elements were adopted for use in a flexible composite-based piezoelectric energy harvester (PEH) that can convert mechanical deformation into electrical energy. The solid-state synthesized BCTZ NPs and silver nanowires (Ag NWs) chosen to reduce the toxicity of the filler materials were blended with a polydimethylsiloxane (PDMS) matrix to produce a piezoelectric nanocomposite (p-NC). The naturally flexible polymer-based p-NC layers were sandwiched between two conductive polyethylene terephthalate plastic substrates to achieve a flexible energy harvester. The BCTZ NP-based PEH effectively generated an output voltage peak of ∼15 V and a current signal of ∼0.8 μA without time-dependent degradation. This output was adequate to operate a liquid crystal display (LCD) and to turn on six blue light emitting diodes (LEDs).

Graphical abstract: A flexible energy harvester based on a lead-free and piezoelectric BCTZ nanoparticle–polymer composite

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Publication details

The article was received on 22 Jul 2016, accepted on 13 Sep 2016 and first published on 14 Sep 2016


Article type: Paper
DOI: 10.1039/C6NR05784E
Citation: Nanoscale, 2016,8, 17632-17638
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    A flexible energy harvester based on a lead-free and piezoelectric BCTZ nanoparticle–polymer composite

    C. Baek, J. H. Yun, J. E. Wang, C. K. Jeong, K. J. Lee, K. Park and D. K. Kim, Nanoscale, 2016, 8, 17632
    DOI: 10.1039/C6NR05784E

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