A flexible energy harvester based on a lead-free and piezoelectric BCTZ nanoparticle–polymer composite. Issue 40 (3rd October 2016)

• Record Type: Journal Article
• Authors: Baek, Changyeon; Yun, Jong Hyuk; Wang, Ji Eun; Jeong, Chang Kyu; Lee, Keon Jae; Park, Kwi-Il; Kim, Do Kyung
• Is Part Of: Nanoscale. Volume 8:Issue 40(2016)
• Page Start: 17632
• Page End: 17638
• Publication Date: 2016-10-03
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c6nr05784e
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A lead-free and piezoelectric BCTZ nanoparticle-based flexible energy harvester generates high-output energy sources from biomechanical motions. Abstract : Lead-free piezoelectric 0.5(Ba0.7 Ca0.3 )TiO3 –0.5Ba(Zr0.2 Ti0.8 )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).