A comparative study of energy harvesting performance of polymer-piezoceramic composites fabricated with different piezoceramic constituents

Mahale, B and Kumar, N and De, A and Pandey, R and Ranjan, R (2020) A comparative study of energy harvesting performance of polymer-piezoceramic composites fabricated with different piezoceramic constituents. In: International Journal of Energy Research .

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Abstract

Polymer-piezoceramic composites harness the flexibility of polymer and piezoelectric properties of ceramics to offer flexible piezoelectric materials for use in energy harvesting applications. Although, there is a general temptation to use piezoceramics which exhibits high piezoelectric coefficient (d33) in the fabrication of such composites, there are limitations posed by the processing conditions of the composite which eventually determines their overall performance. In the present work we have explored this aspect in detail. We fabricated composites with polyvinylidene fluoride (PVDF) as the polymer and three different piezoceramic powders namely BaTiO3 (BT), Ba(Ti0.97Sn0.03)O3 (BTS) and Sm-doped Pb (Mg1/3Nb2/3)O3-PbTiO3(Sm-PMN-PT). Our focus here is to understand the role of grain size of the ceramic powders in determining the dielectric, piezoelectric, and energy harvesting performance of the composites. To broaden the perspective, the results are compared with another analogous composite 0.59PbTiO3-0.41Bi(Zr0.5Ni0.5)O3 (PT-BNZ)-PVDF reported before. We found that, although, the dense ceramic specimen of Sm-PMN-PT exhibits exceptionally large d33, the composite with PT-BNZ exhibited the best piezoelectric and energy harvesting performance. BT, BTS and Sm-PMN-PT composites showed maximum surface power density of 6.24, 12.81 and 23.18 μW/cm2, respectively, and volume power density of 416.18, 854.1 and 1104 μW/cm3, respectively. Whereas surface power density and volume power density of PT-BNZ was 101.80 μW/cm2 and 5088.80 μW/cm3 respectively. We have also attempted to establish a correspondence between the piezoelectric response, energy harvesting performance and the poling induced domain reorientation/structural changes in the ceramic grains of the composites. © 2020 John Wiley & Sons Ltd

Item Type:	Journal Article
Publication:	International Journal of Energy Research
Publisher:	John Wiley and Sons Ltd
Additional Information:	The copyright of this article belongs to John Wiley and Sons Ltd
Keywords:	Barium titanate; Fabrication; Fluorine compounds; Lead titanate; Piezoelectric ceramics; Piezoelectricity; Polymers; Powders; Samarium compounds; Tin compounds, Ceramic grains; Comparative studies; Piezoelectric coefficient; Piezoelectric property; Piezoelectric response; Polyvinylidene fluorides; Power densities; Processing condition, Energy harvesting
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	16 Nov 2020 09:38
Last Modified:	16 Nov 2020 09:38
URI:	http://eprints.iisc.ac.in/id/eprint/66644

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