A multisource energy harvesting utilizing highly efficient ferroelectric PMN-PT single crystal

Almuatasim Alomari, Ashok Batra, Mohan Aggarwal, C. R. Bowen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper demonstrates a multi-source energy harvester that is able to utilize simultaneously both piezoelectric and pyroelectric effects in lead magnesium niobate-lead titanate (PMN-PT) single crystal. The paper presents a study of PMN-PT single crystal with a (67:33) composition grown in our laboratory via a vertical gradient freeze method without any flux. The performance of the piezoelectric and pyroelectric energy harvester using unimorph device structure was evaluated via modeling and experiment. The theoretical study was implemented based on a distributed parameter electromechanical model and the modelling procedure was approximated using finite element analysis to predict the electromechanical behavior of the harvester. The maximum power density at a resonance frequency of 50 Hz and optimum resistance of 2 MΩ was 16.7 nW/(g2 cm3) under a 1 g acceleration of vibration. The measured values of electrical output parameters were in good agreement with theoretical and modelling results using MATLAB and COMSOL Multiphysics, respectively. By using the pyroelectric effect along with the piezoelectric effect, the output voltage of the energy harvester was found to be enhanced at the optimum resistance and specific frequency values. It was noticed that the output voltage was increased monotonically with temperature-difference (ΔT) and reaches up to 180 % of its original value under temperature difference of 1.7 °C at a frequency value of 49 Hz.

LanguageEnglish
Pages10020-10030
Number of pages11
JournalJournal of Materials Science-Materials in Electronics
Volume27
Issue number10
Early online date2 Jun 2016
DOIs
StatusPublished - Oct 2016

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Harvesters
Energy harvesting
Ferroelectric materials
Single crystals
output
temperature gradients
single crystals
Lead
niobates
electric potential
energy sources
Piezoelectricity
energy
magnesium
radiant flux density
Electric potential
MATLAB
Magnesium
vibration
gradients

Cite this

A multisource energy harvesting utilizing highly efficient ferroelectric PMN-PT single crystal. / Alomari, Almuatasim; Batra, Ashok; Aggarwal, Mohan; Bowen, C. R.

In: Journal of Materials Science-Materials in Electronics, Vol. 27, No. 10, 10.2016, p. 10020-10030.

Research output: Contribution to journalArticle

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