Enhanced flexible piezoelectric generating performance via high energy composite for wireless sensor network

Kyung Bum Kim, Jae Yong Cho, Deok Hwan Jeon, Jung Hwan Ahn, Seong Do Hong, Young Hun Jeong, Sahn Nahm, Tae Hyun Sung

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Piezoelectric 0.72 Pb(Zr0.47Ti0.53)O3-0.28 Pb[(Zn0.45Ni0.55)1/3Nb2/3]O3 + 0.5 mol% CuO (PNNC) particles were made for use in a composite of flexible energy harvester (FEH) that can convert sustainable mechanical deformation into electrical energy. The PNNC particles with a high transduction coefficient (d33 × g33) were mixed with polydimethylsiloxane (PDMS) matrix to produce the FEH. The FEH generated maximum output voltage of 55.24 V and current density of 2.76 μA/cm2 (power density: 554 μW/cm3, 3.2 mW) at the resonance frequency of 11 Hz. The energy conversion efficiency of about 20.7% has been achieved. The developed energy harvester is demonstrated in the self-powered wireless sensor node application in which the FEH spontaneously generated stable power under continuous mechanical stress.

Original languageEnglish
Pages (from-to)196-202
Number of pages7
JournalEnergy
Volume159
DOIs
Publication statusPublished - 2018 Sep 15

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Keywords

  • Flexible device
  • Piezoelectric energy harvester
  • Self-powered system
  • Sustainable energy
  • Temperature monitoring
  • Wireless sensor network

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Kim, K. B., Cho, J. Y., Jeon, D. H., Ahn, J. H., Hong, S. D., Jeong, Y. H., Nahm, S., & Sung, T. H. (2018). Enhanced flexible piezoelectric generating performance via high energy composite for wireless sensor network. Energy, 159, 196-202. https://doi.org/10.1016/j.energy.2018.06.048