(Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators

Han Byul Kang, Chan Su Han, Jae Chul Pyun, Won Hyoung Ryu, Chong-Yun Kang, Yong Soo Cho

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Piezoelectric composite nanofibers based on (Na0.5,K0.5)NbO3 (NKN) nanoparticles embedded in poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] polymer are investigated in terms of their performance as nanogenerators. Perovskite NKN nanoparticles with ~30-105nm were separately prepared by combustion synthesis using polyacrylic acid (PAA) as a fuel. Surface modification of nanoparticles by tetradecylphosphonic acid (TDPA) was essential to secure proper adhesion with the polymer in the nanofibers prepared by electrospinning. Location-dependent piezoelectricity measurements confirmed that the region of embedded NKN filler particles exhibited better piezoelectricity than the P(VDF-TrFE) matrix region. Energy harvesting performance of the flexible composite nanogenerator demonstrated ~0.98V output voltage and ~78nA output current, which were enhanced depending on the volume fraction of the NKN nanoparticles dispersed in the polymer.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalComposites Science and Technology
Volume111
DOIs
Publication statusPublished - 2015 May 6
Externally publishedYes

Fingerprint

Nanofibers
Nanoparticles
Composite materials
Polymers
Piezoelectricity
carbopol 940
Combustion synthesis
Acids
Energy harvesting
Electrospinning
Perovskite
Surface treatment
Fillers
Volume fraction
Adhesion
Electric potential
polyvinylidene fluoride
trifluoroethene

Keywords

  • A. Functional composites
  • A. Nanocomposites
  • B. Electrical properties

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

(Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators. / Kang, Han Byul; Han, Chan Su; Pyun, Jae Chul; Ryu, Won Hyoung; Kang, Chong-Yun; Cho, Yong Soo.

In: Composites Science and Technology, Vol. 111, 06.05.2015, p. 1-8.

Research output: Contribution to journalArticle

Kang, Han Byul ; Han, Chan Su ; Pyun, Jae Chul ; Ryu, Won Hyoung ; Kang, Chong-Yun ; Cho, Yong Soo. / (Na,K)NbO3 nanoparticle-embedded piezoelectric nanofiber composites for flexible nanogenerators. In: Composites Science and Technology. 2015 ; Vol. 111. pp. 1-8.
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AU - Kang, Chong-Yun

AU - Cho, Yong Soo

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