Flexible piezoelectric energy generators based on P(VDF-TrFE) nanofibers

Seung Rok Kim, Ju Hyun Yoo, Yong Soo Cho, Jin Woo Park

Research output: Contribution to journalArticle

Abstract

Developing flexible/stretchable piezoelectric nanogenerators (PNGs) for powering various portable wearable electronic devices has attracted considerable attention. In this study, we investigate the effects of changing the degree of alignment and thermal annealing conditions on the mechanical properties and the performances of the polymer nanofiber PNGs. PNGs are fabricated with electrospun poly(vinylidenefluoride-cotrifluoroethylene) (P(VDF-TrFE)) nanofibers under various rolling and thermal annealing posttreatment conditions. Thermal annealing increases both the ferroelectric phase and the modulus of the nanofibers, and geometrically aligned nanofibers show anisotropic changes in modulus, stiffer in parallel direction stretching. The performances of PNGs fabricated under various conditions are compared, and the mechanism by which the mechanical properties are affected by the degree of alignment and thermal annealing is analyzed and discussed. The well-aligned and thermally treated PNG cells showed the increased power density value of 1.35 mW cm-3 which is twice of the pristine randomly oriented samples without thermal treatment. Also, the nanofibers maintained its alignment structure after 10,000 times cyclic 7% stretching test without any cracks.

Original languageEnglish
Article number086311
JournalMaterials Research Express
Volume6
Issue number8
DOIs
Publication statusPublished - 2019 May 17

Fingerprint

Nanofibers
Annealing
Stretching
Mechanical properties
Ferroelectric materials
Polymers
Heat treatment
Cracks
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Cite this

@article{2bd8ec34943f4264933dc64db91b8498,
title = "Flexible piezoelectric energy generators based on P(VDF-TrFE) nanofibers",
abstract = "Developing flexible/stretchable piezoelectric nanogenerators (PNGs) for powering various portable wearable electronic devices has attracted considerable attention. In this study, we investigate the effects of changing the degree of alignment and thermal annealing conditions on the mechanical properties and the performances of the polymer nanofiber PNGs. PNGs are fabricated with electrospun poly(vinylidenefluoride-cotrifluoroethylene) (P(VDF-TrFE)) nanofibers under various rolling and thermal annealing posttreatment conditions. Thermal annealing increases both the ferroelectric phase and the modulus of the nanofibers, and geometrically aligned nanofibers show anisotropic changes in modulus, stiffer in parallel direction stretching. The performances of PNGs fabricated under various conditions are compared, and the mechanism by which the mechanical properties are affected by the degree of alignment and thermal annealing is analyzed and discussed. The well-aligned and thermally treated PNG cells showed the increased power density value of 1.35 mW cm-3 which is twice of the pristine randomly oriented samples without thermal treatment. Also, the nanofibers maintained its alignment structure after 10,000 times cyclic 7{\%} stretching test without any cracks.",
author = "Kim, {Seung Rok} and Yoo, {Ju Hyun} and Cho, {Yong Soo} and Park, {Jin Woo}",
year = "2019",
month = "5",
day = "17",
doi = "10.1088/2053-1591/ab1ee8",
language = "English",
volume = "6",
journal = "Materials Research Express",
issn = "2053-1591",
publisher = "IOP Publishing Ltd.",
number = "8",

}

Flexible piezoelectric energy generators based on P(VDF-TrFE) nanofibers. / Kim, Seung Rok; Yoo, Ju Hyun; Cho, Yong Soo; Park, Jin Woo.

In: Materials Research Express, Vol. 6, No. 8, 086311, 17.05.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Flexible piezoelectric energy generators based on P(VDF-TrFE) nanofibers

AU - Kim, Seung Rok

AU - Yoo, Ju Hyun

AU - Cho, Yong Soo

AU - Park, Jin Woo

PY - 2019/5/17

Y1 - 2019/5/17

N2 - Developing flexible/stretchable piezoelectric nanogenerators (PNGs) for powering various portable wearable electronic devices has attracted considerable attention. In this study, we investigate the effects of changing the degree of alignment and thermal annealing conditions on the mechanical properties and the performances of the polymer nanofiber PNGs. PNGs are fabricated with electrospun poly(vinylidenefluoride-cotrifluoroethylene) (P(VDF-TrFE)) nanofibers under various rolling and thermal annealing posttreatment conditions. Thermal annealing increases both the ferroelectric phase and the modulus of the nanofibers, and geometrically aligned nanofibers show anisotropic changes in modulus, stiffer in parallel direction stretching. The performances of PNGs fabricated under various conditions are compared, and the mechanism by which the mechanical properties are affected by the degree of alignment and thermal annealing is analyzed and discussed. The well-aligned and thermally treated PNG cells showed the increased power density value of 1.35 mW cm-3 which is twice of the pristine randomly oriented samples without thermal treatment. Also, the nanofibers maintained its alignment structure after 10,000 times cyclic 7% stretching test without any cracks.

AB - Developing flexible/stretchable piezoelectric nanogenerators (PNGs) for powering various portable wearable electronic devices has attracted considerable attention. In this study, we investigate the effects of changing the degree of alignment and thermal annealing conditions on the mechanical properties and the performances of the polymer nanofiber PNGs. PNGs are fabricated with electrospun poly(vinylidenefluoride-cotrifluoroethylene) (P(VDF-TrFE)) nanofibers under various rolling and thermal annealing posttreatment conditions. Thermal annealing increases both the ferroelectric phase and the modulus of the nanofibers, and geometrically aligned nanofibers show anisotropic changes in modulus, stiffer in parallel direction stretching. The performances of PNGs fabricated under various conditions are compared, and the mechanism by which the mechanical properties are affected by the degree of alignment and thermal annealing is analyzed and discussed. The well-aligned and thermally treated PNG cells showed the increased power density value of 1.35 mW cm-3 which is twice of the pristine randomly oriented samples without thermal treatment. Also, the nanofibers maintained its alignment structure after 10,000 times cyclic 7% stretching test without any cracks.

UR - http://www.scopus.com/inward/record.url?scp=85069638392&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069638392&partnerID=8YFLogxK

U2 - 10.1088/2053-1591/ab1ee8

DO - 10.1088/2053-1591/ab1ee8

M3 - Article

AN - SCOPUS:85069638392

VL - 6

JO - Materials Research Express

JF - Materials Research Express

SN - 2053-1591

IS - 8

M1 - 086311

ER -