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Fabrication of CNT/PVDF Composite Film and Its Electrical Properties

CNT/PVDF 압전 복합막의 제작과 전기적 특성

  • Lee, Sunwoo (Department of Electrical Information, Inha Technical College) ;
  • Jung, Nak-Chun (Department of Electrical Engineering, Inha University)
  • 이선우 (인하공업전문대학 전기정보과) ;
  • 정낙천 (인하대학교 전기공학과)
  • Received : 2013.07.19
  • Accepted : 2013.07.24
  • Published : 2013.08.01

Abstract

The carbon nanotube / poly-vinylidene fluoride (CNT/PVDF) composite films for the nano-generator devices were fabricated by spray coating method using the CNT/PVDF solution, which was prepared by adding PVDF pellets into the CNT dispersed N-Methyl-2-pyrroli-done (NMP) solution. The flexible CNT/PVDF composite films were investigated by the scanning electron microscopy, which revealed that the CNTs were uniformly dispersed in the PVDF matrix and thickness of the films was approximately $20{\mu}m$. Fourier transform infra-red spectra were used to investigate crystal structure of the as-spray-coated CNT/PVDF films, and we found that they revealed extremely large portion of the ${\beta}$ phase PVDF. The capacitance of the CNT/PVDF films increased by adding CNTs into the PVDF matrix, and finally saturated. However, the resistance didn't show any saturation effect in the CNT concentration range of 0~4 wt%. Finally, the resulting nano-generator devices revealed reasonable current output after given mechanical stress.

Keywords

References

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