Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Small-Scale Wind Energy Harvester Using PZT Based Piezoelectric Ceramic Fiber Composite Array

PZT계 압전 세라믹 파이버 어레이 복합체를 이용한 미소 풍력 에너지 하베스터

  • Lee, Min-Seon (Optoelectronic Materials & Component Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Na, Yong-Hyeon (Optoelectronic Materials & Component Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Park, Jin-Woo (Department of Materials Science and Engineering, Yonsei University) ;
  • Jeong, Young-Hun (Optoelectronic Materials & Component Center, Korea Institute of Ceramic Engineering and Technology)
  • 이민선 (한국세라믹기술원 광전자부품소재센터) ;
  • 나용현 (한국세라믹기술원 광전자부품소재센터) ;
  • 박진우 (연세대학교 신소재공학과) ;
  • 정영훈 (한국세라믹기술원 광전자부품소재센터)
  • Received : 2019.06.27
  • Accepted : 2019.07.29
  • Published : 2019.09.01
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Abstract

A piezoelectric ceramic fiber composite (PCFC) was successfully fabricated using $0.69Pb(Zr_{0.47}Ti_{0.53})O_3-0.31[Pb(Zn_{0.4}Ni_{0.6})_{1/3}Nb_{2/3}]O_3$ (PZT-PZNN) for use in small-scale wind energy harvesters. The PCFC was formed using an epoxy matrix material and an array of Ag/Pd-coated PZT-PZNN piezo-ceramic fibers sandwiched by Cu interdigitated electrode patterned polyethylene terephthalate film. The energy harvesting performance was evaluated in a custom-made wind tunnel while varying the wind speed and resistive load with two types of flutter wind energy harvesters. One had a five-PCFC array vertically clamped with a supporting acrylic rod while the other used the same structure but with a five-PCFC cantilever array. Stainless steel (thickness: $50{\mu}m$) was attached onto one side of the PCFC to form the PZT-PZNN cantilever. The output power, in general, increased with an increase in the wind speed from 2 m/s to 10 m/s for both energy harvesters. The highest output power of $15.1{\mu}W$ at $14k{\Omega}$ was obtained at a wind speed of 10 m/s for the flutter wind energy harvester with the PZT-PZNN cantilever array. The results presented here reveal the strong potential for wind energy harvester applications to supply sustainable power to various IoT micro-devices.

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