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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Fabrication and Energy Harvesting Characteristics of Water Energy Harvester Using Piezoelectric Ceramic Bimorph Cantilever

바이몰프형 압전세라믹 캔틸레버를 이용한 수력에너지 하베스터 모듈 제작 및 발전 특성

  • Kim, Kyoung-Bum (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Chang-Il (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Yun, Ji-Sun (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Jeong, Young Hun (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Nahm, Jung Hee (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Cho, Jeong-Ho (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Paik, Jong-Hoo (Electronic and Material Ceramics Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Nahm, Sahn (Department of Materials Science and Engineering, Korea University) ;
  • Seong, Tae-Hyeon (Department of Electrical Engineering, Hanyang University)
  • 김경범 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 김창일 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 윤지선 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 정영훈 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 남중희 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 조정호 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 백종후 (한국세라믹기술원 전자소재융합본부 지능형전자부품팀) ;
  • 남산 (고려대학교 신소재공학과) ;
  • 성태현 (한양대학교 전기공학과)
  • Received : 2012.10.12
  • Accepted : 2012.11.01
  • Published : 2012.12.01
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Abstract

A new water energy harvester module, which is composed of piezoelectric bimorph cantilevers, harvesting circuit and a shaft with 16 impellers at a center axis, was fabricated for energy harvesting application. High energy density $Pb(Zr_{0.54}Ti_{0.46})O_3$ + 0.2 wt% $Cr_2O_3$ + 1.0 wt% $Nb_2O_5$ (PZT-CN) thick film obtained by tape casting method was used for the bimorph cantilever. The PZT-CN bimorph cantilever with a proof mass of 49 g exhibited extremely high output power of 22.5 mW (24 $mW//cm^3$) at resonance frequency of 11 Hz. In addition, the fabricated water energy harvester has a cylindrical structure with 48 bimorph cantilevers clamped at inner surface. A significantly high output power of 433 mW was obtained at a rotation speed of 120 rpm with a resistive load of $500{\Omega}$ for the water energy harvester.

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References

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