Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Flexible Energy Harvester Made of Organic-Inorganic Hybrid Piezoelectric Nanocomposite

유기-무기 하이브리드 압전 나노복합체 기반의 플렉서블 에너지 하베스터 제작 및 발전성능 평가

  • Kwon, Yu Jeong (School of Materials Science and Engineering, Kyungpook National University) ;
  • Hyeon, Dong Yeol (School of Materials Science and Engineering, Kyungpook National University) ;
  • Park, Kwi-Il (School of Materials Science and Engineering, Kyungpook National University)
  • 권유정 (경북대학교 신소재공학부 금속신소재공학전공) ;
  • 현동열 (경북대학교 신소재공학부 금속신소재공학전공) ;
  • 박귀일 (경북대학교 신소재공학부 금속신소재공학전공)
  • Received : 2019.05.23
  • Accepted : 2019.06.14
  • Published : 2019.06.27
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Abstract

A flexible piezoelectric energy harvester(f-PEH) that converts tiny mechanical and vibrational energy resources into electric signals without any restraints is drawing attention as a self-powered source to operate flexible electronic systems. In particular, the nanocomposites-based f-PEHs fabricated by a simple and low-cost spin-coating method show a mechanically stable and high output performance compared to only piezoelectric polymers or perovskite thin films. Here, the non-piezoelectric polymer matrix of the nanocomposite-based f-PEH is replaced by a P(VDF-TrFE) piezoelectric polymer to improve the output performance generated from the f-PEH. The piezoelectric hybrid nanocomposite is produced by distributing the perovskite PZT nanoparticles inside the piezoelectric elastomer; subsequently, the piezoelectric hybrid material is spin-coated onto a thin metal substrate to achieve a nanocomposite-based f-PEH. A fabricated energy device after a two-step poling process shows a maximum output voltage of 9.4 V and a current of 160 nA under repeated mechanical bending. Finite element analysis(FEA) simulation results support the experimental results.

Keywords

References

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