KNN/PDMS/C-based lead-free piezoelectric composite film for flexible nanogenerator

  • Mengjie Xia
  • Cuixian Luo
  • Xiaoxiao Su
  • Yinhui Li
  • Pengwei LiEmail author
  • Jie Hu
  • Gang Li
  • Huabei Jiang
  • Wendong Zhang


A novel approach to fabricate a high performance flexible piezoelectric nanogenerator (PNG) by employing K0.5Na0.5NbO3 (KNN)/PDMS/C composite thin film has been proposed. The formed 12 wt% C doping KNN/PDMS PNG demonstrates a higher relative permittivity (Ɛr, 173.56) and larger remanent polarization (Pr, 1.84 µC/cm2) than pure KNN/PDMS film, thus serving as the possible origins of their comparative piezoelectric activities, which could generate an maximum output voltage of 10.55 V (3.3 times as much as the PNG without C doping). Besides, the PNG is able to light up a commercial green light-emitting diode (LED) through an energy storage capacitor (47 µF), showing its great potential as power of wearable and mobile devices.



This work was supported by the Special Talents in Shanxi Province (Grant No. 201605D211020), the Projects of International Cooperation and Exchanges of Shanxi Province (Grant No. 201803D421029), and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (Grant No. 2016136).

Supplementary material

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Supplementary material 1 (DOCX 839 KB)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Mengjie Xia
    • 1
  • Cuixian Luo
    • 1
  • Xiaoxiao Su
    • 1
  • Yinhui Li
    • 1
  • Pengwei Li
    • 1
    Email author
  • Jie Hu
    • 1
  • Gang Li
    • 1
  • Huabei Jiang
    • 2
  • Wendong Zhang
    • 1
  1. 1.Micro-Nano System Research Center, College of Information and ComputerTaiyuan University of TechnologyTaiyuanChina
  2. 2.Biomedical Optics Laboratory, Department of Medical Engineering, College of EngineeringUniversity of South FloridaTampaUSA

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