High-performance piezoelectric nanogenerators based on chemically-reinforced composites

Eun Jung Lee, Tae Yun Kim, Sang Woo Kim, Sunho Jeong, Youngmin Choi, Su Yeon Lee

Research output: Contribution to journalArticlepeer-review


High-performance flexible piezoelectric nanogenerators (PNGs) based on composite thin films comprising amine-functionalized lead zirconate titanate (PZT) nanoparticles (PZT-NH2 NPs) and a thermoplastic triblock copolymer grafted with maleic anhydride are fabricated. The chemically reinforced composite contains a stable dispersion of PZT NPs within the polymer matrix with enhanced stress applied to the PZT NPs. Without additional dispersants, the uniform distribution of PZT-NH2 NPs in the polymer composite improves the piezoelectric power generation compared to that of a PNG device using pristine PZT NPs. This unique composite behavior allows the PZT-NH2 NP-based flexible PNG to exhibit a high output voltage of 65 V and current of 1.6 μA without time-dependent degradation. This alternating energy from the PNG can be used to charge a capacitor and operate light-emitting diodes through a full bridge rectifier. Furthermore, the proposed PNG is demonstrated as a promising energy harvester for potential applications in self-powered systems.

Original languageEnglish
Pages (from-to)1425-1430
Number of pages6
JournalEnergy and Environmental Science
Issue number6
Publication statusPublished - 2018 Jun

Bibliographical note

Funding Information:
This work has been performed as a Basic project (referring to projects performed with the budget directly contributed by the Government to achieve the purposes of establishment of Government-funded research institutes) and supported by the KOREA RESEARCH INSTITUTE of CHEMICAL TECHNOLOGY (KRICT, SI1802) and the Global Research Laboratory Program of the National Research Foundation (NRF) funded by Ministry of Science, Information and Communication Technologies and Future Planning (NRF-2015K1A1A2029679).

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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