Bioinspired elastic piezoelectric composites for high-performance mechanical energy harvesting

Yong Zhang, Chang Kyu Jeong, Tiannan Yang, Huajun Sun, Long Qing Chen, Shujun Zhang, Wen Chen, Qing Wang

Research output: Contribution to journalArticle

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Abstract

We report the sea sponge-inspired design and preparation of piezoelectric composite generators (PCGs) based on a three-dimensional electroceramic skeleton. The remarkable improvements in the piezopotential of the bioinspired structure have been theoretically analyzed using numerical simulations based on a phase-field simulation. The open-circuit voltage, short-circuit current density and instantaneous power density of the bioinspired PCG reach up to ∼25 V, ∼550 nA cm-2 and ∼2.6 μW cm-2, respectively, corresponding to about 16 times higher power than that of conventional particle based piezoelectric polymer composites. Moreover, the bioinspired PCG displays 30 times higher strain-voltage efficiency under stretching than the state-of-the-art performance of the flexible piezoelectric energy harvesters reported so far.

Original languageEnglish (US)
Pages (from-to)14546-14552
Number of pages7
JournalJournal of Materials Chemistry A
Volume6
Issue number30
DOIs
StatePublished - Jan 1 2018

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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