Title

Bioinspired elastic piezoelectric composites for high-performance mechanical energy harvesting

RIS ID

129549

Publication Details

Zhang, Y., Jeong, C. Kyu., Yang, T., Sun, H., Chen, L., Zhang, S., Chen, W. & Wang, Q. (2018). Bioinspired elastic piezoelectric composites for high-performance mechanical energy harvesting. Journal of Materials Chemistry A, 6 (30), 14546-14552.

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-2and ∼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.

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Link to publisher version (DOI)

http://dx.doi.org/10.1039/c8ta03617a