期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 30, 页码 14546-14552出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta03617a
关键词
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资金
- China Scholarship Council (CSC)
- National Natural Science Foundation of China [51372181, 51672198]
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 similar to 25 V, similar to 550 nA cm(-2) and similar to 2.6 mu W 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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