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High Dense Structure Boosts Energy Harvesting and Cycling Reliabilities of High-Performance Lead-Free Energy Harvester

Abstract

Currently, effective piezoelectric energy harvester is based on Pb(Zr,Ti)O3 (PZT) ceramics, however, the growing environmental concerns have been pushing the development of viable green alternatives for lead-based piezoelectric ceramics. In this work, high quality Mn2+-modified (K0.5Na0.5)NbO3 (Mn-KNN) lead-free piezoelectric ceramic has been prepared, which is promising to be used in lead-free piezoelectric energy harvester. Here, we present that Mn-KNN ceramics not only possess high Curie temperature, but also excellent energy harvesting performance, benefiting from high dense fine-grained structure and various domain configurations. In the mode of cantilever-type energy harvester, a high output power of 85 μW and peak-to-peak voltage of 16 V were obtained at an acceleration of 40 m/s2. Further, the Mn-KNN energy harvester exhibits excellent fatigue resistance up to 106 cycles. These finding render the Mn-KNN piezoelectric energy harvester having the potential application for self-power source of wireless sensor network system.

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Publication details

The article was received on 02 Mar 2017, accepted on 13 Jul 2017 and first published on 13 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC00914C
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    High Dense Structure Boosts Energy Harvesting and Cycling Reliabilities of High-Performance Lead-Free Energy Harvester

    M. Zheng, Y. Hou, X. Yan, L. Zhang and M. Zhu, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC00914C

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