Open AccessBoosting energy harvesting performances of fine‐grained piezoceramics by samarium doping strategy
Author(s) -
Yan Jing,
Hou Yudong,
Yu Xiaole,
Zheng Mupeng,
Zhu Mankang
Publication year - 2021
Publication title -
international journal of ceramic engineering and science
Language(s) - English
Resource type - Journals
ISSN - 2578-3270
DOI - 10.1002/ces2.10088
Subject(s) - samarium , materials science , microelectronics , piezoelectricity , doping , energy harvesting , nanotechnology , optoelectronics , composite material , power (physics) , chemistry , physics , inorganic chemistry , quantum mechanics
The construction of fine‐grained piezoceramics with large transduction coefficient ( d 33 × g 33 ) and mechanical properties is the key to the development of high‐quality piezoelectric energy harvesters (PEHs). In this work, samarium doping strategy is used to optimize the properties of Pb(Zn 1/3 Nb 2/3 ) 0.20 (Zr 1/2 Ti 1/2 ) 0.80 O 3 (0.2PZN‐0.8PZT) piezoceramics. The results show that Sm 2 O 3 additive can effectively refine the grain size accompanied with the enhanced mechanical properties. Meanwhile, the Sm 2 O 3 addition induced the formation of local structural heterogeneity accompanied by the reduced domain size, which boosts the transduction coefficient. A cantilever beam type PEH was further assembled from the preferred samarium modified material, and the power density was up to 489 μW/cm 3 at 1 g acceleration. Excitingly, its relative charging ability to commercial electrolytic capacitor has a relative enhancement of ~91% compared to the undoped counterpart. This work not only provides a piezoceramic with excellent energy harvesting characteristics, but also demonstrates a new important paradigm for the development of fast‐charging microelectronic storage devices in wireless sensor networks.