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Giant power output in lead-free ferroelectrics by shock-induced phase transition
Gao, Zhipeng; Peng, Wei; Chen, Bin; Redfern, Simon A. T.; Wang, Ke; Chu, Baojin; He, Qiang; Sun, Yi; Chen, Xuefeng; Nie, Hengchang; Deng, Wen; Zhang, Lingkong; He, Hongliang; Wang, Genshui; Dong, Xianlin
2019-03-11
Source PublicationPHYSICAL REVIEW MATERIALS
ISSN2475-9953
Volume3Issue:3
SubtypeArticle
AbstractThe force-electric effect in ferroelectrics is characterized by the release of bound charge during pressure/shock-induced depolarization. In contrast to other electrical energy storage systems, the charge-storage/release by the force-electric effect of ferroelectrics is determined by polarization switching or polar-nonpolar phase transition. This offers a further set of options for materials design in the realm of energy conversion, especially for the high power density applications. Here, we report that a ferroelectric ceramic, Na0.5Bi0.5TiO3 (NBT), can generate a high power output (3.04 x 10(8) W/kg) under shock compression, which is one of the highest values achieved by the force-electric effect. The in situ synchrotron x-ray diffraction studies reveal that this power output mainly arises from a polar-nonpolar phase transition (rhombohedral-orthorhombic). First-principles calculations show that this is a first-order phase transition that undergoes two-step structure changes. These results extend the application of the force-electric effect and are a key step in understanding the phase transition behaviors of NBT under high pressure.
DOI10.1103/PhysRevMaterials.3.035401
Language英语
WOS Research AreaMaterials Science
PublisherAMER PHYSICAL SOC
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27282
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Gao, Zhipeng,Peng, Wei,Chen, Bin,et al. Giant power output in lead-free ferroelectrics by shock-induced phase transition[J]. PHYSICAL REVIEW MATERIALS,2019,3(3).
APA Gao, Zhipeng.,Peng, Wei.,Chen, Bin.,Redfern, Simon A. T..,Wang, Ke.,...&Dong, Xianlin.(2019).Giant power output in lead-free ferroelectrics by shock-induced phase transition.PHYSICAL REVIEW MATERIALS,3(3).
MLA Gao, Zhipeng,et al."Giant power output in lead-free ferroelectrics by shock-induced phase transition".PHYSICAL REVIEW MATERIALS 3.3(2019).
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