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Achieving ultrahigh energy storage density and energy efficiency simultaneously in sodium niobate-based lead-free dielectric capacitors via microstructure modulation
Zhou, Mingxing; Liang, Ruihong; Zhou, Zhiyong; Dong, Xianlin
2019-08-01
Source PublicationINORGANIC CHEMISTRY FRONTIERS
ISSN2052-1553
Volume6Issue:8Pages:2148
SubtypeArticle
AbstractRecently, dielectric capacitors have drawn much attention from researchers and engineers due to their ultrahigh power density, ultrafast charge-discharge rate, and good temperature and fatigue stability. However, most related research mainly focuses on the improvement in dielectric breakdown strength and energy storage density rather than that in energy efficiency. In this study, we adopted the spark plasma sintering method to modify the microstructure and electric conductivity of Na0.7Bi0.1NbO3 lead-free ceramics, and subsequently enhanced their energy storage properties. As a result, the Na0.7Bi0.1NbO3 ceramics prepared by the spark plasma sintering method display a considerably large energy storage density of 3.41 J cm(-3) with an ultrahigh energy storage efficiency of 90.8% at 28 kV mm(-1). The improvement of energy storage performance is ascribed to the reduction of electric conductivity, which can be analyzed by the X-ray photoelectron spectroscopy and high-temperature complex impedance spectra. This study not only paves the way for environment-friendly Na0.7Bi0.1NbO3 lead-free ceramics to be developed for energy storage applications, but also interprets the internal mechanism of microstructure modulation which enhances energy storage properties.
DOI10.1039/c9qi00383e
Language英语
WOS Research AreaChemistry
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26931
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhou, Mingxing,Liang, Ruihong,Zhou, Zhiyong,et al. Achieving ultrahigh energy storage density and energy efficiency simultaneously in sodium niobate-based lead-free dielectric capacitors via microstructure modulation[J]. INORGANIC CHEMISTRY FRONTIERS,2019,6(8):2148.
APA Zhou, Mingxing,Liang, Ruihong,Zhou, Zhiyong,&Dong, Xianlin.(2019).Achieving ultrahigh energy storage density and energy efficiency simultaneously in sodium niobate-based lead-free dielectric capacitors via microstructure modulation.INORGANIC CHEMISTRY FRONTIERS,6(8),2148.
MLA Zhou, Mingxing,et al."Achieving ultrahigh energy storage density and energy efficiency simultaneously in sodium niobate-based lead-free dielectric capacitors via microstructure modulation".INORGANIC CHEMISTRY FRONTIERS 6.8(2019):2148.
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