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Enhanced energy storage density in Ca and Ta co-doped AgNbO(3)antiferroelectric ceramics
Chao, WN; Yang, TQ; Li, YX; Liu, ZF
2020-09-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
SubtypeArticle; Early Access
AbstractCa and Ta co-doped AgNbO(3)antiferroelectric lead-free ceramics were fabricated by rolling process technique, and improved energy storage properties were obtained. X-ray diffraction and Raman spectra indicate a single perovskite structure for (Ag1-2xCax)(Nb1-xTax)O(3)ceramics. The dielectric performances were also investigated, showing that increasing the content of Ca and Ta from 0.1 to 5 mol% gradually decreased the temperatures of the phase transition of monoclinic M-1-M(2)and M-2-M-3. This proved the enhanced antiferroelectricity stability associated with the enlarged low temperature phase transition region. The obtained (Ag0.90Ca0.05)(Nb0.95Ta0.05)O(3)ceramics exhibit an enhanced recoverable energy storage density (3.36 J/cm(3)) and efficiency (58.3%) with good temperature and frequency stability. The same composition shows excellent charge and discharge properties with a discharge current as high as 91.5 A and fast discharge speed (150 ns discharge period). All these merits demonstrate that AgNbO3-based antiferroelectric ceramics are competitive with other lead-based and lead-free dielectric capacitors, which are promising candidates for dielectric energy storage applications.
DOI10.1111/jace.17415
WOS KeywordFREE ANTIFERROELECTRIC CERAMICS ; FERROELECTRIC PHASE-TRANSITION ; PERFORMANCE ; RAMAN
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27789
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Chao, WN,Yang, TQ,Li, YX,et al. Enhanced energy storage density in Ca and Ta co-doped AgNbO(3)antiferroelectric ceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2020.
APA Chao, WN,Yang, TQ,Li, YX,&Liu, ZF.(2020).Enhanced energy storage density in Ca and Ta co-doped AgNbO(3)antiferroelectric ceramics.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.
MLA Chao, WN,et al."Enhanced energy storage density in Ca and Ta co-doped AgNbO(3)antiferroelectric ceramics".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2020).
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