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Novel lead-free ceramic capacitors with high energy density and fast discharge performance
Li, X; Chen, XL; Sun, J; Zhou, MX; Zhou, HF
2020-02-15
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Issue3Pages:3426
SubtypeArticle
AbstractDielectric capacitors with high energy storage density, good frequency/temperature stability, and fast charge-discharge capability are highly demanded in pulsed power systems. In this work, we design and prepare a novel lead-free 0.88BaTiO(3)-0.12Bi(Li1/3Zr2/3)O-3 (0.12BLZ) relaxor ferroelectric ceramic for dielectric capacitor application. The microstructure, conduction mechanism, dielectric properties, and energy storage behavior of the 0.12BLZ ceramic were systematically studied. The impedance analysis demonstrates that the introduction of BLZ enhances the insulation ability and breakdown strength of the 0.12BLZ ceramic. Meanwhile, the introduction of BLZ can also reduce the polarization nonlinearity of the BaTiO3 matrix due to the weakly coupled relaxor behavior. As a result, ultrahigh energy storage density (U-rec) of 3 J/cm(3) and efficiency (0 of 93.8% were simultaneously achieved in 0.12BLZ ceramic. The significantly improved U-rec was far superior to most of the recently reported lead-free bulk ceramics. Additionally, excellent frequency and temperature stability (variations of U-rec less than 15% in different frequencies (1-100 Hz) and temperatures (25-140 degrees C)) can be also observed. In addition, the 0.12BLZ ceramic presents an ultrahigh current density (D-dis) of 759 A/cm(2), a giant power density (P-m) of 37.9 MW/cm(3), and a fast discharge time of 80 ns. The pulsed charge-discharge performances of the 0.12BLZ ceramic are obviously better than those of other lead-free ceramics. These results indicate that the 0.12BLZ relaxor ferroelectric may be an excellent candidate material applied for pulsed power systems.
DOI10.1016/j.ceramint.2019.10.055
WOS KeywordRELAXOR FERROELECTRIC CERAMICS ; STORAGE PROPERTIES ; DIELECTRIC-PROPERTIES ; EXCELLENT STABILITY ; THERMAL-STABILITY ; PHASE-TRANSITION ; EFFICIENCY ; MICROSTRUCTURE ; PERMITTIVITY ; BEHAVIOR
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28298
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, X,Chen, XL,Sun, J,et al. Novel lead-free ceramic capacitors with high energy density and fast discharge performance[J]. CERAMICS INTERNATIONAL,2020(3):3426.
APA Li, X,Chen, XL,Sun, J,Zhou, MX,&Zhou, HF.(2020).Novel lead-free ceramic capacitors with high energy density and fast discharge performance.CERAMICS INTERNATIONAL(3),3426.
MLA Li, X,et al."Novel lead-free ceramic capacitors with high energy density and fast discharge performance".CERAMICS INTERNATIONAL .3(2020):3426.
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