Constructing layered structures to enhance the breakdown strength and energy density of Na0.5Bi0.5TiO3-based lead-free dielectric ceramics

被引：62

作者：

Li, Mei ^{[1
]}

Fan, Pengyuan ^{[1
]}

Ma, Weigang ^{[1
]}

Liu, Kai ^{[1
]}

Zang, Jiadong ^{[2
]}

Samart, Chanatip ^{[3
]}

Zhang, Ting ^{[4
]}

Tan, Hua ^{[5
]}

Salamon, David ^{[5
]}

Zhang, Haibo ^{[1
,6
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China

[2] ELZ Technol Innovat Ctr, D-35116 Hatzfeld, Germany

[3] Thammasat Univ, Fac Sci & Technol, Dept Chem, Pathum Thani 12120, Thailand

[4] Shenzhen Zhenhua Fu Elect Co Ltd, Shenzhen 518109, Guangdong, Peoples R China

[5] Brno Univ Technol, Cent European Inst Technol CEITEC, Brno, Czech Republic

[6] Huazhong Univ Sci & Technol, Engn Res Ctr Funct Ceram, Minist Educ, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2019年 / 7卷 / 48期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

RELAXOR FERROELECTRIC CERAMICS; STORAGE PROPERTIES; POLYMER NANOCOMPOSITES; SINTERING TEMPERATURE; THIN-FILMS; EFFICIENCY; MICROSTRUCTURE; POLARIZATION; PERFORMANCE; INTERFACES;

D O I：

10.1039/c9tc05637h

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The improvement of breakdown strength for NBT-based ceramics is currently the main challenge in applications of lead-free dielectric energy-storage materials. In this study, large-polarization 0.65Na(0.5)Bi(0.5)TiO(3)-0.35SrTiO(3) (NBST) and high-efficiency 0.45Na(0.5)Bi(0.5)TiO(3)-0.55Sr(0.7)Bi(0.2)TiO(3) (NBSBT) ceramics were selected to construct layered ceramics. The effect of the number of interfaces on breakdown behavior and polarization was investigated by controlling the stacking of layered ceramics. The single-layer NBST/NBSBT alternately stacked layered ceramics achieved a maximum breakdown strength of 242 kV cm(-1), resulting in high recoverable energy storage density (4.48 J cm(-3)) and efficiency (similar to 90%). Meanwhile, the energy storage performance of NBST/NBSBT layered ceramics also exhibits excellent frequency (10-200 Hz) and temperature (25-125 degrees C) stability. The results prove that the large number of interfaces is beneficial to obtain high breakdown strength and maximum polarization, which brings new enlightenment to further improve the energy storage density of NBT-based materials.

引用

页码：15292 / 15300

页数：9

共 65 条

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