Boosted energy storage densities in lead-free Na0.5Bi0.5TiO3-based thick film ceramics via the compositional and microstructural tailoring

被引：5

作者：

Niu, Xiang ^{[1
]}

Jiang, Yuleng ^{[1
,2
]}

Liang, Wei ^{[1
]}

Liu, Huanwei ^{[1
]}

Jian, Xiaodong ^{[1
,3
]}

Chen, Xianyi ^{[1
]}

Zeng, Wenhan ^{[1
]}

Xu, Mingtao ^{[1
]}

Qie, Dan ^{[4
]}

Zhu, Zichun ^{[5
]}

Liu, Yufeng ^{[3
]}

Tang, Yi ^{[1
]}

Gong, Weiping ^{[6
]}

Zhao, Xiaobo ^{[2
]}

Yao, Yingbang ^{[2
]}

Liang, Bo ^{[1
]}

Tao, Tao ^{[1
]}

Lu, Sheng-Guo ^{[1
,2
]}

机构：

[1] Guangdong Univ Technol, State Key Lab Precis Elect Mfg Technol & Equipment, Guangdong Prov Res Ctr Smart Mat & Energy Convers, Sch Mat & Energy, Guangzhou 510006, Peoples R China

[2] Guangdong Univ Technol, Sch Integrated Circuits, Guangzhou 510006, Peoples R China

[3] Minist Ind & Informat Technol, Sci & Technol Reliabil Phys & Applicat Elect Compo, Elect Res Inst 5, Guangzhou 510610, Peoples R China

[4] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China

[5] Natl Univ Singapore, Dept Mat Sci & Engn, 9 Engn Dr 1, Singapore 117575, Singapore

[6] Huizhou Univ, Guangdong Prov Key Lab Elect Funct Mat & Devices, Huizhou 516001, Guangdong, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 496卷

关键词：

Lead-free; Na(0.5)Bi(0.5)TiO(3)based thick film ceramics; Tape-casting; Multiphase coexistence; Energy storage density; Energy storage efficiency; LOW ELECTRIC-FIELDS; ANTIFERROELECTRIC CERAMICS; BREAKDOWN STRENGTH; THERMAL-STABILITY; HIGH-EFFICIENCY; GRAIN-SIZE; PERFORMANCE; TEMPERATURE; IMPROVEMENT; STRATEGY;

D O I：

10.1016/j.cej.2024.154047

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Developing ecologically benign lead-free dielectrics with overall outstanding energy storage properties (ESP) is a fundamentally significant demand and challenge for the applications in pulse power systems. Herein, a new type of lead-free (0.74-x)Bi0.5Na0.5TiO3-0.06BaTiO(3)-0.2SrTiO(3)-xBi(Mg0.5Zr0.5)O-3 (NBT-xBMZ) relaxor ferroelectric thick film ceramics were designed and prepared via compositional and microstructural optimization. Doped Bi(Mg0.5Zr0.5)O-3 (BMZ) effectively widened the bandgap, introduced polar nanoregions, enhanced the relaxor ferroelectric characteristics, improved the impedances, and ultimately improved the dielectric breakdown strength (DBS) as well as the ESP. As confirmed by both the selected area electron diffraction patterns and the Rietveld refinement of X-ray diffraction patterns, multiphase coexistence structure was successfully constructed, resulting in merged polarization and delayed polarization saturation. Multiphase coexistence structure, pinched polarization-electric field hysteresis loops and ultrahigh DBS collectively boost the ESP. Remarkably, a recoverable energy storage density of 15.79 J/cm(3) and an energy storage efficiency of 92.86 % were achieved in NBT-0.22BMZ thick film. Benefiting from the microstructural tailoring, excellent thermal stability (20-160 degrees C), frequency stability (1-200 Hz), and fatigue endurance (>10(4) cycles) were realized for the same composition. Additionally, the NBT-0.22BMZ thick film also exhibited a large power density of 582.47 MW/cm(3) and an ultrafast discharge speed of similar to 44.0 ns. This work provides a novel strategy to develop next-generation dielectric capacitors with superior energy storage properties for applications in advanced pulse power systems.

引用

页数：15

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