High energy storage, structure evolution and dielectric properties of complex perovskite solid solution (1-x) NaNbO3-xBi (Zn2/3Nb1/3) O3

IF 1.7 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Electroceramics Pub Date : 2022-02-21 DOI:10.1007/s10832-022-00279-6

Guoliang Xue, Xuefan Zhou, Dou Zhang

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引用次数: 5

Abstract

NaNbO₃-based lead-free ceramics show great potential in energy storage and piezoelectric applications due to the antiferroelectric and ferroelectric features. However, pure NaNbO₃ usually shows lossy hysteresis loops because of the metastable antiferroelectric phase at room temperature. In this work, Bi(Zn_2/3Nb_1/3)O₃ was introduced into NaNbO₃ to modulate the phase structure, dielectric, and energy storage properties. The addition of Bi(Zn_2/3Nb_1/3)O₃ changed the phase structure from orthorhombic to pseudo-cubic, decreased the grain size from ~ 20 μm to ~ 1 μm, shifted the temperature of dielectric peak from 360℃ to room temperature, and led to much-reduced polarization hysteresis and improved breakdown strength. With the addition of 9 mol% Bi(Zn_2/3Nb_1/3)O₃, the maximum recoverable energy density of 3.3 J/cm³ was achieved under 33.5 kV/mm. These results provide a feasible route to design and fabricate new NaNbO₃-based energy storage ceramics.

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复合钙钛矿固溶体(1-x) NaNbO3-xBi (Zn2/3Nb1/3) O3的高能量储存、结构演化和介电性能

纳米bo3基无铅陶瓷具有反铁电和铁电特性，在储能和压电领域具有巨大的应用潜力。然而，由于室温下的亚稳反铁电相，纯净的NaNbO3通常表现出有损耗的磁滞回线。在这项工作中，Bi(Zn2/3Nb1/3)O3被引入到NaNbO3中来调制相结构、介电和储能性能。Bi(Zn2/3Nb1/3)O3的加入使材料的相结构由正交晶型变为拟立方晶型，晶粒尺寸由~ 20 μm减小到~ 1 μm，介电峰温度由360℃升高到室温，极化滞后大大降低，击穿强度提高。当添加9mol % Bi(Zn2/3Nb1/3)O3时，在33.5 kV/mm条件下，最大可回收能量密度为3.3 J/cm3。这些结果为设计和制造新型纳米bo3储能陶瓷提供了一条可行的途径。

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来源期刊

Journal of Electroceramics 工程技术-材料科学：硅酸盐

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

5.7 months

期刊介绍： While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including: -insulating to metallic and fast ion conductivity -piezo-, ferro-, and pyro-electricity -electro- and nonlinear optical properties -feromagnetism. When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice. The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.