ca0.7 la0.2 tio3改性nanbo3基无铅反铁电陶瓷的高能量存储性能

IF 2.1 3区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Advanced Dielectrics Pub Date : 2022-11-17 DOI:10.1142/s2010135x22420048

C. Liang, Chang-hao Wang, W. Cao, Hanyu Zhao, Feng Li, Chunchang Wang

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引用次数: 4

摘要

本工作采用固相反应法制备了(1[公式:见文])(0.92NaNbO3-0.08BaTiO3) -[公式:见文]Ca[公式:见文]La[公式:见文]TiO3 (NNBT -[公式:见文]CLT)陶瓷。对其结构、介电性能和储能性能进行了研究。在室温下，具有正交相的NNBT - 0.25CLT陶瓷具有极小的晶粒尺寸和致密的微观结构。在360 kV/cm的电场作用下，样品同时获得了3.1 J/cm3的大[公式:见文]和91.5%的高[公式:见文]。此外，样品的储能性能在25-140℃[公式:见文]和5-500 Hz的频率范围内表现出热稳定性。充放电试验表明，该陶瓷具有965 a /cm2的大电流密度[公式:见文]和154 MW/cm3的功率密度[公式:见文]。研究表明，NNBT-0.25CLT陶瓷在脉冲功率器件领域具有潜在的应用前景。

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High energy storage properties in Ca0.7La0.2TiO3-modified NaNbO3-based lead-free antiferroelectric ceramics

In this work, (1 [Formula: see text])(0.92NaNbO3–0.08BaTiO3)–[Formula: see text]Ca[Formula: see text]La[Formula: see text]TiO3 (NNBT – [Formula: see text]CLT) ceramics were successfully designed and prepared by the solid-state reaction method. Investigations on the structure, dielectric, and energy storage properties were performed. The NNBT – 0.25CLT ceramic with orthorhombic phase at room temperature was found to exhibit extremely small grain size and compacted microstructure. A large [Formula: see text] of 3.1 J/cm3 and a high [Formula: see text] of 91.5% under the electric field of 360 kV/cm were achieved simultaneously in the sample. In addition, the energy storage performance of the sample exhibits thermal stability over the temperature range of 25–140[Formula: see text]C and the frequency range of 5–500 Hz. The charge and discharge tests reveal that the ceramic shows a large current density [Formula: see text] of 965 A/cm2 and power density [Formula: see text] of 154 MW/cm3. This work demonstrates that the NNBT–0.25CLT ceramic is a prospective energy storage material for potential application in the field of pulsed power devices.

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来源期刊

Journal of Advanced Dielectrics PHYSICS, APPLIED-

CiteScore

3.80

自引率

6.50%

发文量

审稿时长

18 weeks

期刊介绍： The Journal of Advanced Dielectrics is an international peer-reviewed journal for original contributions on the understanding and applications of dielectrics in modern electronic devices and systems. The journal seeks to provide an interdisciplinary forum for the rapid communication of novel research of high quality in, but not limited to, the following topics: Fundamentals of dielectrics (ab initio or first-principles calculations, density functional theory, phenomenological approaches). Polarization and related phenomena (spontaneous polarization, domain structure, polarization reversal). Dielectric relaxation (universal relaxation law, relaxor ferroelectrics, giant permittivity, flexoelectric effect). Ferroelectric materials and devices (single crystals and ceramics). Thin/thick films and devices (ferroelectric memory devices, capacitors). Piezoelectric materials and applications (lead-based piezo-ceramics and crystals, lead-free piezoelectrics). Pyroelectric materials and devices Multiferroics (single phase multiferroics, composite ferromagnetic ferroelectric materials). Electrooptic and photonic materials. Energy harvesting and storage materials (polymer, composite, super-capacitor). Phase transitions and structural characterizations. Microwave and milimeterwave dielectrics. Nanostructure, size effects and characterizations. Engineering dielectrics for high voltage applications (insulation, electrical breakdown). Modeling (microstructure evolution and microstructure-property relationships, multiscale modeling of dielectrics).