BaTiO3-NaNbO3 energy storage ceramics with an ultrafast charge-discharge rate and temperature-stable power density

IF 3.3 3区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER Superlattices and Microstructures Pub Date : 2022-01-01 DOI:10.20517/microstructures.2022.21
Peiyao Zhao, Longtu Li, Xiao-hui Wang, Prof. Xiaohui Wang, Shiqing Deng, R. Zuo, Shujun Zhang
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引用次数: 6

Abstract

Dielectric capacitors with ultrafast charge-discharge rates are extensively used in electrical and electronic systems. To meet the growing demand for energy storage applications, researchers have devoted significant attention to dielectric ceramics with excellent energy storage properties. As a result, the awareness of the importance of the pulsed discharge behavior of dielectric ceramics and conducting characterization studies has been raised. However, the temperature stability of pulsed discharge behavior, which is significant for pulsed power applications, is still not given the necessary consideration. Here, we systematically investigate the microstructures, energy storage properties and discharge behaviors of nanograined (1-x)BaTiO3-xNaNbO3 ceramics prepared by a two-step sintering method. The 0.60BaTiO3-0.40NaNbO3 ceramics with relaxor ferroelectric characteristics possess an optimal discharge energy density of 3.07 J cm-3, a high energy efficiency of 92.6%, an ultrafast discharge rate of 39 ns and a high power density of 100 MW cm-3. In addition to stable energy storage properties in terms of frequency, fatigue and temperature, the 0.60BaTiO3-0.40NaNbO3 ceramics exhibit temperature-stable power density, thereby illustrating their significant potential for power electronics and pulsed power applications.
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具有超快充放电速率和温度稳定功率密度的BaTiO3-NaNbO3储能陶瓷
具有超快充放电速率的介质电容器广泛应用于电气和电子系统中。为了满足日益增长的储能应用需求,具有优异储能性能的介电陶瓷受到了研究人员的极大关注。因此,人们对介电陶瓷脉冲放电特性和导电特性研究的重要性有了更高的认识。然而,对脉冲功率应用具有重要意义的脉冲放电行为的温度稳定性仍然没有得到必要的考虑。本文系统地研究了两步烧结法制备的纳米(1-x)BaTiO3-xNaNbO3陶瓷的微观结构、储能性能和放电行为。具有弛豫铁电特性的0.60BaTiO3-0.40NaNbO3陶瓷的最佳放电能量密度为3.07 J cm-3,高能量效率为92.6%,超快放电率为39 ns,功率密度为100 MW cm-3。除了在频率、疲劳和温度方面具有稳定的储能性能外,0.60BaTiO3-0.40NaNbO3陶瓷还具有温度稳定的功率密度,从而表明其在电力电子和脉冲功率应用方面的巨大潜力。
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来源期刊
Superlattices and Microstructures
Superlattices and Microstructures 物理-物理:凝聚态物理
CiteScore
6.10
自引率
3.20%
发文量
35
审稿时长
2.8 months
期刊介绍: Micro and Nanostructures is a journal disseminating the science and technology of micro-structures and nano-structures in materials and their devices, including individual and collective use of semiconductors, metals and insulators for the exploitation of their unique properties. The journal hosts papers dealing with fundamental and applied experimental research as well as theoretical studies. Fields of interest, including emerging ones, cover: • Novel micro and nanostructures • Nanomaterials (nanowires, nanodots, 2D materials ) and devices • Synthetic heterostructures • Plasmonics • Micro and nano-defects in materials (semiconductor, metal and insulators) • Surfaces and interfaces of thin films In addition to Research Papers, the journal aims at publishing Topical Reviews providing insights into rapidly evolving or more mature fields. Written by leading researchers in their respective fields, those articles are commissioned by the Editorial Board. Formerly known as Superlattices and Microstructures, with a 2021 IF of 3.22 and 2021 CiteScore of 5.4
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