Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives
Ge Wang,Zhilun Lu,Zhilun Lu,Yong Li,Linhao Li,Hongfen Ji,Antonio Feteira,Di Zhou,Dawei Wang,Dawei Wang,Shujun Zhang,Ian M. Reaney +11 more
TLDR
In this article, the fundamental principles of energy storage in dielectric capacitors are introduced and a comprehensive review of the state-of-the-art is presented. But the authors do not consider the use of lead-free materials in high-temperature applications, since their toxicity raises concern over their use in consumer applications.Abstract:
Materials exhibiting high energy/power density are currently needed to meet the growing demand of portable electronics, electric vehicles and large-scale energy storage devices. The highest energy densities are achieved for fuel cells, batteries, and supercapacitors, but conventional dielectric capacitors are receiving increased attention for pulsed power applications due to their high power density and their fast charge-discharge speed. The key to high energy density in dielectric capacitors is a large maximum but small remanent (zero in the case of linear dielectrics) polarization and a high electric breakdown strength. Polymer dielectric capacitors offer high power/energy density for applications at room temperature, but above 100 °C they are unreliable and suffer from dielectric breakdown. For high-temperature applications, therefore, dielectric ceramics are the only feasible alternative. Lead-based ceramics such as La-doped lead zirconate titanate exhibit good energy storage properties, but their toxicity raises concern over their use in consumer applications, where capacitors are exclusively lead free. Lead-free compositions with superior power density are thus required. In this paper, we introduce the fundamental principles of energy storage in dielectrics. We discuss key factors to improve energy storage properties such as the control of local structure, phase assemblage, dielectric layer thickness, microstructure, conductivity, and electrical homogeneity through the choice of base systems, dopants, and alloying additions, followed by a comprehensive review of the state-of-the-art. Finally, we comment on the future requirements for new materials in high power/energy density capacitor applications.read more
Citations
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Giant energy-storage density with ultrahigh efficiency in lead-free relaxors via high-entropy design
TL;DR: In this article , the authors proposed a high-entropy strategy to design local polymorphic distortion including rhombohedral-orthorhombic-tetragonal-cubic multiphase nanoclusters and random oxygen octahedral tilt, resulting in ultrasmall polar nanoregions, an enhanced breakdown electric field, and delayed polarization saturation.
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High-entropy enhanced capacitive energy storage
Bingbing Yang,Yang Zhang,Hao Pan,Wenlong Si,Qinghua Zhang,Zhonghui Shen,Yong Yu,Shun Lan,Fanqi Meng,Yiqian Liu,Houbing Huang,Jiaqing He,Lin Gu,Shujun Zhang,Long Qing Chen,Jing Zhu,Ce-Wen Nan,Yuanhua Lin +17 more
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High energy density, temperature stable lead-free ceramics by introducing high entropy perovskite oxide
ashanti,Shiyu Zhou,Shiyu Zhou,Yongping Pu,Xuqing Zhang,Yu Shi,Ziyan Gao,Yu Feng,Guodong Shen,Xueyun Wang,Dawei Wang +10 more
TL;DR: In this article, bismuth-based high entropy compound (HEC), Bi(Zn0.2Al 0.2Sn0.1)O3 (BZMASZ), was introduced into BaTiO3-Na0.5Bi0.3 (BT-NBT) matrix, in order to improve the comprehensive energy storage performance.
Journal ArticleDOI
High energy density, temperature stable lead-free ceramics by introducing high entropy perovskite oxide
TL;DR: In this article , bismuth-based high entropy compound (HEC), Bi(Zn 0.2Mg0.2Sn0.1)O3 (BZMASZ), was introduced into BaTiO3-Na 0.5Bi0.3 (BT-NBT) matrix, in order to improve the comprehensive energy storage performance.
Journal ArticleDOI
Ultrahigh energy storage density in lead-free relaxor antiferroelectric ceramics via domain engineering
Jie Jiang,Xiangjun Meng,Ling Li,Shun Guo,Ming Huang,Ji Zhang,Jing Wang,Xihong Hao,Heguo Zhu,Shan-Tao Zhang +9 more
TL;DR: In this paper, a relaxor antiferroelectric NaNbO3-BiFeO3 bulk dielectric ceramics was constructed for advanced energy storage capacitors.
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