稀土基复合钙钛矿Sm(Mg0.5Zr0.5)O3改性优化NaNbO3陶瓷储能性能

IF 3.3 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Superlattices and Microstructures Pub Date : 2023-09-03 DOI:10.20517/microstructures.2023.19

Mingzhao Xu, Dafu Zeng, Xiang Wang, Peng Nong, Yue Pan, Qinpeng Dong, Jiaming Wang, Huanfu Zhou, Xiuli Chen

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引用次数: 0

摘要

研究人员经常通过掺杂铋基复合材料来提高NaNbO3陶瓷的储能性能。最近的研究表明，稀土元素，如La和Sm，可以抑制残余极化。本研究设计了一种(1-x)NaNbO3-x Sm(Mg0.5Zr0.5)O3陶瓷体系。Sm(Mg0.5Zr0.5)O3 (SMZ)的掺杂提高了NaNbO3陶瓷的电阻、活化能和带隙，提高了击穿场强，优化了NaNbO3陶瓷的储能效率。在本研究中，0.92NaNbO3-0.08 SMZ在560 kV/cm下的储能密度为4.3/cm3，储能效率为85.6%。当x = 0.15时，样品表现出超高的击穿场强和储能效率(分别为720 kV/cm和91%)。此外，0.08 SMZ样品的超快释放率为0.9 (57 ns)，电流密度(777.1 A/cm2)和功率密度(69.93 MW/cm3)高。在高性能储能电容器中具有实际应用前景。

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Optimizing the energy storage performance of NaNbO3 ceramics by rare-earth-based composite perovskite Sm(Mg0.5Zr0.5)O3 modification

Researchers often improve the energy storage performance of NaNbO3 ceramics through doping with Bi-based composites. Recent studies have shown that rare-earth elements, such as La and Sm, can suppress remanent polarization. In this study, a (1-x )NaNbO3-x Sm(Mg0.5Zr0.5)O3 ceramic system was designed. Doping with Sm(Mg0.5Zr0.5)O3 (SMZ) increases the resistance, activation energy, and bandgap of NaNbO3 ceramics, improves the breakdown field strength, and optimizes the energy storage efficiency of NaNbO3 ceramics. In this study, 0.92NaNbO3-0.08 SMZ achieved an energy storage density of 4.3/cm3 and an energy storage efficiency of 85.6% at 560 kV/cm. When x = 0.15, the sample exhibited an ultrahigh breakdown field strength and energy storage efficiency (720 kV/cm and 91%, respectively). In addition, the 0.08 SMZ sample had an ultrafast release rate of t 0.9 (57 ns), high current density (777.1 A/cm2), and high power density (69.93 MW/cm3). It has practical application prospects in high-performance energy storage capacitors.

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来源期刊

Superlattices and Microstructures 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.20%

发文量

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