Excellent energy storage properties in non-stoichiometric Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics

Shunshun Jiang ¹Ji Zhang ¹Jing Wang ²Shan-Tao Zhang³

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作者信息

1. School of Materials Science and Engineering,Nanjing University of Science&Technology,Nanjing 210094,China
2. State Key Laboratory of Mechanics and Control of Mechanical Structures,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
3. National Laboratory of Solid State Microstructures,Department of Materials Science and Engineering,College of Engineering and Applied Science&Jiangsu Key Laboratory of Artificial Functional Materials&Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China
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Abstract

The rapid development of high-power and pulsed-power techniques inspires extensive investigates on high-performance ceramic-based capacitors.However,the low recoverable energy density(Wrec)hampers their wider applications.Herein,the non-stoichiometric Bi0.5Na0.5TiO3-based ceramics were designed and studied.The proper introduction of oxygen vacancies facilitated activating defect dipole,giving rise to reduced remanent polarization.Consequently,the optimal composition exhibited an exceptional high Wrec of 8.3 J/cm3,a high efficiency of 85%,and excellent anti-fatigue and thermal reliability.This work provides an efficient approach to explore ceramic capacitors with high capacitive energy storage performances.

Key words

Non-stoichiometric/Bi0.5Na0.5TiO3/Ceramic capacitor/Energy density/Thermal stability

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基金项目

National Natural Science Foundation of China(12004181)

National Natural Science Foundation of China(52073144)

Natural Science Foundation of Jiangsu Province(BK20200473)

Natural Science Foundation of Jiangsu Province(BK20201301)

Fundamental Research Funds for the Central Universities(30922010309)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

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