首页|Excellent energy storage properties in non-stoichiometric Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics
Excellent energy storage properties in non-stoichiometric Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics
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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.
School of Materials Science and Engineering,Nanjing University of Science&Technology,Nanjing 210094,China
State Key Laboratory of Mechanics and Control of Mechanical Structures,College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
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
National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu ProvinceFundamental Research Funds for the Central Universities
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