Lead-free BaTiO3-Bi0.5Na0.5TiO3-Na0.73Bi0.09NbO3 relaxor ferroelectric ceramics for high energy storage |
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| Affiliation: | 1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People''s Republic of China;2. University of the Chinese Academy of Sciences, Beijing 100049, People''s Republic of China;3. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, People''s Republic of China;1. School of Materials Science and Engineering, Xi''an University of Science and Technology, Xi''an 710054, China;2. School of Electro-Mechanical Engineering, Xidian University, Xi''an 710071, China;3. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China;1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China;2. School of optical and electronic information, Huazhong University of Science and Technology, Wuhan, 430074, China;1. Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science & Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China;2. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. School of Materials and Energy, Southwest University, Chongqing, 400715, PR China;2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi''an Jiaotong University, Xi''an, 710049, PR China;3. Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, UK;4. State Key Laboratory of Electrical Insulation and Power Equipment, Xi''an Jiaotong University, Xi''an, 710049, PR China |
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| Abstract: | A series of (1-x)(0.65BaTiO3-0.35Bi0.5Na0.5TiO3)-xNa0.73Bi0.09NbO3 ((1-x)BBNT-xNBN) (x = 0–0.14) ceramics were designed and fabricated using the conventional solid-state sintering method. The microstructure, dielectric property, relaxor behavior and energy storage property were systematically investigated. X-ray diffraction results reveal a pure perovskite structure and dielectric measurements exhibit a relaxor behavior for the (1-x)BBNT-xNBN ceramics. The slim polarization electric field (P-E) loops were observed in the samples with x ≥ 0.02 and the addition of Na0.73Bi0.09NbO3 (NBN) could decrease the remnant polarization (Pr) of the (1-x)BBNT-xNBN ceramics obviously. The sample with x = 0.08 exhibits the highest energy storage density of 1.70 J/cm3 and the energy storage efficiency of 82% at 172 kV/cm owing to its submicron grain size and high relative density. These results show that the (1-x)BBNT-xNBN ceramics may be promising lead-free materials for high energy storage density capacitors. |
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| Keywords: | Lead-free Energy storage Relaxation Dielectric properties Ceramics |
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