Study of the structure, electrical properties, and energy storage performance of ZnO-modified Ba0.65Sr0.245Bi0.07TiO3 Pb-free ceramics
| Autor: | Qiao Ai, Li Jin, Gang Liu, Jinghui Gao, Haoyan Meng, Jinzhu Hu, Linjiang Yu, Dequan Li, Yang Li, Ling Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science Process Chemistry and Technology Doping 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Energy storage Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Electric field visual_art 0103 physical sciences Barium titanate Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 46:8-16 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.08.111 |
| Popis: | Barium titanate ceramic is frequently used as a ferroelectric material and can be applied in the pulse power field in energy storage devices. Its properties, including dielectric, ferroelectric, and energy storage properties, can be significantly improved through doping. In this work, we prepared a series of (1-x)Ba0.65Sr0.245Bi0.07TiO3-xZnO (x = 0.005, 0.01, 0.02, 0.03) lead-free bulk relaxor ferroelectric ceramics by a traditional die-pressing processing route. The uniformity of the grain sizes for these ceramics was improved, and the grains were refined when a certain amount of ZnO was introduced into BaTiO3-based ceramics. In addition, the breakdown strength was improved in the case where the relaxor behavior was not significantly improved. It should be noted that the sample doped with 0.02 mol Zn showed the maximum room-temperature storage density (1.51 J/cm3) at the largest electric field strength (210 kV/cm). At the same time, this ceramic exhibited good stability to temperature (60–150 °C) and frequency (10–100 Hz) variations, as well as fantastic fatigue resistance (10,000 charge-discharge cycles). This paper presents in-depth studies of the structure, morphology, electrical properties, and energy storage performance of ZnO-modified BaTiO3-based ceramics. |
| Databáze: | OpenAIRE |
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