期刊
CERAMICS INTERNATIONAL
卷 48, 期 12, 页码 16792-16799出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.02.229
关键词
Solid state reaction method; Ferroelectric properties; Dielectric properties; Energy-storage performance
资金
- Natural Science Foundation of China [51372042, 51872053]
- Guangdong Provincial Nat-ural Science Foundation [2015A030308004]
- NSFC-Guangdong Joint Fund [U1501246]
- Dongguan City Frontier Research Project [2019622101006]
- Advanced Energy Science and Technology Guangdong Provincial Laboratory Foshan Branch-Foshan Xianhu Laboratory Open Fund-Key Project [XHT2020-011]
This study demonstrates the use of BZNO doping to enhance the energy storage density and efficiency of ceramic capacitors.
Dielectric capacitors with a high power density and fast charging/discharging rate are regarded as alternatives for energy storage applications. However, lower energy storage density and efficiency are critical issues that have to be addressed for applications as energy storage capacitors. (0.7-x)BiFeO3 - 0.3BaTiO3 - xBaZn1/3Nb2/3O3 + 0.1 wt%MnO2 (BFO-BTO-BZNO) ceramics were prepared via the conventional solid-state reaction approach. Both the temperature dependence of dielectric constant and slim P-E hysteresis loops confirm that (BFO-BTOBZNO) ceramics were relaxor ferroelectrics. Furthermore, the energy storage densities and efficiencies of (BFOBTO-BZNO) were calculated based on the hysteresis loops and direct measurements of the discharged pulse currents measured at room temperature. The results indicate that the doping of BZNO can adjust the maximum and remnant polarizations of BFO-BTO based bulk ceramics, thereby affecting the energy storage properties. And the maximum energy storage density obtained was 1.61 J/cm3 at 180 kV/cm and room temperature.
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