Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7897738 | Journal of the European Ceramic Society | 2018 | 23 Pages |
Abstract
Lead-free 0.9BaTiO3-0.1(Bi0.9Na0.1)(In0.8Zr0.2)O3 (0.9BT-0.1BNIZ) ferroelectric relaxor ceramic was synthesized by solid-state reaction method. A dense microstructure and fine grain size was obtained with addition of BNIZ content. The dielectric behaviors indicated the dominance of ergodic relaxor phase. The 0.9BT-0.1BNIZ ceramic was found to possess an enhanced recoverable energy density (WRâ¼1.33â¯J/cm3) and efficiency (ηâ¼88%) under 18â¯kV/mm at room temperature. What's more, WR is maintained â¥0.53â¯J/cm3 with ηâ¯â¥â¯94% under 10â¯kV/mm and the variation of WR is less than 15% over 25â¼140â¯Â°C. The high stability of energy storage properties is mainly ascribed to the characteristics of ergodic relaxor phase. The stored energy was released in sub-microseconds (â¼0.19â¯Î¼s). The superior current density (CDâ¼796â¯A/cm2) and the power density (PDâ¼39.8â¯MW/cm3) were obtained simultaneously. The enhanced WR and the superior charge-discharge performances strongly demonstrate that the BT-based ceramics are promising candidates of high-power pulse capacitor applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Feng Li, Mingxing Zhou, Jiwei Zhai, Bo Shen, Huarong Zeng,