Structure and dielectric properties of NBT-xBT-ST lead-free ceramics for energy storage
| Autor: | Wen-Qin Luo, Zong-Yang Shen, Yuan-Ying Yu, Fu-Sheng Song, Zhu-Mei Wang, Yue-Ming Li |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Journal of Advanced Dielectrics, Vol 8, Iss 6, Pp 1820004-1-1820004-5 (2018) |
| Druh dokumentu: | article |
| ISSN: | 2010-135X 2010-1368 2010135X |
| DOI: | 10.1142/S2010135X18200047 |
| Popis: | (0.74−x)(Na0.5Bi0.5)TiO3-xBaTiO3-0.26SrTiO3 (x=0∼0.1) (abbreviated as NBT-xBT-ST) lead-free ceramics were fabricated by a solid-state reaction method. The effect of Ba doping amount x on the structure and energy storage properties of NBT-xBT-ST ceramics were investigated. All the NBT-xBT-ST ceramics showed single perovskite structure with a pseudocubic phase. Ba doping effectively suppressed grain growth, in favor of forming small and uniform grains. The ceramics with a composition of x=0.04, an optimized energy storage density (γ=0.47J/cm3) and efficiency (η=48.67%), under an applied electric field of 50kV/cm, should be a candidate for solid-state compact pulsed power capacitor materials. |
| Databáze: | Directory of Open Access Journals |
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