Enhanced energy storage and dielectric properties of Bi0.487Na0.427K0.06Ba0.026TiO3-xCeO2 anti-ferroelectric ceramics

Guocai Liu, Huiqing Fan, Guangzhi Dong, Jing Shi, Qi Chang

科研成果: 期刊稿件文章同行评审

65 引用 (Scopus)

摘要

In order to hunt for the promising materials in energy-storage field, we prepared a series of compositions Bi0.487Na0.427K0.06Ba0.026TiO3-xCeO2 (BNTC1000x, x = 1.8, 2.2, 2.6, 3.0 wt%) by the solid-state reaction method. CeO2 addition degraded the ferroelectricity of initial components and all these samples exhibited antiferroelectricity at room temperature. The optimum energy-storage density of 0.94 J/cm3 was obtained at BNTC22 with the external electric field of 75 kV/cm. In addition, the energy-storage property not only possessed good temperature stability but also maintained high values over 0.81 J/cm3 around 20-120 °C. These characteristics indicated that Bi0.487Na0.427K0.06Ba0.026TiO3-xCeO2 system could be the promising lead-free materials for energy-storage capacitor application. The investigation on dielectric properties suggested that the dielectric relaxation behavior was involved in BNTC1000x system and concerned with oxygen vacancy migration.

源语言英语
页(从-至)632-638
页数7
期刊Journal of Alloys and Compounds
664
DOI
出版状态已出版 - 15 4月 2016

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