TY - JOUR
T1 - Enhanced energy storage and dielectric properties of Bi0.487Na0.427K0.06Ba0.026TiO3-xCeO2 anti-ferroelectric ceramics
AU - Liu, Guocai
AU - Fan, Huiqing
AU - Dong, Guangzhi
AU - Shi, Jing
AU - Chang, Qi
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/4/15
Y1 - 2016/4/15
N2 - 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.
AB - 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.
KW - Ceramics
KW - Dielectric relaxation
KW - Energy storage materials
KW - Temperature stability
UR - http://www.scopus.com/inward/record.url?scp=84954348447&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2015.12.260
DO - 10.1016/j.jallcom.2015.12.260
M3 - 文章
AN - SCOPUS:84954348447
SN - 0925-8388
VL - 664
SP - 632
EP - 638
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -