Broadening the dielectric stability temperature range of BNBST relaxor ferroelectric ceramics by rare earth Ce doping for energy storage

被引:0
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作者
Wen Zhu
Wei Deng
Zhipeng Li
Zong-Yang Shen
Xuhai Shi
Fusheng Song
Wenqin Luo
Zhumei Wang
Yueming Li
机构
[1] Jingdezhen Ceramic University,China National Light Industry Key Laboratory of Functional Ceramic Materials, Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, Advanced Ceramic Materials Research Institute, School of
来源
Journal of Materials Science: Materials in Electronics | 2022年 / 33卷
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摘要
(Bi0.5Na0.5)0.65(Ba0.3Sr0.7)0.35Ti1-XCeXO3 (abbreviated as BNBSTC100x, x = 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08) ceramics were prepared by a solid-state reaction method. The effect of rare earth Ce-doping content on the phase structure, microstructure, dielectric properties and energy storage characteristics of ceramics was investigated. All BNBSTC100x ceramics had a single pseudocubic perovskite structure with high bulk density. With the increase of Ce-doping content, the dielectric peak of BNBSTC100x ceramics was gradually suppressed and flattened, which effectively broadened the dielectric stability temperature range. Meanwhile, the P-E hysteresis loop of the ceramics gradually changed to slim with Ce content, and the optimized energy storage properties were achieved in BNBSTC4 ceramics with recoverable energy storage density Wrec = 1.15 J/cm3 and efficiency η = 81% under a relatively low electric field of 100 kV/cm. Furthermore, the BNBSTC4 ceramics also exhibited good temperature, frequency and fatigue cycle stability, which should be a good candidate ceramic material for pulse power capacitors used in a wider temperature range.
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页码:26861 / 26869
页数:8
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