材料科学
陶瓷
反铁电性
储能
微观结构
铸造
粒度
兴奋剂
复合材料
大气温度范围
航程(航空)
光电子学
电介质
热力学
铁电性
功率(物理)
物理
作者
Mingyuan Zhao,Jing Wang,Hao Yuan,Zehan Zheng,Lei Zhao
标识
DOI:10.1021/acsami.2c16021
摘要
AgNbO3-based Pb-free antiferroelectric (AFE) ceramics have attracted increasing interest owing to their excellent potential in energy storage applications. Herein, a high recoverable energy storage density (Wrec) of 7.62 J/cm3 is realized in La-doped AgNbO3 ceramics prepared via tape casting. The high Wrec is attributed to high breakdown strength Eb of 380 kV/cm induced by dense microstructure as well as fine grain size and enhanced AFE stability stemming from M2 phase and reduced tolerance factor t. The high Wrec exceeding 6 J/cm3 was maintained in a wide temperature range of 20–150 °C and exhibited frequency stability with less than 8% variation in a range of 1–200 Hz. The discharge energy density Wd exhibited temperature stability at 30–110 °C with less than 9% variation. Our research provides a good method for producing AgNbO3-based ceramics having high energy storage performances.
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