Advancing energy storage properties in barium titanate-based relaxor ferroelectric ceramics through a stagewise optimization strategy

被引：35
作者：
Wang, Wen [1 ]
Yang, Yule [1 ]
Qian, Jin [2 ]
Shi, Wenjing [1 ]
Huang, Yunyao [1 ]
Jing, Ruiyi [1 ]
Zhang, Leiyang [1 ]
Pan, Zhongbin [3 ]
Laletin, Vladimir [4 ]
Shur, Vladimir [5 ]
Zhai, Jiwei [2 ]
Jin, Li [1 ]
机构：
[1] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Elect Sci & Engn, Elect Mat Res Lab,Key Lab Minist Educ, Xian 710049, Peoples R China
[2] Tongji Univ, Sch Mat Sci & Engn, Funct Mat Res Lab, Shanghai 201804, Peoples R China
[3] Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315211, Peoples R China
[4] Natl Acad Sci Belarus, Inst Tech Acoust, Vitebsk 210009, BELARUS
[5] Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia
来源：
CHEMICAL ENGINEERING JOURNAL | 2024年 / 488卷
基金：
俄罗斯科学基金会; 中国国家自然科学基金;
关键词：
Dielectric capacitors; Energy storage; (Ba 0.8 Sr 0.2 )TiO 3; Viscous polymer process; LEAD-FREE CERAMICS; FREE ANTIFERROELECTRIC CERAMICS; CHARGE-DISCHARGE CAPABILITY; LINEAR DIELECTRIC CERAMICS; HIGH-EFFICIENCY; EXCELLENT STABILITY; DENSITY; PERFORMANCE; CAPACITORS; MULTILAYERS;
D O I：
10.1016/j.cej.2024.151043
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To propel advanced energy storage devices for high pulse power systems, overcoming the pivotal challenges of concurrently augmenting energy storage density (Wrec) and efficiency (eta) in relaxor ferroelectric (RFE) ceramics is imperative. This study delineates a stagewise collaborative optimization strategy aimed at enhancing the energy storage property (ESP) of BaTiO3 (BT)-based (Ba0.8Sr0.2)TiO3 (BST) ceramics, namely, integrating (Na0.73Bi0.09)NbO3 (NBN) with secondary processing technology. Capitalizing on the inherent strong polarity from A-site Bi3+ ions, the high valence, and wide-bandgap of B-sites introduce local random electric fields and impede the transition of electrons, generating polar nanoregions and expanding breakdown thresholds. Furthermore, the application of the viscous polymer process (VPP) in BST-NBN ceramics seeks to diminish porosity and enhance compactness, thereby sequentially improving polarization difference (Delta P) and breakdown strength (Eb). Guided by a stepwise optimization strategy, the anticipated energy storage characteristics (Wrec = 8.5 J/cm3, eta = 93.4 %) under 640 kV/cm are realized in 0.91BST-0.09NBN-VPP ceramics, ensuring thermal reliability (20-120 degrees C) superior to most BT-based ceramics. This research marks a substantial advancement in the pursuit of more efficient and reliable ceramic dielectric capacitors, cruscial for powering modern high-power electronic devices.
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页数：10
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