The grain size and domain structure synergistic effect on BNT based lead-free ceramics with high energy storage properties

被引：7
作者：
Lu, Ying [1 ]
Wang, Xiaochun [1 ]
Li, Peng [1 ]
Du, Juan [1 ]
Fu, Peng [1 ]
Hao, Jigong [1 ]
Li, Wei [1 ]
机构：
[1] Liaocheng Univ, Sch Mat Sci & Engn, Shandong Dept Educ, Lab Sensit Mat & Devices, Liaocheng 252059, Peoples R China
来源：
JOURNAL OF ENERGY STORAGE | 2024年 / 104卷
基金：
中国国家自然科学基金;
关键词：
BNT-based ceramic; Relaxor ferroelectrics; Energy storage; Domain structure; Stability; LOW ELECTRIC-FIELDS; THERMAL-STABILITY; FERROELECTRIC PROPERTIES; ULTRAFAST DISCHARGE; DENSITY; EFFICIENCY; PERFORMANCE; IMPROVEMENT;
D O I：
10.1016/j.est.2024.114508
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Ceramic capacitors having great energy-storage performance (ESP) are receiving more and more concern in the electronics industry. In this paper, high ESP is obtained in 0.6Bi(0.5)Na(0.5)TiO(3)-0.4Bi(0.2)Sr(0.7)TiO(3) (BNT-BST)-based samples through doping the Sr(Sc0.5Nb0.5)O-3 (SSN) component. The results show that the recoverable energy density (W-rec) and efficiency (eta) of the materials will be significantly improved by adjusting the relaxation characteristics and domain structure engineering. In addition, the breakdown filed of ceramics is also improved by inhibition grain growth. The BNT-BST-0.15SSN ceramic has achieved high comprehensive ESP (W-rec = 5.49 J/cm(3), eta = 93.6 %) at an electric field of 455 kV/cm. Meanwhile, the ceramic shows outstanding temperature (25-160 degrees C), frequency (1-500 Hz) and cycle (1-10(4)) stability (the variation of W-rec/eta < 5 %). Therefore, the BNT-BST-0.15SSN ceramic is expected to be a suitable candidate of environmentally friendly materials as advanced pulsed capacitor application.
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页数：10
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