(1-x)Bi0.5Na0.47Li0.03TiO3-xNaNbO3 lead-free ceramics with superior energy storage performances and good temperature stability

被引：23
作者：
Lu, Ying [1 ]
Li, Peng [1 ]
Du, Juan [1 ]
Fu, Peng [1 ]
Hao, Jigong [1 ]
Zeng, Huarong [2 ,3 ]
Li, Wei [1 ]
机构：
[1] Liaocheng Univ, Coll Mat Sci & Engn, Liaocheng 252059, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China
[3] Univ Chinese Acad Sci, Mat & Optoelect Res Ctr, Beijing 100039, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Lead-free ceramics; Energy storage; Relaxor; Temperature stability; LOW ELECTRIC-FIELDS; BNT-BASED CERAMICS; EXCELLENT STABILITY; THERMAL-STABILITY; DENSITY; EFFICIENCY; OPTIMIZATION; CAPACITORS;
D O I：
10.1016/j.ceramint.2022.05.118
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dielectric capacitors show great potential in superior energy storage devices. However, the energy density of these capacitors is still inadequate to meet the requirement of energy storage applications. In this study, the Bi0.5Na0.47Li0.03TiO3-xNaNbO3 (BNLT-xNN) ceramics were prepared via conventional solid-phase reaction. Results showed that NN can efficaciously enhance the breakdown strength (Eb) and the relaxation behavior of the BNLT ceramic because of the broken ferroelectric long-range order. When x = 0.3, the maximum Eb reached 350 kV/cm, at which the 0.7BNLT-0.3NN ceramic exhibited the high recoverable energy storage density (Wrec) of 4.83 J/cm3 and great efficiency (eta) of 78.9%. The ceramic demonstrated good temperature stability at 20 degrees C160 degrees C and excellent fatigue resistance. Additionally, the 0.7BNLT-0.3NN ceramic presented high power density (PD; -77.58 MW/cm3), large current density (CD; -861.99 A/cm2), and quite short discharge time (t0.9; -0.090 mu s). These results indicated that the 0.7BNLT-0.3NN material has excellent energy storage properties and various application prospects.
引用
收藏
页码：24716 / 24724
页数：9
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