Outstanding Energy Storage Performance of Na0.5Bi0.5TiO3-BaTiO3-(Sr0.85Bi0.1)(Mg1/3Nb2/3)O3 Lead-Free Ceramics

被引：47
作者：
Cao, Wenjun [1 ]
Li, Tianyu [1 ]
Chen, Pengfei [1 ]
Wang, Chunchang [1 ]
机构：
[1] Anhui Univ, Sch Mat Phys & Engn, Lab Dielect Funct Mat, Hefei 230601, Peoples R China
来源：
ACS APPLIED ENERGY MATERIALS | 2021年 / 4卷 / 09期
基金：
中国国家自然科学基金;
关键词：
lead-free; Na0.5Bi0.5TiO3; ceramics; dielectric properties; energy storage properties; high power density; STABLE DIELECTRIC-PROPERTIES; LOW ELECTRIC-FIELDS; COLOSSAL PERMITTIVITY; DENSITY; EFFICIENCY; STABILITY; CAPACITOR; CAPABILITY; STRENGTH; NB;
D O I：
10.1021/acsaem.1c01566
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lead-free (1- x)(0.94Na0.5Bi0.5TiO3-0.06BaTiO3)-x(Sr0.85Bi0.1)(Mg1/3Nb2/3)O-3 ((1 - x)(NBT-BT)-xSBMN) ceramics are synthesized using the traditional solid-state reaction method. The introduction of SBMN leads to a dense microstructure with small mean grain size. The temperature-dependent dielectric spectrum reveals that the sample with x = 0.24 shows the best temperature stability with T-S occurring around room temperature. A large recoverable energy storage density value of 3.05 J/cm(3), high efficiency of 89%, and excellent temperature (25140 degrees C)/frequency (1-100 Hz) stabilities are simultaneously achieved in the ceramic. The variation of recoverable energy storage density is less than 7% in the temperature range of 25-140 degrees C. The ceramic also has a high power density of 67.86 MW/cm(3).
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收藏
页码：9362 / 9367
页数：6
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