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Outstanding Energy Storage Performance of Na0.5Bi0.5TiO3-BaTiO3-(Sr0.85Bi0.1)(Mg1/3Nb2/3)O3 Lead-Free Ceramics
被引:46
|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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页码:9362 / 9367
页数:6
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