Lead-free (0.93-x)Bi0.5Na0.5TiO3-0.07BaTiO3-xNaNbO3 relaxor ferroelectrics for energy storage applications

被引：10

作者：

Chu, Bingkai ^{[1
]}

Tang, Xu ^{[1
]}

Hao, Jigong ^{[1
]}

Li, Peng ^{[1
]}

Fu, Peng ^{[1
]}

Chen, Chong ^{[1
]}

Li, Wei ^{[1
]}

Li, Guorong ^{[2
]}

机构：

[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfinem, Shanghai 200050, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2020年 / 31卷 / 24期

基金：

中国国家自然科学基金;

关键词：

CERAMICS; EFFICIENCY; RAMAN; SPECTROSCOPY; TEMPERATURE; IMPEDANCE; STABILITY; BEHAVIOR; DENSITY;

D O I：

10.1007/s10854-020-04779-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, (0.93 - x)Bi0.5Na0.5TiO3-0.07BaTiO(3)-xNaNbO(3) (BNT-0.07BT-xNN) lead-free energy storage ceramics were designed on the basis of the phase diagram of this system. The phase structure and energy storage property were studied. The NN substitution into BNT-BT increased the crystal structure symmetry and induced an obvious disruption of the ferroelectric order. At x = 0.20, an extremely slim P-E hysteresis loop along with a large recoverable energy storage density (W-rec) of 2.08 J/cm(3) and a high energy storage effificiency (eta) of 81% was obtained at a moderate electric field of 160 kV/cm. The BNT-BT-0.02NN ceramic possessed a high discharge energy density (W-d similar to 1.44 J/cm(3)) and a fast discharge speed (t(0.9) similar to 153 ns) at an electric field of 160 kV/cm. These results show that the BNT-0.07BT-xNN material may be a promising candidate for capacitors.

引用

页码：22676 / 22686

页数：11

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