Excellent energy storage density and efficiency in lead-free Sm-doped BaTiO3-Bi(Mg0.5Ti0.5)O3ceramics

被引：67

作者：

Liu, Zhi-Gang ^{[1
,2
]}

Tang, Zhen-Hua ^{[1
]}

Hu, Song-Cheng ^{[1
]}

Yao, Di-Jie ^{[1
]}

Sun, Fei ^{[3
,4
]}

Chen, De-Yang ^{[3
,4
]}

Guo, Xiao-Bin ^{[1
]}

Liu, Qiu-Xiang ^{[1
]}

Jiang, Yan-Ping ^{[1
]}

Tang, Xin-Gui ^{[1
]}

机构：

[1] Guangdong Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Sch Light Ind & Chem Engn, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China

[3] South China Normal Univ, South China Acad Adv Optoelect, Inst Adv Mat, Guangzhou 510006, Guangdong, Peoples R China

[4] South China Normal Univ, South China Acad Adv Optoelect, Guangdong Prov Key Lab Opt Informat Mat & Technol, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2020年 / 8卷 / 38期

基金：

中国国家自然科学基金;

关键词：

HIGH-POWER DENSITY; FREE CERAMICS; DIELECTRIC-PROPERTIES; OPTICAL TRANSPARENCY; BREAKDOWN STRENGTH; BATIO3; CAPACITORS; PERFORMANCE; BEHAVIORS; STABILITY;

D O I：

10.1039/d0tc03035j

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Progress in energy storage ceramics for applications has been of interest owing to their clean green nature and excellent ferroelectric/dielectric performances. In this study, lead-free Sm-doped 0.95BaTiO(3)-0.05Bi(Mg0.5Ti0.5)O-3(BT-BMT-xSm) relaxor ferroelectric ceramics were synthesized and confirmed to be an appropriate material for storage devices. After the introduction of Sm(2)O(3)into BT-BMT ceramics, their hysteresis loops gradually shrank and became slender, which is beneficial to achieving high efficiency energy storage in ceramic capacitors. The maximum recoverable energy density for the BT-BMT-xSm (x= 0.03) sample reached 3.86 J cm(-3)at normal temperature, and its corresponding energy efficiency reached 81.6%. Moreover, it was found from impedance spectroscopy that the breakdown field strength is related to the oxygen defect content in the samples. Ceramic samples with fewer defects have better insulation performance, which means that a high breakdown field strength will be obtained. With proper doping, enhanced relaxor behaviour and breakdown field strength were obtained to achieve excellent energy storage properties.

引用

页码：13405 / 13414

页数：10

共 54 条

[1] Excellent optical transparency of potassium-sodium niobate-based lead-free relaxor ceramics induced by fine grains [J].