High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi0.5Na0.5TiO3-based ceramics

doi:10.1039/c9ra04069b

	High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi0.5Na0.5TiO3-based ceramics
	Wu, Yichen; Wang, Genshui; Jiao, Zheng; Fan, Yuzhu; Peng, Ping; Dong, Xianlin
刊名	RSC ADVANCES
	2019-07-10
卷号	9 期号:37 页码:21355
ISSN号	2046-2069
DOI	10.1039/c9ra04069b
文献子类	Article
英文摘要	As a promising candidate material replacing Pb(ZrTi)O-3 (PZT), the lead-free Bi0.5Na0.5TiO3 (BNT) system exhibits outstanding piezoelectric and ferroelectric properties. However, the weak thermal stability of these electric properties hampers its practical applications. In this work, we designed and prepared novel Nb-doped 0.76Bi(0.5)Na(0.5)TiO(3)-0.24Bi(0.5)K(0.5)TiO(3) (BNT-BKT) ceramics with superior temperature stability of electric properties. Both strain as well as discharging properties of 5% Nb-doped BNT-BKT ceramics varied less than 3% and 12.5% respectively from room temperature to 160 degrees C, ascribed to the enlarged gap between the depolarized temperature (T-d or TF-R) and the maximum dielectric temperature (T-m). In addition, we investigated the impacts of Nb doping on the phase transition, dielectric, piezoelectric and ferroelectric behaviors of BNT-BKT ceramics in detail. Temperature dependent dielectric spectrums indicated that T-d decreased below room temperature with Nb modifying, revealing that the phase structure transformed from ferroelectric into ergodic relaxor. Accordingly, the maximum strain value of 0.21% and recoverable energy storage of 1.2 J cm(-3) were simultaneously acquired at the critical composition of 5% Nb incorporation. Our results provide an effective means of obtaining BNT-based ceramics with simultaneously thermally stable strain and discharge properties for wide temperature actuator and capacitor applications.
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26984]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Wu, Yichen,Wang, Genshui,Jiao, Zheng,et al. High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi0.5Na0.5TiO3-based ceramics[J]. RSC ADVANCES,2019,9(37):21355.
APA	Wu, Yichen,Wang, Genshui,Jiao, Zheng,Fan, Yuzhu,Peng, Ping,&Dong, Xianlin.(2019).High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi0.5Na0.5TiO3-based ceramics.RSC ADVANCES,9(37),21355.
MLA	Wu, Yichen,et al."High electrostrictive properties and energy storage performances with excellent thermal stability in Nb-doped Bi0.5Na0.5TiO3-based ceramics".RSC ADVANCES 9.37(2019):21355.