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Multifunctionality of lead-free BiFeO3-based ergodic relaxor ferroelectric ceramics: High energy storage performance and electrocaloric effect
Li, Feng; Zhai, Jiwei; Shen, Bo; Zeng, Huarong; Jian, Xiaodong; Lu, Shengguo
2019-09-30
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume803Pages:185
SubtypeArticle
AbstractWith industrializations speeding up, the need for materials with multiple functions are growing because of ever-increasing complexity of electronic devices. The BiFeO3- based ferroelectric relaxor ceramic as a multifunctional material has been ignored thus far. This work innovatively investigates the multifunctionality in a novel lead-free BiFeO3 -BaTiO3-(Sr0.7Bi0.2)TiO3 relaxor ferroelectric ceramics since a high energy storage performance and electrocaloric effect are simultaneously obtained. Results show that a large adiabatic temperature change Delta similar to 1.44 K is achieved. The total energy storage density (Ws) reaches to -2.34 J/cm 3 , recoverable energy storage density (W-R) are similar to 1.74 J/cm(3), accompanied by a high efficiency eta similar to 74%. The charge- discharge characterizations indicate that this ceramic possesses an ultrahigh current density of 1184.7 A/cm(2) and power density of 59.2 MW/cm(3). In particular, the discharging speed is ultra-fast and the discharging period tau is in range of 25-30 ns at room temperature. This work strongly indicates that the studied ceramic is a promising candidate in multifunctional applications such as cooling devices and pulsed power electronics and also enrich the species of the lead-free materials in multifunctionality. (C) 2019 Elsevier B.V. All rights reserved.
KeywordBiFeO3 Multifunctionality Electrocaloric effect Energy storage Charge- discharge
DOI10.1016/j.jallcom.2019.05.367
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26814
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, Feng,Zhai, Jiwei,Shen, Bo,et al. Multifunctionality of lead-free BiFeO3-based ergodic relaxor ferroelectric ceramics: High energy storage performance and electrocaloric effect[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,803:185.
APA Li, Feng,Zhai, Jiwei,Shen, Bo,Zeng, Huarong,Jian, Xiaodong,&Lu, Shengguo.(2019).Multifunctionality of lead-free BiFeO3-based ergodic relaxor ferroelectric ceramics: High energy storage performance and electrocaloric effect.JOURNAL OF ALLOYS AND COMPOUNDS,803,185.
MLA Li, Feng,et al."Multifunctionality of lead-free BiFeO3-based ergodic relaxor ferroelectric ceramics: High energy storage performance and electrocaloric effect".JOURNAL OF ALLOYS AND COMPOUNDS 803(2019):185.
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