High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly

doi:10.1016/j.jmat.2020.05.002

IMR OpenIR

	High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly
	Zhang, Chao 1,2; Du, Quanpei 1,2; Li, Wenru 1,2; Su, Dong 1,2; Shen, Meng 1,2; Qian, Xiaoshi 3; Li, Bing 4; Zhang, Haibo 5; Jiang, Shenglin 1,2,6; Zhang, Guangzu 1,2
通讯作者	Jiang, Shenglin(jsl@hust.edu.cn) ; Zhang, Guangzu(zhanggz@hust.edu.cn)
	2020-09-01
发表期刊	JOURNAL OF MATERIOMICS
ISSN	2352-8478
卷号	6 期号:3 页码:618-627
摘要	Electrocaloric effect (ECE) is promising in realizing solid-state cooling as an alternative to the conventional refrigeration with environmentally harmful coolant and low efficiency. High ECE in lead-free ferroelectric ceramics is highly desirable for the EC cooling. In this work, different from the researches that tune the ECE by conventional compositional design or external stress engineering, we fabricated the (1-x)BaTiO3-xNaNbO(3) (BTO-xNN) lead-free ceramics with a core-shell grain structure arising from the inhomogeneous stoichiometry of element distribution, leading to the internal compressing stress in the grains. It is interesting that the phase transition behavior, including the phase transition temperature and the diffusion property, is regulated by the core-shell grain structure induced internal stress, which can be capitalized on for the favorable ECE. Cooperated with 0.02 NN, a high ECE, e.g. adiabatic temperature change (Delta T) of 3.6 K and isothermal entropy change (Delta S) of 4.5 J kg(-1) K-1, is attained in the BTO ceramic. As the internal stress further increases with more NN, the BTO-0.06NN exhibits an extremely stable ECE with a variety rate below +/- 4% in a wide temperature range from 300 K to 360 K. This work provides a novel approach to explore pronounced ECE in lead-free ferroelectrics for eco-friendly refrigeration. (C) 2020 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
关键词	Electrocaloric effect Core-shell structure Lead-free ceramics Internal stress High temperature stability
资助者	National Science Foundation of China ; Fund from Science, Technology and Innovation Commission of Shenzhen Municipality ; Innovation Fund of WNLO ; Fundamental Research Funds for the Central Universities ; Thousand Young Talent Program ; Double First-Rate Program ; Prospective Research Program ; Student Innovation Center at Shanghai Jiao Tong University ; Key Research Program of Frontier Sciences, CAS ; China Academy of Space Technology Analytical ; Analytical and Testing Center, Huazhong University of Science and Technology
DOI	10.1016/j.jmat.2020.05.002
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[51972125] ; National Science Foundation of China[51772108] ; National Science Foundation of China[51972126] ; National Science Foundation of China[61675076] ; Fund from Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20180507182248925] ; Innovation Fund of WNLO ; Fundamental Research Funds for the Central Universities[2019KFYRCPY126] ; Fundamental Research Funds for the Central Universities[2018KFYYXJJ052] ; Thousand Young Talent Program[BE0200005] ; Double First-Rate Program[WF220402017] ; Prospective Research Program[AF0200246] ; Student Innovation Center at Shanghai Jiao Tong University ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-JSC002] ; China Academy of Space Technology Analytical ; Analytical and Testing Center, Huazhong University of Science and Technology
WOS研究方向	Chemistry ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000544759500006
出版者	ELSEVIER
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/139695
专题	中国科学院金属研究所
通讯作者	Jiang, Shenglin; Zhang, Guangzu
作者单位	1.Huazhong Univ Sci & Technol, Engn Res Ctr Funct Ceram MOE, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China 2.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab SYNL Mat Sci, Shenyang 110016, Peoples R China 5.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China 6.Shenzhen Huazhong Univ Sci & Technol Res Inst, Shenzhen 518057, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chao,Du, Quanpei,Li, Wenru,et al. High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly[J]. JOURNAL OF MATERIOMICS,2020,6(3):618-627.
APA	Zhang, Chao.,Du, Quanpei.,Li, Wenru.,Su, Dong.,Shen, Meng.,...&Zhang, Guangzu.(2020).High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly.JOURNAL OF MATERIOMICS,6(3),618-627.
MLA	Zhang, Chao,et al."High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly".JOURNAL OF MATERIOMICS 6.3(2020):618-627.