| High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly | |
| Zhang, Chao1,2; Du, Quanpei1,2; Li, Wenru1,2; Su, Dong1,2; Shen, Meng1,2; Qian, Xiaoshi3; Li, Bing4; Zhang, Haibo5; Jiang, Shenglin1,2,6; Zhang, Guangzu1,2 | |
| Corresponding Author | Jiang, Shenglin(jsl@hust.edu.cn) ; Zhang, Guangzu(zhanggz@hust.edu.cn) |
| 2020-09-01 | |
| Source Publication | JOURNAL OF MATERIOMICS
 |
| ISSN | 2352-8478 |
| Volume | 6Issue:3Pages:618-627 |
| Abstract | 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. |
| Keyword | Electrocaloric effect Core-shell structure Lead-free ceramics Internal stress High temperature stability |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Materials Science ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000544759500006 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139693 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiang, Shenglin; Zhang, Guangzu |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment