High electrocaloric effect in barium titanate-sodium niobate ceramics with core-shell grain assembly
文献类型：期刊论文
| 作者 | Zhang, Chao2,3; Du, Quanpei2,3; Li, Wenru2,3; Su, Dong2,3; Shen, Meng2,3; Qian, Xiaoshi4; Li, Bing5; Zhang, Haibo1; Jiang, Shenglin2,3,6; Zhang, Guangzu2,3 |
| 刊名 | JOURNAL OF MATERIOMICS
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 6期号:3页码:618-627 |
| ISSN号 | 2352-8478 |
| 关键词 | Electrocaloric effect Core-shell structure Lead-free ceramics Internal stress High temperature stability |
| DOI | 10.1016/j.jmat.2020.05.002 |
| 通讯作者 | Jiang, Shenglin(jsl@hust.edu.cn) ; Zhang, Guangzu(zhanggz@hust.edu.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000544759500006 |
| 资助机构 | 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 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/139694]  |
| 专题 | 金属研究所_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, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China 2.Huazhong Univ Sci & Technol, Engn Res Ctr Funct Ceram MOE, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China 3.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China 4.Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab SYNL Mat Sci, Shenyang 110016, 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. |
入库方式： OAI收割
来源：金属研究所
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