期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 37, 期 10, 页码 3303-3311出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.03.071
关键词
Lead-free; Energy storage; Relaxation; Dielectric properties; Ceramics
资金
- National Natural Science Foundation of China [51572159]
- Chinese Postdoctoral Science Foundation [2016M590916]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
- Science and Technology Foundation of Weiyang District of Xi'an City [201605]
- Industrialization Foundation of Education Department of Shaanxi Provincial Government [16JF002]
A series of (1-x)(0.65BaTiO(3)-0.35Bi(0.5)Na(0.5)TiO(3))-XNa0.73Bi0.09NbO3 ((1-x)BBNT-xNBN) (x = 0-0.14) ceramics were designed and fabricated using the conventional solid-state sintering method. The microstructure, dielectric property, relaxor behavior and energy storage property were systematically investigated. X-ray diffraction results reveal a pure perovskite structure and dielectric measurements exhibit a relaxor behavior for the (1-x)BBNT-xNBN ceramics. The slim polarization electric field (P-E) loops were observed in the samples with x >= 0.02 and the addition of Na0.73Bi0.09NbO3 (NBN) could decrease the remnant polarization (P-r) of the (1-x)BBNT-xNBN ceramics obviously. The sample with x = 0.08 exhibits the highest energy storage density of 1.70 J/cm(3) and the energy storage efficiency of 82% at 172kV/cm owing to its submicron grain size and high relative density. These results show that the (1-x)BBNT-xNBN ceramics may be promising lead-free materials for high energy storage density capacitors. (C) 2017 Elsevier Ltd. All rights reserved.
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