Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 38, Issue 5, Pages 2304-2311Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.11.053
Keywords
Solid state reaction; Relaxor behavior; Energy density; Lead-free
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Funding
- National Natural Science Foundation of China [51372144, 51641207]
- Key Program of Innovative Research Team of Shaanxi Province [2014KCT-06]
- National Undergraduate Training Programs of China for Innovation and Entrepreneurship [201710708009]
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(1-x)NBT-xBSN (0.1 <= x <= 0.35) ceramics were prepared by solid state methods and their energy storage properties and high-temperature capacitor applications were systematically investigated. All samples showed a perovskite structure and the structure transformed to lower symmetry orthorhombic phase (x >= 0.1) from rhombohedral phase (x < 0.1) to with the addition of BSN. The more addition content of BSN significantly decreases phase transition temperature T-m of NBT ceramics. The x = 0.25 sample exhibits a stable relative permittivity of 1605 +/- 15% in a broad temperature range of 38 degrees C to 319 degrees C. With increasing BSN concentration, the slope of the P-E loops and the energy loss gradually decreases. When x = 0.25, a high breakdown strength of 190 kV/cm and the maximum discharge energy density of 1.91 J/cm(3) were obtained, of which the energy efficiency was as high as 86.4%. Thus, it was believed that our work could provide a significant guidance for designing the new system for energy storage.
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