Journal
JOURNAL OF MATERIALS SCIENCE
Volume 51, Issue 2, Pages 1153-1160Publisher
SPRINGER
DOI: 10.1007/s10853-015-9446-6
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Funding
- National Nature Science Foundation [51172187]
- SPDRF [20116102130002, 20116102120016]
- 111 Program of MOE [B08040]
- Xi'an Science and Technology Foundation [XBCL-1-08]
- SKLP Foundation [KP201421]
- Project of Key Areas of Innovation team in Shaanxi Province [2014KCT-12]
- Fundamental Research Funds for the Central Universities [3102014JGL01002, 3102014JGY01004]
- Aeronautical Science Foundation of China [2013ZF53072]
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Large energy-storage density is observed in BaZrO3 (BZ)-modified 0.80Bi(0.5)Na(0.5)TiO(3)-0.20Bi(0.5)K(0.5)TiO(3) (BNBK) lead-free ferroelectric (FE) ceramics synthesized by conventional solid-state reaction. The energy-storage property of (1 - x)BNBK-xBZ has been investigated. Certain content of BZ can enhance the energy-storage property of BNBK by enhancing the breakdown strength. The largest energy-storage density W (1) = 0.73 J/cm(3) and efficiency of energy storage eta = 0.75 at E = 70 kV/cm are achieved in the 0.96BNBK-0.04BZ, which is significantly higher than that of BNT-based and lead-containing FE materials reported. Its energy-storage density exhibits the superior thermal stability with temperature range of 30-100 A degrees C. Those properties promise that the environmental friendly (1 - x)BNBK-xBZ ceramics are candidate for applications of energy-storage devices.
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