期刊
CERAMICS INTERNATIONAL
卷 43, 期 16, 页码 13541-13546出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.07.060
关键词
Lead-free ceramics; Bi0.5Na0.5TiO3; Energy storage; Fatigue behavior
资金
- National Science Foundation of China (NSFC) [51332003, 51472169]
Energy storage properties of {Bi-0.5[(Na0.8K02)(1-z)Li-z](0.5)}(0.96)Sr-0.04(Ti1-x-yTaxNby)O-3 (BNKLSTTN-x/y/z) lead-free ceramics are investigated. It is found that Ta performs better than Nb in the case of their energy storage density values, and the addition of optimum Li contents can enhance the energy storage properties by enhancing the dielectric breakdown strength (DBS). Enhanced energy storage density of 1.60 J/cm(3) under a low electric field of 90 kV/cm is achieved in BNKLSTTN-0.025/0/0.10 samples, and the fatigue-free properties are also observed. In addition, the BNKLSTTN-0.025/0/0.10 samples show the enhanced temperature dependence of energy storage density. These results indicate that the BNKLSTTN-x/y/z ceramics are one of the most promising lead-free materials for energy storage applications.
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