摘要
The CaF_(2)-4LiF additive was added into SrTiO_(3)ceramics in order to decrease the sintering temperature for compact pulse power application.The crystalline structure,microstructure and energy storage performance of sintered ceramics were studied.Incorporating CaF_(2)-4LiF additive to SrTiO_(3)ceramics contributes to a notably enhancement of the energy storage density.The great enhancement in energy storage density occurred due to the notable increase in breakdown strength and the refinement of microstructure.With 2 at%additive,the samples exhibited an average breakdown strength of 31.8kV/mm,and an energy storage density of 1.212 J/cm^(3)which is about 1.4 times higher than pure SrTiO_(3).
基金
The authors would like to thank the support of Key Program of Natural Science Foundation of China(No.50932004)
Natural Science Foundation of China(No.50872102)
the Key Grant Project of Chinese Ministry of Education(No.309022)
the Program for New Century Excellent Talents in University(No.NCET-08-0808).
