Simultaneously high-energy storage density and responsivity in quasi-hysteresis-free Mn-doped Bi0.5Na0.5TiO3-BaTiO3-(Sr0.7Bi0.20.1 )TiO3 ergodic relaxor ceramics
Simultaneously high-energy storage density and responsivity in quasi-hysteresis-free Mn-doped Bi0.5Na0.5TiO3-BaTiO3-(Sr0.7Bi0.20.1 )TiO3 ergodic relaxor ceramics
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DOI：
10.1080/21663831.2018.1457095
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发表时间：
2018-01-01
影响因子：
8.3
通讯作者：
Zeng, Huarong
中科院分区：
文献类型：
--
作者：
Li, Feng;Zhai, Jiwei;Zeng, Huarong
在Mn掺杂的0.62Bi（0.5）Na（0）.5TiO 3 -0.06BaTiO（3）-0.32（Sr 0.7Bi 0.20.1）TiO 3各态历经弛豫陶瓷中，同时获得了高的储能密度、响应度和效率，即W-R = 1.07J/cm（3），磅= 119 J/（kV m（2）），eta = 92%.适当的Mn掺杂有利于提高击穿场强。此外，温度和不同的气氛依赖的阻抗谱结果表明，氧空位的导电机制为所有样品。用X射线光电子能谱和电顺磁共振谱证实了Mn的价态以及Mn离子与氧空位的共轭作用。上述结果表明，通过引入缺陷复合物可以获得具有高储能性能的准无磁滞回线。[图表]冲击状态通过引入缺陷复合物，在准无滞后陶瓷中同时获得高储能密度W-R = 1.07J/cm（3），响应率δ = 119 J/（kVm（2））和效率eta = 92%。
High-energy storage density, responsivity and efficiency, i.e. W-R = 1.07 J/cm(3), pound = 119J/(kV m(2)) and eta = 92%, were simultaneously obtained in Mn-doped 0.62Bi(0.5)Na(0).5TiO3-0.06BaTiO(3)-0.32 (Sr0.7Bi0.20.1)TiO3 ergodic relaxor ceramics. Appropriate Mn doping was beneficial to enhance breakdown field strength. Moreover, temperature and different atmosphere-dependent impedance spectroscopy results indicated that oxygen vacancies were the conductivity mechanism for all samples. The valence state of Mn together with the conjugation between Mn ion and oxygen vacancies was confirmed by X-ray photoelectron spectra and electric paramagnetic resonance. The above results indicate that quasi-hysteresis-free loops with high-energy storage performances can be obtained by the induced defect complex.[GRAPHICS]IMPACT STATEMENTHigh-energy storage density W-R = 1.07J/cm(3), responsivity 5 = 119J/(kVm(2)) and efficiency eta = 92% were simultaneously obtained in quasi-hysteresis-free ceramics by introducing defect complex.