High Energy Storage Density and Optical Transparency of Microwave Sintered Homogeneous (Na0.5Bi0.5)(1–x)BaxTi(1–y)SnyO3 Ceramics
High Energy Storage Density and Optical Transparency of Microwave Sintered Homogeneous (Na0.5Bi0.5)(1–x)BaxTi(1–y)SnyO3 Ceramics
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DOI：
10.1021/acssuschemeng.7b04754
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发表时间：
2018-03
影响因子：
8.4
通讯作者：
Y. Pu;Lei Zhang;Yongfei Cui;Min Chen
中科院分区：
文献类型：
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作者：
Y. Pu;Lei Zhang;Yongfei Cui;Min Chen
采用冷等静压和微波烧结相结合的方法（CIP&MS策略）制备了均匀的（Na0.5Bi0.5）（1-x）TiO_2（1-y）SnyO_3陶瓷，并对其相变和铁电性能进行了研究。X射线衍射（XRD）分析表明，当x < 0.3时，快速烧结抑制了Na0.5Bi0.5TiO3（NBT）和BaSnO 3（BSN）之间的反应。当x < 0.3时，陶瓷样品的晶粒尺寸约为1 μm，EDS图谱显示陶瓷样品中元素分布均匀。x = 0.2的样品具有适度的介电常数（<2000）、低介电损耗（tan δ < 0.015）以及高扩散和色散弛豫样行为。随着BSN的加入，体系的弱极性相逐渐增加，能量损失逐渐减小。当x = 0.2时，由于样品的均匀性好，在可见光区的透过率可达50%以上，放电能量密度高达2.347 J/cm 3，同时Pm高达35.75 μC/cm 2。然后，一个家.
Homogeneous (Na0.5Bi0.5)(1–x)BaxTi(1–y)SnyO3 ceramics were densified by a combination of cold isostatic pressing and microwave sintering (CIP&MS strategy), and their phase transition and ferroelectric properties were investigated. X-ray diffraction (XRD) analysis proves that the reaction between Na0.5Bi0.5TiO3 (NBT) and BaSnO3 (BSN) was suppressed by fast sintering when x < 0.3. The grain size of the homogeneous ceramic sample was about 1 μm, and the uniform element distribution was detected by EDS mapping when x < 0.3. The x = 0.2 sample possesses a modest dielectric constant (∼2000), low dielectric loss (tan δ < 0.015), and highly diffusive and dispersive relaxor-like behavior. The weakly polar phase gradually increases and the energy loss gradually decreases with BSN addition. When x = 0.2, a high transparency in the visible spectra (∼50%) and the high discharge energy density (WD) of 2.347 J/cm3 were achieved as a result of high homogeneous sample, meanwhile Pm was as high as 35.75 μC/cm2. Then, a hom...