Structure and energy storage properties of Mn-doped (Ba,Sr)TiO3-MgO composite ceramics
Structure and energy storage properties of Mn-doped (Ba,Sr)TiO3-MgO composite ceramics
复制标题
Mn掺杂(Ba,Sr)TiO3-MgO复合陶瓷的结构与储能性能
DOI：
10.1007/s10854-017-6600-8
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Pang Li-Xia
中科院分区：
文献类型：
--
作者：
Li Wen-Bo;Zhou Di;Pang Li-Xia
寻找具有高介质击穿强度和放电能量密度的高功率电容器材料已被广泛探索。采用传统固相烧结工艺制备了Ba0.4Sr0.6（Ti0.996Mn0.004）O3-xwt % MgO（0 ≤ x ≤ 6）复相陶瓷。详细研究了其结构和储能性能。结果表明，Mn掺杂的Ba_（0. 4）Sr_（0. 6）TiO_3中加入MgO后，放电能量密度（Wrec）和储能效率（η）明显提高。随着MgO含量的增加，Ba_（0.4）Sr_（0.6）（Ti_（0.996）Mn_（0.004））O_3-MgO复合材料的击穿电场（Eb）得到了显著提高。Ba0.4Sr0.6（Ti0.996Mn0.004）O3- 2wt%MgO陶瓷具有优异的储能性能，在高Eb~ 300 kV/cm时，Wrec~ 2.014 J/cm 3，η ~ 88.6%。这项工作大大增加了Eband Wrecof BST基材料在高功率储能应用中的应用。
The search for materials with high dielectric breakdown strength and discharged energy density for high power capacitors has been widely explored. In this work, composite ceramics of Ba0.4Sr0.6(Ti0.996Mn0.004)O3–x wt% MgO (0 ≤ x ≤ 6) were prepared by conventional solid state sintering process. Structure and energy storage properties were investigated in detail. It was found that the discharged energy density (Wrec) and energy storage efficiency (η) was obviously enhanced in Mn-doped in Ba0.4Sr0.6TiO3with MgO addition. As the concentration of MgO increased, the breakdown electric field (Eb) of Ba0.4Sr0.6(Ti0.996Mn0.004)O3–MgO composite was greatly improved. The Ba0.4Sr0.6(Ti0.996Mn0.004)O3–2 wt% MgO ceramic exhibited excellent energy storage properties with a Wrec~ 2.014 J/cm3and a η ~ 88.6% at a high Eb~ 300 kV/cm. This work significantly increased the Eband Wrecof BST-based materials for high power energy storage applications.