Reverse boundary layer capacitor model in glass/ceramic composites for energy storage applications
Reverse boundary layer capacitor model in glass/ceramic composites for energy storage applications
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DOI：
10.1063/1.4775493
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发表时间：
2013-01
影响因子：
3.2
通讯作者：
Xiaoyong Wei;Haixue Yan;Tong Wang;Q. Hu;G. Viola;S. Grasso;Q. Jiang;Li Jin;Zhuo Xu;M. Reec
中科院分区：
文献类型：
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作者：
Xiaoyong Wei;Haixue Yan;Tong Wang;Q. Hu;G. Viola;S. Grasso;Q. Jiang;Li Jin;Zhuo Xu;M. Reec
提出了用于介电储能的玻璃/陶瓷复合材料的反向边界层电容器(RBLC)结构模型，即晶界的电导率高于颗粒的电导率。通过引入玻璃添加剂作为电导率高于陶瓷颗粒的晶界，由于电导率的差异，颗粒间的稳定电场可以根据需要大于晶界。因此，在RBLC-型砖墙模型中，由于场的分布，预计击穿场会增加。讨论了RBLC模型的等效电路、晶界电导率与能量密度的关系以及低损耗频率范围。模拟结果表明，与常规的中空玻璃相复合材料相比，RBLC方法在整体能量密度方面具有优势。
Reverse boundary layer capacitor (RBLC) configuration model, where the grain boundary has a higher electrical conductivity than the grain, is proposed in glass/ceramic composites for dielectric energy storage applications. By introducing glass additives as grain boundaries with electrical conductivity higher than ceramic grains, the steady electric field across grains can be larger than grain boundaries as desired due to the conductivity difference. The breakdown field is thus expected to increase in the RBLC-type brick wall model because of the field distribution. The equivalent circuit, grain boundary conductivity dependence of energy density, low-loss frequency range of the RBLC model are discussed. The simulation results suggest that the RBLC approach has advantages in overall energy density, compared with normal insulating glass phase composites.