Effect of K2O content on breakdown strength and energy-storage density in K2O-BaO-Nb2O5-SiO2 glass-ceramics

被引：28

作者：

Wang, Haitao ^{[1
]}

Liu, Jinhua ^{[1
,2
]}

Zhai, Jiwei ^{[1
]}

Shen, Bo ^{[1
]}

Pan, Zhongbin ^{[1
]}

Yang, Ke ^{[1
]}

Liu, Jingran ^{[1
]}

机构：

[1] Tongji Univ, Key Lab Adv Civil Engn Mat, Funct Mat Res Lab, Minist Educ,Sch Mat Sci & Engn, 4800 Caoan Rd, Shanghai 201804, Peoples R China

[2] Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 05期

基金：

中国博士后科学基金;

关键词：

Glass-ceramic; Energy storage density; Breakdown strength; Glass network; DIELECTRIC-PROPERTIES; TEMPERATURE; POLYMER;

D O I：

10.1016/j.ceramint.2016.12.042

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Phase evolution, dielectric properties, breakdown strength, and energy-storage performance were studied by varying K2O content in K2O-BaO-Nb2O5-SiO2 glass-ceramics. It was found that dielectric loss with the increase of 1(20 content increases owing to the nu-crystallized K2O into the glass network, while dielectric breakdown strength firstly increases and then decreases due to the competition between two physical mechanisms, i.e., interfacial polarization and bridging-oxygen bond broken by the non-bridging oxygen ions. With the increase of 1(20 content, energy-storage density firstly increased up to 12.06 +/- 0.69 J/cm(3) with a high breakdown strength of 1973 kV/cm, and then decreased. Also, the discharged efficiency is obtained as a high value of 92% from P-E hysteresis loops.

引用

页码：4183 / 4187

页数：5

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