Enhanced energy storage and discharge-charge performance by changing glass phase content in potassium sodium niobate glass-ceramics

被引：18

作者：

Du, Xinyi ^{[1
]}

Pu, Yongping ^{[1
]}

Peng, Xin ^{[1
]}

Li, Run ^{[1
]}

Zhang, Qianwen ^{[1
]}

Chen, Min ^{[1
]}

Liu, Gang ^{[2
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China

[2] Southwest Univ, Fac Mat & Energy, Chongqing 400715, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Glass-ceramics; Glass network structure; Breakdown strength; BARIUM STRONTIUM-TITANATE; LOW ELECTRIC-FIELDS; DIELECTRIC-PROPERTIES; BREAKDOWN STRENGTH; DENSITY; CRYSTALLIZATION; DENSIFICATION; DYNAMICS;

D O I：

10.1016/j.ceramint.2020.01.175

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：

(1-x) (K2O-Na2O-2Nb(2)O(5))-x (2BaO-Nb2O5-2SiO(2)) glass-ceramics with x = 0.10, 0.15, 0.20, 0.25 have been successfully prepared by traditional melting method. XRD and microstructure analysis demonstrate that all glass-ceramics are crystallized into uniform Na0.9K0.1NbO3 and K-2(NbO)(2)(Si4O12) ferroelectric crystalline phase. Increasing x promotes the formation of Ba2NaNb5O15 phase with a tungsten bronze structure. Raman and complex impedance data confirmed that Ba 2 +/- is introduced to repair the disruption of the glass network and make carrier migration difficult when x = 0.15. Thus, the x = 0.15 glass-ceramic sample possesses a maximum calculated energy storage density of 2.32 J/cm(3) under 820 kV/cm because of a high degree of polymerization (DOP) glass network structure. Moreover, the pulsed discharge-charge tests are carried out to evaluate actual energy storage performance.

引用

页码：11492 / 11498

页数：7

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