Energy storage and ferroelectric properties of flexible 1-x (Na0.5Bi0.5TiO3)-xBaTiO3 thin films on Pt/mica substrates

被引：11
作者：
Lee, Eunmi [1 ]
Son, Jong Yeog [2 ,3 ]
机构：
[1] Hongik Univ, Dept Elect & Elect Engn, Seoul 04066, South Korea
[2] Kyung Hee Univ, Coll Appl Sci, Dept Appl Phys, Suwon 446701, South Korea
[3] Kyung Hee Univ, Inst Nat Sci, Coll Appl Sci, Suwon 446701, South Korea
来源：
JOURNAL OF ENERGY STORAGE | 2024年 / 77卷
关键词：
Flexible 1-x(Na0.5Bi0.5TiO3)-xBaTiO3 (NBT) thin films; Ferroelectric properties; Energy storage characteristics; Relaxor ferroelectric properties; DENSITY; CERAMICS; BEHAVIOR;
D O I：
10.1016/j.est.2023.109945
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
We investigated the energy storage and ferroelectric properties of flexible 1-x(Na0.5Bi0.5TiO3)-xBaTiO3 (NBT) thin films with BaTiO3 (BT) concentrations ranging from 0 to 6 mol% on Pt/mica substrates depending on the BT concentration. The NBT thin films exhibiting preferentially a-oriented crystallinity on the (111) Pt/mica substrates showed improved leakage current characteristics by increasing the BT concentration. In particular, the NBT thin films with zero BT concentration showed a high remanent polarization of about 28.4 mu C/cm2. On the other hand, the NBT thin films with a BT concentration of 6 mol% significantly reduced the remanent polarization to about 4.7 mu C/cm2 due to the characteristics of the relaxor. As a result, the NBT thin films with a BT concentration of 6 mol% showed a high energy storage efficiency of 89.5 % with a high recoverable energy storage density of 54.3 J/cm3 and a low loss energy density of 6.3 J/cm3.
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页数：8
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