scholarly journals Ultrahigh Energy Storage Properties in (Sr0.7Bi0.2)TiO3-Bi(Mg0.5Zr0.5)O3 Lead-Free Ceramics and Potential for High-Temperature Capacitors

Materials ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 180 ◽  
Author(s):  
Xi Kong ◽  
Letao Yang ◽  
Zhenxiang Cheng ◽  
Shujun Zhang
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
High Efficiency ◽  
Elevated Temperatures ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Potential Candidate ◽  
Ultrahigh Energy ◽  
Energy Storage Properties ◽  
Storage Properties

Due to the enhanced demand for numerous electrical energy storage applications, including applications at elevated temperatures, dielectric capacitors with optimized energy storage properties have attracted extensive attention. In this study, a series of lead-free strontium bismuth titanate based relaxor ferroelectric ceramics have been successfully synthesized by high temperature solid-state reaction. The ultrahigh recoverable energy storage density of 4.2 J/cm3 under 380 kV/cm, with the high efficiency of 88%, was obtained in the sample with x = 0.06. Of particular importance is that this ceramic composition exhibits excellent energy storage performance over a wide work temperature up to 150 °C, with strong fatigue endurance and fast discharge speed. All these merits demonstrate the studied ceramic system is a potential candidate for high-temperature capacitors as energy storage devices.

Influence of Nb2O5 doping to energy-storage properties of (Na0.5Bi0.5)0.705Ba0.045Sr0.25TiO3 lead-free ferroelectric ceramics

2021 ◽  
Vol 573 (1) ◽  
pp. 246-255
Author(s):  
Ruifang Wu ◽  
Linlin Liang ◽  
Ruijie Duan ◽  
Jinghao Zhao ◽  
Zekai Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Energy Storage Properties ◽  
Storage Properties

Sr2+ doping to enhanced energy-storage properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 lead-free ferroelectric ceramics

2018 ◽  
Vol 29 (16) ◽  
pp. 13952-13956
Author(s):  
Ruijie Duan ◽  
Jing Wang ◽  
Shenglin Jiang ◽  
Yunkai Lv ◽  
Jiali Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Energy Storage Properties ◽  
Storage Properties

scholarly journals Enhanced energy storage performance and fatigue resistance of Mn-doped 0.7Na0.5Bi0.5TiO3–0.3Sr0.7Bi0.2TiO3 lead-free ferroelectric ceramics

2020 ◽  
pp. 1-10
Author(s):  
Jinbo Wang ◽  
Huiqing Fan
Keyword(s):  
Energy Storage ◽  
Fatigue Resistance ◽  
Dielectric Response ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Relaxor Behavior ◽  
Storage Performance ◽  
Energy Storage Properties ◽  
Mn Doped ◽  
Storage Properties

The validity of Mn element on enhanced energy storage performance and fatigue resistance of Mn-doped 0.7Na0.5Bi0.5TiO3–0.3Sr0.7Bi0.2TiO3 lead-free ferroelectric ceramics (BNT–BST–xMn) is certified by doping. The effects of Mn modification on the dielectric behavior, ferroelectric, energy storage properties, and AC impedance are comprehensively investigated. It is found that the average grain size of the ceramics modified by Mn additions is reduced slightly. Moreover, the relaxor properties are evidently enhanced with the increased Mn content. The AC impedance spectra can even better clarify the dielectric response and relaxor behavior. The results suggest that both of the dielectric response and relaxor behavior are determined by defects especially concentration of the oxygen vacancy. The superior energy storage properties are realized at x = 0.05 with an energy storage density (Wrec) of 1.33 J/cm3 as well as energy storage efficiency (η) of 86.2% at 100 kV/cm, accompanied with a superior thermal stability. BNT–BST–5Mn ceramics can maintain a stable energy storage performance within 106 fatigue cycles, indicating an excellent fatigue resistance.

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