High breakdown strength and enhanced energy storage performance of niobate-based glass-ceramics via glass phase structure optimization

2021 ◽  
Author(s):  
Changshuai Liu ◽  
Shufeng Xie ◽  
Kaikai Chen ◽  
Baijie Song ◽  
Bo Shen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Phase Structure ◽  
Glass Phase ◽  
Breakdown Strength ◽  
Glass Ceramics ◽  
Structure Optimization ◽  
Storage Performance

Effect of Gd2O3/BaF2 Addition on Dielectric Behavior and Energy Storage Properties of Strontium Barium Niobate Glass-Ceramics

2014 ◽  
Vol 633 ◽  
pp. 422-426
Author(s):  
Jun Song ◽  
Guo Hua Chen ◽  
Yu Tang
Keyword(s):  
Energy Storage ◽  
Breakdown Strength ◽  
Glass Ceramics ◽  
Phase Evolution ◽  
High Energy ◽  
Dielectric Behavior ◽  
Energy Storage Density ◽  
Storage Density ◽  
Energy Storage Properties ◽  
Storage Properties

SrO–BaO–Nb2O5–B2O3system glass-ceramics with Gd2O3/BaF2addition have been prepared by controlled crystallization method. The effect of Gd2O3/BaF2addition on the phase evolution, dielectric properties and energy storage properties has been investigated. The addition of Gd2O3/BaF2to the glass-ceramics changes the dielectric property and energy storage density. The glass-ceramics with 0.5 mol% Gd2O3and 4.5mol% BaF2heat treated at 850°C/3h possesses a dielectric constant of 125, a breakdown strength of 1055 kV/mm and energy storage density of 6.16J/cm3, which are promising materials for high energy storage density dielectrics.

Effects of BaF2 Addition on Properties of Strontium Barium Niobate Based Glass-Ceramics for Energy Storage Capacitors

2012 ◽  
Vol 535-537 ◽  
pp. 1619-1622
Author(s):  
Guo Hua Chen ◽  
Tao Yong Liu ◽  
Yun Yang ◽  
Wen Jun Zhang
Keyword(s):  
Energy Storage ◽  
Breakdown Strength ◽  
Glass Ceramics ◽  
Dielectric Materials ◽  
High Energy ◽  
Energy Storage Density ◽  
Secondary Phases ◽  
Strontium Barium Niobate ◽  
Strontium Barium ◽  
Storage Density

The influences of BaF2 addition on phase composition, electrical property and energy storage density in strontium barium niobate based glass-ceramics prepared using melt-casting followed by controlled crystallization were investigated. The results indicate that adding 1wt% BaF2 improves the precipitation of Ba0.27Sr0.75Nb2O6 phase. However, the secondary phases, Ba3SrNb2O9 and BaBF5 are formed as the amount of BaF2 exceeds 3wt% when heated at 800°C/3h+900°C/3h in the glass-ceramics. The dielectric constant, microstructure, volume resistivity and breakdown strength are related to BaF2 content. The maximum breakdown strength (1450 kV/cm) and the energy storage density (5.1J/cm3) can be obtained in the glass-ceramic sample with 1wt% BaF2 addition, which would be suitable to be used as the dielectric materials for high energy storage capacitors.

Effects of Heat Treatment Condition on Properties of Strontium Barium Niobate Based Glass-Ceramic for Energy Storage Capacitors

2011 ◽  
Vol 311-313 ◽  
pp. 2071-2074 ◽  
Author(s):  
Guo Hua Chen ◽  
Wen Jun Zhang
Keyword(s):  
Energy Storage ◽  
Glass Ceramic ◽  
Crystallization Temperature ◽  
Breakdown Strength ◽  
Glass Ceramics ◽  
High Energy ◽  
High Energy Density ◽  
Strontium Barium Niobate ◽  
Strontium Barium ◽  
Controlled Crystallization

Strontium barium niobate-based glass-ceramics are prepared by melt-casting followed by controlled crystallization. Results show that Ba0.25Sr0.75Nb2O6 with tungsten bronze structure forms as the dielectric phases from the glass matrix at 800°C. However, a secondary phase NaSr1.2Ba0.8Nb5O15 occurrs when crystallization temperature exceeds 850°C. The glass-ceramics formed through controlled crystallization exhibit the excellent stability of the temperature and frequency dependence of dielectric properties. The breakdown strength increases with the crystallization temperature. The glass-ceramic material heated at 800°C/3h+950°C/3h shows a breakdown strength of 1400 kV/cm and its energy storage density can reach up to 4.0 J/cm3, which may be strong candidate for high energy density storage capacitors for portable or pulsed power applications.

Phase structure and energy storage performance for BiFeO3–BaTiO3 based lead-free ferroelectric ceramics

2019 ◽  
Vol 45 (16) ◽  
pp. 20266-20275 ◽  
Author(s):  
Li-Feng Zhu ◽  
Xuan-Wei Lei ◽  
Lei Zhao ◽  
M. Irfan Hussain ◽  
Guang-Zhi Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Phase Structure ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Storage Performance

scholarly journals Improved Energy Storage Performance of Linear Dielectric Polymer Nanodielectrics with Polydopamine coated BN Nanosheets

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1349 ◽  
Author(s):  
Jian Wang ◽  
Yunchuan Xie ◽  
Jingjing Liu ◽  
Zhicheng Zhang ◽  
Qiang Zhuang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Surface Coating ◽  
Breakdown Strength ◽  
High Energy ◽  
Low Energy ◽  
High Energy Density ◽  
Storage Performance ◽  
2D Structure ◽  
Dielectric Polymer

Polymer-based nanodielectrics have been intensively investigated for their potential application as energy storage capacitors. However, their relatively low energy density (Ue) and discharging efficiency (η) may greatly limit their practical usage. In present work, high insulating two-dimensional boron nitride nanosheets (BNNS), were introduced into a linear dielectric polymer (P(VDF-TrFE-CTFE)-g-PMMA) matrix to enhance the energy storage performance of the composite. Thanks to the surface coating of polydopamine (PDA) on BN nanosheets, the composite filled with 6 wt% coated BNNS (mBNNS) exhibits significantly improved breakdown strength (Eb) of 540 MV/m and an energy density (Ue) of 11 J/cm3, which are increased by 23% and 100%, respectively as compared with the composite filled with the same content of pristine BNNS. Meanwhile, η of both composites is well retained at around 70% even under a high voltage of 400 MV/m, which is superior to most of the reported composites. This work suggests that complexing polymer matrix with linear dielectric properties with surface coated BNNS fillers with high insulating 2D structure might be a facile strategy to achieve composite dielectrics with simultaneously high energy density and high discharging efficiency.

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