Significantly enhanced energy-storage density in the strontium barium niobate-based/titanate-based glass-ceramics

2016 ◽  
Vol 100 (2) ◽  
pp. 506-510 ◽  
Author(s):  
Jinhua Liu ◽  
Haitao Wang ◽  
Bo Shen ◽  
Jiwei Zhai ◽  
Peng Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Glass Ceramics ◽  
Energy Storage Density ◽  
Strontium Barium Niobate ◽  
Strontium Barium ◽  
Storage Density

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.

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.

Ultrahigh energy storage density and instantaneous discharge power density in BaO–PbO–Na2O–Nb2O5–SiO2–Al2O3 glass-ceramics

2018 ◽  
Vol 6 (46) ◽  
pp. 12608-12614 ◽  
Author(s):  
Shujian Wang ◽  
Jia Tian ◽  
Jingran Liu ◽  
Ke Yang ◽  
Bo Shen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Glass Ceramics ◽  
Discharge Power ◽  
Energy Storage Density ◽  
Ultrahigh Energy ◽  
Storage Density ◽  
Instantaneous Power ◽  
Instantaneous Discharge

An ultrahigh energy storage density Es of 20.7 J cm−3 and a maximum instantaneous power density of 78.2 MW cm−3 were obtained in BPNN-AS glass-ceramics.

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.

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