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

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Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

1619-1622

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.1619

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Online since:

June 2012

Authors:

Guo Hua Chen, Tao Yong Liu, Yun Yang, Wen Jun Zhang

Keywords:

Capacitor, Electrical Properties, Glass-Ceramic, Strontium Barium Niobate

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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