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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Edited by:

Zhongning Guo

Pages:

2071-2074

DOI:

10.4028/www.scientific.net/AMR.311-313.2071

Citation:

G. H. Chen and W. J. Zhang, "Effects of Heat Treatment Condition on Properties of Strontium Barium Niobate Based Glass-Ceramic for Energy Storage Capacitors", Advanced Materials Research, Vols. 311-313, pp. 2071-2074, 2011

Online since:

August 2011

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$35.00

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