Journal of Electroceramics

, 27:78 | Cite as

Preparation and properties of strontium barium niobate based glass-ceramics for energy storage capacitors

  • Guo-hua Chen
  • Wen-jun Zhang
  • Xin-yu Liu
  • Chang-rong Zhou
Article
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Abstract

Na2O–BaO–SrO–Nb2O5–B2O3–SiO2 glass-ceramics were prepared by melt-casting followed by controlled crystallization. X-ray diffraction results show that Ba0.27Sr0.75Nb2O5.78 with tungsten bronze structure formed as the dielectric phases from the glass matrix at 800°C. However, a secondary phase NaSr1.2Ba0.8Nb5O15 occurs when crystallization temperature exceeds 850°C. The glass-ceramics exhibit excellent stability in permittivity values from room temperature to 200°C and low dielectric losses below 0.05. Electrical testing demonstrates that the breakdown strength increases with crystallization temperature. The P–E characteristics at room temperature do not show any clear ferroelectric behavior. The glass-ceramic material heated at 800°C/3 h + 950°C/3 h shows a breakdown strength of 1400 kV/cm and its energy storage density can reach up to 4.0 J/cm3, which may be a strong candidate for high energy density storage capacitors for portable or pulsed power applications.

Keywords

Glass-ceramics Strontium barium niobate Electrical property Capacitor 
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Notes

Acknowledgments

This work was supported by the Research funds of The Guangxi Key Laboratory of Information Materials under the Contract No.0710908-01-Z. This work was also supported by Natural Science Foundation of China (NSFC no.51162002)

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Guo-hua Chen
    • 1
    • 2
  • Wen-jun Zhang
    • 1
  • Xin-yu Liu
    • 1
    • 2
  • Chang-rong Zhou
    • 1
    • 2
  1. 1.School of Materials Science and EngineeringGuilin University of Electronic TechnologyGuilinChina
  2. 2.Guangxi Key Laboratory of Information MaterialsGuilin University of Electronic TechnologyGuilinChina

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