A new family of sodium niobate-based dielectrics for electrical energy storage applications

By Zetian Yang, Hongliang Du, Li Jin, Q. Hu, S. Qu, Zhaoning Yang, Ying Yu, Xiaoyong Wei, Zhuo Xu. Journal of the European Ceramic Society, 2019

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Abstract Although tremendous achievements have been made in enhancing recoverable energy storage density (Wrec) of lead-free dielectric ceramics for electrical energy storage applications in recent years, these ceramics with high Wrec still have two disadvantages: complex chemical composition and difficult preparation process. In this work, we selected NaNbO3 (NN)-based ceramics as base materials and used Bi2O3 as a sintering aid to reduce porosity and enhance dielectric breakdown strengths. Encouragingly, high Wrec, simple chemical composition and facile preparation process were simultaneously realized in 0.77NaNbO3-0.23BaTiO3 (0.77NN-0.23BT) ceramics. A large Wrec of 1.5 J cm−3 at 175 kV cm−1 and excellent thermal stability (variation of Wrec

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7aebe888b52934995350bc57f405b263083fb237