A new energy-storage ceramic system based on Bi0.5Na0.5TiO3 ternary solid solution

• DOI: 10.1007/s10854-015-3757-x
• Publication Date: 2015-09-12T08:50:29Z
• Authors: Qi Xu; Hanxing Liu; Zhe Song; Xuechen Huang; Atta Ullah; Lin Zhang; Juan Xie; Hua Hao; Minghe Cao; Zhonghua Yao
• Keywords: Ternary numeral system; Atmospheric temperature range

Based on (1 − x)(0.92Bi0.5Na0.5TiO3–0.08BaTiO3)–xNa0.73Bi0.09NbO3 ((1 − x)BNTBT–xNBN) lead-free ternary solid solution, a new energy-storage ceramic system was prepared and firstly reported in this study. The solid solubility of no more than 10 mol% for NBN was revealed by XRD characterization. Growing grains up to ~1.6 μm grain size and obviously broadened er versus T response were observed with increasing NBN from 10 to 40 mol%, indicating the greatly improved dielectric temperature stability. For sample with x = 0.20, optimized energy-storage properties with W = 1.36 J/cm3 and η = 73.9 % were achieved, together with a wide temperature range of −12 to 300 °C with ∣TCC∣ ≤ 15 %, showing potential for high temperature energy-storage applications.