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

Based on (1 - x)(0.92Bi(0.5)Na(0.5)TiO(3)-0.08BaTiO(3))-xNa(0.73)Bi(0.09)NbO(3) ((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 similar to 1.6 mu m grain size and obviously broadened epsilon(r) 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/cm(3) and eta = 73.9 % were achieved, together with a wide temperature range of -12 to 300 A degrees C with a TCCa pound A pound a parts per thousand currency signA 15 %, showing potential for high temperature energy-storage applications.