Structure and dielectric properties of BaO-B_2O_3-ZnO- [(BaZr_(0.2)Ti_(0.80))0_3]_(0.80) - [(Ba_(0.70)Ca_(0.30))TiO_3]_(0.15) glass-ceramics for energy storage

摘要

Alkali-free [0.10 BaO + 0.4 B_2O_3 + 0.5 ZnO], [0.3 BaO + 0.6 B_2O_3 + 0.1 ZnO] glass powder materials were mixed with [(BaZr_(0.2)Ti_(0.80))O_3]_(0.85) -[(Ba_(0.70)Ca_(0.30))TiO_3]_(0.1)-BZT-BCT ceramic materials for energy density storage capacitor applications. Calcined (1,250 ℃/10 h) BZT-BCT ceramic powder materials were mixed with (15 wt. %) two different glass compositions of [0.10 BaO + 0.4 B_2O_3 + 0.5 ZnO], [0.3 BaO + 0.6 B_2O_3 + 0.1 ZnO] separately and were ground using low energy ball milling for 2 h at 400 rpm. The ball milled powders were made into discs having 13 mm diameter and 0.5 mm thickness using hydraulic press (2 ton) and sintered at 900 ℃ for 2 h. Both the compositions have shown dielectric breakdown field strength ～260, 280 kV/cm and energy density values ～1.118 and 0.50 J/cm~3.