Superior Energy‐Storage Capacitors with Simultaneously Giant Energy Density and Efficiency Using Nanodomain Engineered BiFeO3‐BaTiO3‐NaNbO3 Lead‐Free Bulk Ferroelectrics

• Published in: Advanced energy materials Vol. 10; no. 6
• Main Authors: Qi, He, Xie, Aiwen, Tian, Ao, Zuo, Ruzhong
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.02.2020
• Subjects: Antiferroelectricity; Barium titanates; BiFeO3; Bismuth ferrite; Capacitors; Charge density; Dielectric breakdown; Dielectric strength; Discharge; Efficiency; Energy gap; Energy storage; energy‐storage capacitors; Ferroelectric materials; Ferroelectrics; Flux density; Grain size; lead‐free relaxor ferroelectrics; Microscopy; nanodomains; Polarization; Power efficiency; Relaxors; Sodium compounds; Solid solutions; Thermal stability

Dielectric capacitors are receiving a great deal of attention for advanced pulsed power owing to their high power density and quick charge/discharge rate. However, the energy density is limited and the efficiency and the thermal stability are also not ideal, which has been a longstanding obstacle to...