Dielectric properties and energy storage performance of CCTO/ polycarbonate composites: influence of CCTO synthesis route

摘要: This work explores the effect of CaCu3Ti4O12 (CCTO) synthetic route on CCTO/polycarbonate (PC) composite microstructure, low-field dielectric properties (eeff and tan δ), high-field polarization behavior. CCTO was synthesized via traditional solid-state a wet chemical sol–gel route. PXRD, FE-SEM BET analysis results show that particles are 20 times smaller have more surface area per gram than particles. Solution-blended vol% CCTO/PC composites up to 12 higher eeff values PC. Surprisingly, permittivity enhancement due is not much found using larger Sol–gel loss specific conductivity composites, probably presence polyethylene glycol added as dispersant in synthesis. The introduces ferroelectric behavior including significant remanent polarization, hysteresis, energy dissipation. stored recovered densities five PC at same applied electric field, but percentage reaches 70 %. also greatly reduced breakdown field strength compared PC, so composites’ maximum density less Thus promising for applications requiring high low strengths, dielectrics density, pulse power storage.