Concurrently Improved Breakdown Strength and Storage Energy Capacitance in the Core–Shell-Structured Aromatic Polythiourea@BaTiO3 Polymer Nanocomposites Induced by the Nature of Interfacial Polarization and Crystallization

• DOI: 10.1021/acsaem.0c02396
• Publication Date: 2021-01-13T01:50:48Z
• Authors: Yingxin Chen; Minhui Xu; Xuanya Li; Jiahao Liu; Ning Zhu; Muhua Zhang; Weiming Ma; Zhen Shi; Jian Zhang; Xiaoxiao Lu; Xuefeng Zhang
• Keywords: Polymer nanocomposite; Ferroelectric Polymers

Interfacial architecture of the nanofillers is critical factor to achieve desirable dielectric properties in polymer nanocomposites. However, a basic understanding role interfacial polarization and crystallization on energy storage very seldom. Herein, we synthesized core–shell aromatic polythiourea@BaTiO3 nanoparticles (ArPTU@BT NPs) as prepare ferroelectric Remarkably, direct detections morphology, polarization, mechanism nanocomposites were revealed by combination atomic force microscopy (AFM) flash differential scanning calorimetry sites (Flash DSC), which experimentally detected AFM, can suppress local electric field migration charges, leading high breakdown strength (Eb). Second, addition ArPTU@BT NPs, served heterogeneous nucleators, promote rate (t0.5) form tiny spherulite, beneficial for reducing barrier dipole switching enhancing constant (ε) well an ultrahigh density (U). Our systematic studies provide possibilities behaviors design high-capacitance capacitor applications.