Ultrahigh energy storage performance in gradient textured composites of plate-like Na0.5Bi4.5Ti4O15/PVDF through interface engineering. Issue 7 (1st April 2021)

• Record Type: Journal Article
• Authors: Wang, Zhuo; Kong, Menglei; Wang, Xiaoying; Li, Yinbo; Yi, Zhihui; Sun, Zixiong
• Is Part Of: Ceramics international. Volume 47:Issue 7(2021)Part A
• Page Start: 8787
• Page End: 8794
• Publication Date: 2021-04-01
• Subjects: Micro-capacitance -- Large energy density -- Electric tree -- Gradient textured composites; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.11.244
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The gradient textured plate-like Na0.5 Bi4.5 Ti4 O15 (P-NBT4)/PVDF composites have been realized through tape casting process of layer by layer, which loadings are gradually decreased from bottom layer to top layer. The micro-capacitance formed by P-NBT4 particles and interfacial polarization between layers enables the composites to obtain a high permittivity. In addition, the different electric field of gradient composites will weaken the growth of electric tree between layers, as well as the P-NBT4 ceramic particles in composite films can extend the breakdown path, so that the composites will undergo premature breakdown. By comparing, the large energy storage density (16.41 J/cm 3 ) at the relative low electric field of 350 kV/mm is obtained in the gradient textured composites.