Enhanced energy storage performance in Sn doped Sr0.6(Na0.5Bi0.5)0.4TiO3 lead-free relaxor ferroelectric ceramics. Issue 10 (August 2019)

• Record Type: Journal Article
• Authors: Zhang, Leiyang; Wang, Ziyang; Li, Yang; Chen, Peng; Cai, Jing; Yan, Yan; Zhou, Yifan; Wang, Dawei; Liu, Gang
• Is Part Of: Journal of the European Ceramic Society. Volume 39:Issue 10(2019)
• Page Start: 3057
• Page End: 3063
• Publication Date: 2019-08
• Subjects: Lead-free -- NBT-ST -- SnO2 -- Energy storage -- Dielectric; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2019.02.004
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: SnO2 doped Sr0.6 (Na0.5 Bi0.5 )0.4 TiO3 (NBT-ST) ceramics were prepared by a conventional solid-state reaction method. Their phase structures, microstructures and electrical properties were characterized in details. It is found that SnO2 doping could increase the lattice parameters, density and average grain size. A suitable amount of SnO2 can improve dielectric properties, and affect the relaxor behavior of the NBT-ST matrix, thereby it can effectively reduce the energy loss and optimize the energy storage performance. Furthermore, the energy storage properties are improved with SnO2 doping. Especially, the 1 at. % SnO2 doped NBT-ST achieves a high recoverable energy density of 2.35 J/cm 3, which is mainly attributed to large maximum polarization of 43.2 μC/cm 2, small remnant polarization of 5.83 μC/cm 2 and high breakdown strength of 180 kV/cm. Also, relatively good temperature stability for dielectric performance and excellent fatigue resistance are observed in this composition. These properties are attractive for lead-free energy storage applications.