Enhanced dielectric and energy-storage properties in ZnO-doped 0.9(0.94Na0.5Bi0.5TiO3−0.06BaTiO3)−0.1NaNbO3 ceramics. Issue 6 (15th April 2018)

• Record Type: Journal Article
• Authors: Yao, Yuan; Li, Yong; Sun, Ningning; Du, Jinhua; Li, Xiaowei; Zhang, Liwen; Zhang, Qiwei; Hao, Xihong
• Is Part Of: Ceramics international. Volume 44:Issue 6(2018)
• Page Start: 5961
• Page End: 5966
• Publication Date: 2018-04-15
• Subjects: Na0.5Bi0.5TiO3 -- Dielectric property -- Energy-storage performance -- Discharge property; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.12.174
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: [0.9(0.94Na0.5 Bi0.5 TiO3 −0.06BaTiO3 )−0.1NaNbO3 ]-xZnO (NBT-BT-NN-xZnO, x=0, 0.5 wt%, 1.0 wt%, 1.5 wt%, and 2.0 wt%) ferroelectric ceramics were fabricated using a conventional solid-state reaction method. The effects of ZnO content on dielectric, energy-storage and discharge properties were systematically investigated. Dielectric constant and difference between maximum and remanent polarization were significantly improved by ZnO doping. Dielectric constant of NBT-BT-NN-1.0-wt% ZnO was 3218 at 1 kHz and room temperature, i.e. one time bigger than that of pure NBT-BT-NN ceramic. As a consequence, a maximum energy-storage density of 1.27 J/cm 3 with a corresponding efficiency of 67% was obtained in NBT-BT-NN-1.0-wt% ZnO ceramic. Moreover, its pulsed discharge energy density was 1.17 J/cm 3, and 90% of which could be released in less than 300 ns. Therefore, ZnO doped NBT-BT-NN ceramic with a large energy-storage density and short release time could be a potential candidate for applications in high energy-storage capacitors.