Effect of Bi(Zn1/2Nb2/5)O3 addition on phase transition and energy storage properties of BaTiO3 ceramics

Ma; Cuiying; Zhang; Ruiying; Zhang; Guangwei; Du; Huiling; Liu; Jia; Liang; Ruinan; Wang; Zhaoguo

doi:10.1016/j.cap.2023.08.012

Article

Curr. Appl. Phys. 2023; 55: 1-8

Published online November 30, 2023 https://doi.org/10.1016/j.cap.2023.08.012

Effect of Bi(Zn1/2Nb2/5)O3 addition on phase transition and energy storage properties of BaTiO3 ceramics

Ma, Cuiying; Zhang, Ruiying; Zhang, Guangwei; Du, Huiling; Liu, Jia; Liang, Ruinan; Wang, Zhaoguo

College of Materials Science and Engineering, Xi'an University of Science and Technology, Shaanxi, Xi'an, 710054, China; Xi'an Huashan Tungsten Products Co., Ltd., Shaanxi, Xi'an, 710043, China

Correspondence to:C. Ma; College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, Shaanxi, 710054, China; email: mcy@xust.edu.cn; H. Du; College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, Shaanxi, 710054, China; email: hldu@xust.edu.cn

Abstract

Go to
Abstract

Bi(Zn1/2Nb2/5)O3-modified BaTiO3 ceramics were designed with formula (1‒x)BaTiO3‒xBi(Zn1/2Nb2/5)O3 (0 ≤ x ≤ 0.15) and fabricated using conventional solid-state route. With increasing Bi(Zn1/2Nb2/5)O3 concentration, grain volume increased and phase structure was transformed from tetragonal to pseudo-cubic. Dielectric properties changed from temperature-dependent to temperature-insensitive and curves were flattened. Additionally, higher pseudo-cubic phase content induced slim P-E loop and low Pr. Therefore, 0.94BaTiO3‒0.06Bi(Zn1/2Nb2/5)O3 ceramic achieved energy storage density of 1.85 J/cm3 and high energy efficiency of 91.2% under electric field of 230 kV/cm. This energy storage density was 5 times higher than that of pure BT ceramic. Meanwhile, energy storage properties of this ceramic exhibited excellent thermal stability in the range of 30–120 °C and good frequency stability over 10–100 Hz. This work provides promising alternative option in energy storage materials. © 2023 Korean Physical Society

Keywords: BaTiO₃-based ceramic, Dielectric property, Energy storage property, Phase structure