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Updated: Jul 1, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Heterogeneous Polarization Configuration Regulated by Core-Multi-Shells Structure Enabled Superior Energy Storage in
Zixuan Wang1,2, Chaoqiong Zhu1,2, Lanqing Liang1,2
1School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu, China.
Abstract:
Environmental concerns have driven widespread research into energy storage for new energy development. Despite Bi0.5Na0.5TiO3-based ceramics offer high power density, fast charging/discharging, and good temperature stability, a major challenge of low energy density resulting from low breakdown strength and polarization hysteresis, limits their practical use despite other advantageous properties. In this work, a novel core-multi-shells structure, coupling the anti-ferroelectrics core, relaxor ferroelectrics inner shell, and linear dielectrics outer shell together, is constructed. This core-multi-shells structure induces multilevel lattice distortions, which facilitate quick polarization responses and effectively hinder the formation of long-range polar order, thus delays polarization saturation and weakens hysteresis. Beneficial from this heterogeneous polarization configuration, a remarkable discharge energy storage density of 11.05 J/cm3 at 790 kV/cm is achieved, together with good temperature stability and frequency stability, demonstrating the great application potential of this design.
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