@article{Dong2026, 
author = {Qinpeng Dong and Yu Zhang and Yue Pan and Jiangping Huang and Xiuli Chen and Xu Li and Huanfu Zhou},
title = {Defect-engineered core-shell structured NaNbO3-based energy storage ceramics},
year = {2026},
journal = {Journal of Materiomics},
volume = {12},
number = {1},
keywords = {NaNbO3 ceramic, Vacancy defect, Core–shell, Relaxor behavior, Energy storage},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2025.101097},
doi = {10.1016/j.jmat.2025.101097},
abstract = {As research on lead−free energy storage materials advances, high−performance substrates and their modification methods have been continuously explored. In NaNbO3–based energy storage ceramics, low polarization limits the enhancement of energy storage performance. This study utilized defect engineering design to prepare (1–x)NaNbO3-xSr(Fe1/3Sb2/3)O3 ceramics with core–shell structure through a Fe/Sb dual oxidation state variable element synergistic regulation strategy. The goal is to enhance ΔP and optimize Eb of ceramics by adjusting the content of vacancy defects and phase structure, so that ceramics can achieving high energy storage characteristics. A Wrec of 6.4 J/cm3 and η of 80% at 645 kV/cm were achieved in NaNbO3–based ceramic. Additionally, based on this study, we performed a detailed analysis of the origin of high ΔP and the influence of defect structures on Eb, with the aim of providing a new reference for development and research of high–performance lead–free energy storage ceramics.}
}