TY - JOUR
T1 - Excellent energy storage properties in lead-free ferroelectric ceramics via heterogeneous structure design
AU - Chai, Qizhen
AU - Liu, Zhaobo
AU - Deng, Zhongqi
AU - Peng, Zhanhui
AU - Chao, Xiaolian
AU - Lu, Jiangbo
AU - Huang, Houbing
AU - Zhang, Shujun
AU - Yang, Zupei
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/12
Y1 - 2025/12
N2 - Dielectric capacitors with ultrahigh power density have emerged as promising candidates for essential energy storage components in electronic and electrical systems. They enable enhanced integration, miniaturization, and lightweight design. However, the development of dielectric materials for cutting-edge energy storage applications has been significantly limited by their low recoverable energy storage density (Wrec) and energy efficiency (η), especially at moderate electric fields. In this study, we fabricated 0.85K0.5Na0.5NbO3-0.15Sr0.7Nd0.2ZrO3 ceramics with an outstanding energy storage performance (Wrec ~ 7 J cm−3, η ~ 92% at 500 kV cm−1; Wrec ~ 14 J cm−3, η ~ 89% at 760 kV cm−1). The exceptional energy storage performance can be primarily attributed to the heterogeneous structure, where orthorhombic and tetragonal polar nanoregions are embedded in a cubic matrix. This work provides a good paradigm for designing dielectric materials with ultrahigh energy storage density and excellent energy efficiency at a moderate applied electric field, aligning with the stringent demands for advanced energy storage applications.
AB - Dielectric capacitors with ultrahigh power density have emerged as promising candidates for essential energy storage components in electronic and electrical systems. They enable enhanced integration, miniaturization, and lightweight design. However, the development of dielectric materials for cutting-edge energy storage applications has been significantly limited by their low recoverable energy storage density (Wrec) and energy efficiency (η), especially at moderate electric fields. In this study, we fabricated 0.85K0.5Na0.5NbO3-0.15Sr0.7Nd0.2ZrO3 ceramics with an outstanding energy storage performance (Wrec ~ 7 J cm−3, η ~ 92% at 500 kV cm−1; Wrec ~ 14 J cm−3, η ~ 89% at 760 kV cm−1). The exceptional energy storage performance can be primarily attributed to the heterogeneous structure, where orthorhombic and tetragonal polar nanoregions are embedded in a cubic matrix. This work provides a good paradigm for designing dielectric materials with ultrahigh energy storage density and excellent energy efficiency at a moderate applied electric field, aligning with the stringent demands for advanced energy storage applications.
UR - http://www.scopus.com/inward/record.url?scp=85218349999&partnerID=8YFLogxK
U2 - 10.1038/s41467-025-56767-0
DO - 10.1038/s41467-025-56767-0
M3 - Article
C2 - 39952923
AN - SCOPUS:85218349999
SN - 2041-1723
VL - 16
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1633
ER -
