摘要
Dielectric materials with high energy storage density(Wrec)and efficiency(η)are expected for energy storage capacitors.In this work,<001>-textured Na0.7Bi0.1NbO_(3)(NBN)ceramics were prepared by a templated grain growth technique.The effects of microstructure and orientation degree on dielectric properties,polarization and energy storage performance were investigated.The textured ceramic with an optimized orientation degree(70%)showed a high Wrec of 2.4 J/cm^(3) andηof 85.6%.The excellent energy storage properties of textured ceramic originate from the co-effect of interfacial polarization and clamping effect.The results indicate that texture development is a potential candidate to optimize the energy storage properties of functional ceramics.
基金
financially supported by the National Natural Science Foundation of China(Grant Nos.52072080 and 11864004)
the Guangxi Natural Science Fund for Distinguished Young Scholars(Grant No.2022GXNSFFA035034).
