Enhanced energy storage property achieved in Na0.5Bi0.5TiO3-based ferroelectric ceramics via composition design and grain size tuning

Ultrahigh energy storage density, high efficiency and superior thermal stability in Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramicsviaconstructing multiphase structures

“…6(k, l) and Table S3 † depict the comparison of W rec , h and the corresponding E between x = 0.10-0.25 and other reports on BNT-based ceramics. 7,9,13,23,26,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] It can be seen that a simultaneous achievement of high W rec and h is relatively difficult because of the competition between various parameters. For example, the polarization of dielectrics shows a positive relationship between 3 r .…”

Leakage-Limitation Engineering Derived from an Interfacial Charge Barrier for Dielectric Energy Storage in Relaxation Ferroelectric Films

“…Some effective methods are considered to reduce leakage and enhance energy storage performances, including modifying the lattice structure, electric domain structure, and conductivity type by chemical doping and solid solution. − Although the modification may reduce leakage, it is sometimes accompanied with a decrease in polarization strength, which is not beneficial to improving the energy storage density. Therefore, limiting leakage without expanse of polarization is a challenging and meaningful topic.…”

Ba2+/Sr2+ regulation in A‐site vacancy‐engineered B0.015+1.5xS0.245‐1.5x□0.03BNT relaxor ceramics for energy storage

“…5,[10][11][12][13] However, applying a high electric field requires the ceramics to be able to withstand higher electrical breakdown strength E b , which puts higher demands on the ceramic system itself and its preparation process, since E b is affected by many factors, such as crystal band gap, grain size and distribution, ceramic density, dielectric thickness, electrode shape, etc. 10,11,[14][15][16] Moreover, high applying electric field will also threaten the supporting insulation and power system, which may limit the further application of wearable electronic or highly integrated portable devices. Therefore, developing ceramic materials with high energy storage properties under relatively low electric fields has important practical value and significance.…”

“…[27][28][29][30] By introducing the second component to construct a solid solution with BNT, not only the sintering performance of BNT can be improved, but also the polarization behavior of BNT can be regulated to enable it to realize the transformation from a typical normal ferroelectric to a relaxor one, thus improving the energy storage characteristics, such as BNT-SrTiO 3 , BNT-(Sr,Ba)TiO 3 , BNT-AgNbO 3 , BNT-NaNbO 3 , and BNT-(K,Na)NbO 3 systems. 10,15,27,[31][32][33][34][35]…”

“…Apparently, achieving high energy storage density in ceramic capacitors highly depends on applying a high electric field 5,10–13 . However, applying a high electric field requires the ceramics to be able to withstand higher electrical breakdown strength E b , which puts higher demands on the ceramic system itself and its preparation process, since E b is affected by many factors, such as crystal band gap, grain size and distribution, ceramic density, dielectric thickness, electrode shape, etc 10,11,14–16 . Moreover, high applying electric field will also threaten the supporting insulation and power system, which may limit the further application of wearable electronic or highly integrated portable devices.…”