Improved dielectric breakdown strength and energy storage properties in Er2O3 modified Sr0.35Bi0.35K0.25TiO3

NaNbO3‐(Bi0.5Li0.5)TiO3 Lead‐Free Relaxor Ferroelectric Capacitors with Superior Energy‐Storage Performances via Multiple Synergistic Design

“…All of these might require an in-depth 32BLT ceramics and other recently reported bulk ceramics. [2][3][4][5][31][32][33][56][57][58][59][60][61][62] The red star and the purple star represent the energy-storage properties of 0.68NN-0.32BLT and 0.68NN-0.32BT ceramics, respectively. The P-E loops for c) pure NN and d) 0.68NN-0.32BT/BLT ceramics measured under their E test-max at 10 Hz; e) a comparison of E test-max , P max , W rec , and η values between pure NN and 0.68NN-0.32BT/BLT ceramics.…”

“…Figure 1. a,b) The comparison of energy-storage properties between 0.68NN-0.32BLT ceramics and other recently reported bulk ceramics [2][3][4][5][31][32][33][56][57][58][59][60][61][62]. The red star and the purple star represent the energy-storage properties of 0.68NN-0.32BLT and 0.68NN-0.32BT ceramics, respectively.…”

Outstanding Energy Storage Performance in High‐Hardness (Bi0.5K0.5)TiO3‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design

“…However, poor energy storage performances (W rec < 3 J cm −3 and η < 80%) have been obtained in BKT-based ceramics, which should be mainly attributed to the insufficient E b (<25 kV mm −1 ) of the poor-quality samples although hot press sintering and rolling technique have been used. [20][21][22][23][24][25][26] Thus it is difficult for BKT-based materials to compete with classic systems such as BaTiO 3 (BT), [27][28][29][30][31] BNT, [7,[32][33][34] NN, [8,35,36] AN, [5,6,37] and BiFeO 3 (BF) [16,38] in the field of energy storage because of the features of difficult preparation, low density, and volatile elements. Except the local structure design, the improvement of sample quality should be the most important way to enhance the energy storage properties of BKT-based ceramics, which could be directly reflected on the mechanical properties.…”

Domain Engineered Lead-Free Ceramics with Large Energy Storage Density and Ultra-High Efficiency under Low Electric Fields

“…Afterward, the capacitor discharges through an applied resistance. − The electric energy would be stored and released through the above physical process. Generally speaking, there are three fundamental parameters used to represent the energy storage performance, that is, the total energy storage density ( W t ), the discharging energy storage density ( W d ), and efficiency (η), which are denoted on the basis of the following formulas, , where P max is the maximum polarization value, P r is the remnant polarization value, and E is the applied electric field strength, respectively. Consequently, high P m , low P r , and enhanced breakdown strength ( E B ) are conducive to achieving a large W d value.…”