Energy storage performance of Na0.5Bi0.5TiO3-SrTiO3 lead-free relaxors modified by AgNb0.85Ta0.15O3

Excellent thermal stability and energy storage properties of lead‐free Bi0.5Na0.5TiO3‐based ceramic

“…It was noticed that the two anomalies merged into one anomaly with the raised content of CT due to the decrease of R3c and stabilization of P4bm 44 . Similar phenomena were found in other BNT‐based ceramics 45,46 . Simultaneously, a significant broadening of permittivity peak was observed, which was attributed to structural distortion and the strong structural disorder with the introduction of CT.…”

Outstanding Energy Storage Performance of Na0.5Bi0.5TiO3-BaTiO3-(Sr0.85Bi0.1)(Mg1/3Nb2/3)O3 Lead-Free Ceramics

“…It is worth noting that the η value can continue to remain at 89% under 30 kV/mm. To show the excellent energy storage ability of current ceramics, Figure shows a comprehensive comparison of the energy storage parameters between our ceramic and other NBT-based energy storage ceramic materials reported over the past 3 years. ,,,− Clearly, the energy storage properties of the present ceramic are better than those of most of the other ceramics. Figure S4a–d shows that the ceramic also exhibits excellent frequency and temperature stabilities.…”

“…Although lead-based ferroelectric materials can meet these conditions, Pb is extremely unrecoverable and harmful to both humans and the environment. − Therefore, there is an urgent need to explore lead-free ceramic materials that can effectively meet these conditions. Na 0.5 Bi 0.5 TiO 3 (NBT)-based ceramics hold tremendous promise for energy storage applications because of their large P max . − However, their high P r and low breakdown field strength ( E B ) limit practical application of these materials. To solve these problems, Li et al successfully improved the W rec and η of NBT ceramics by engineering A-site vacancy defects by compositing a Sr 0.7 Bi 0.2 TiO 3 compound .…”

Enhanced recoverable energy storage density and efficiency in (1 − x)Ba0.85Ca0.15Zr0.1Ti0.9O3-xSrTiO3-MnO2 lead-free ceramics

“…5(a) and (b). Compared with the BT-, BNT-and KNN-based lead-free dielectric ceramics, 16,17,26,[37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] superior energy storage characteristics with a large W rec of 5.36 J cm À3 and a high Z of 82.2% are obtained in the 0.3BCZT-0.7ST ceramic. To further understand the improved energy storage performance of the 0.3BCZT-0.7ST ceramic, the P-E loops of the 0.3BCZT-0.7ST ceramic under various electric fields are measured.…”