Ergodic Relaxor State with High Energy Storage Performance Induced by Doping Sr0.85Bi0.1TiO3 in Bi0.5Na0.5TiO3 Ceramics

Enhanced Dielectric Energy Storage Performance of 0.45Na0.5Bi0.5TiO3-0.55Sr0.7Bi0.2TiO3/AlN 0–3 Type Lead-Free Composite Ceramics

“…Na 0.5 Bi 0.5 TiO 3 –Sr 0.7 Bi 0.2 TiO 3 (NBT-SBT) binary systems achieve relaxor behavior, which is expected to decrease the hysteresis of polarization . It was reported that SBT modulation into NBT can simultaneously reduce P r , sustain large P m , and improve E b . − In addition, the 0–3 type composite is an effective structural design to enhance E b . The 0–3 type composite is to add a second phase with high E b to the matrix, thus endure higher electric field according to the partial pressure rule, achieving the purpose of increasing the E b .…”

Enhanced energy storage properties of Sr(Ti 0. 5 Zr 0 .5 ) O 3 modified (Na 0. 5 Bi 0 .5 ) Zhang1, Dai2, Pan3 et al. 2022Intl J of Energy Research13020View full textAdd to dashboardCite

“…The STZ additive remarkably influenced the P‐E loops shape, BDS , and polarization value of the BNT ceramics. Figure 6I displays a comparison of W rec and η for 0.80BNT‐0.20STZ ceramics and other lead‐free bulk ceramics 41‐54 . It is worth noting that the W rec and η of 0.80BNT‐0.20STZ ceramic are superior to those of most BNT‐based bulk ceramics, which have great application potential in pulse power equipment.…”

“…Figure 6I displays a comparison of W rec and η for 0.80BNT-0.20STZ ceramics and other lead-free bulk ceramics. [41][42][43][44][45][46][47][48][49][50][51][52][53][54] It is worth noting that the W rec and η of 0.80BNT-0.20STZ ceramic are superior to those of most BNT-based bulk ceramics, which have great application potential in pulse power equipment.…”

Effects of processing parameter on energy storage density and ferroelectric properties of lead-free bismuth sodium titanate-strontium bismuth titanate ceramics

“…Ceramic-based dielectric capacitors have drawn growing interest due to their small volume, excellent thermal properties, good mechanical properties, fast charge-discharge speed, and high-power density [4]. Besides, large maximum polarization (P max ) and low remnant polarization (P r ) in the relaxor ferroelectrics are key features for W and η in the selection of materials [5].…”

“…In particular, the dielectric breakdown strength (E DBS ) was improved from 120 kV/cm (of the pure BNT ceramic) to around 160 kV/cm (of the 0.6BNT-0.4SBT ceramic), which displayed a large W rec of 2.20 J/cm 3 , implying a large potential ability of the 0.6BNT-0.4SBT ceramic in energy storage [4]. Li et al [5] also found a significant increase of W (1.5 J/cm 3 ) and η (73%) for the BNT-SBT ergodic relaxor (ER) ceramics. The significant increase of W was due to the ceramics' low P r and large P max , which were induced by adding SBT into the (1-x)Bi 0.5 Na 0.5 TiO 3 -xSr 0.85 Bi 0.1 TiO 3 ceramic.…”