Excellent energy storage performance of K0.5Bi0.5TiO3-based ferroelectric ceramics under low electric field

Excellent energy storage and discharge performances in Na1/2Bi1/2TiO3-based ergodic relaxors by enlarging the [AO12] cages

“…Different from the NBT-based ferroelectrics reported previously, 26 the hAi and d lnhAi/d ln E 0 profiles for sample KBZN14 don't show a steep skip corresponding to the domain switching but a over-diffusive platform maximized at a very low field of 0.40 kV mm À1 , which implies that the field-induced polarization mainly comes from the coupling of PNRs merging into metastable long-range order, as observed in other ergodic relaxors. 27,28 The fine scanning XRD pattern also verifies the weakly-polar feature of the KBZN14 sample, as shown in Fig. 4(e).…”

Enhancing Comprehensive Energy Storage Properties in Tungsten Bronze Sr0.53Ba0.47Nb2O6-Based Lead-free Ceramics by B-Site Doping and Relaxor Tuning

“…Benefiting from the microstructural evolution from electrical homogeneity to heterogeneity in the surrounding grains by the insulating grain boundary, a higher E B was obtained in the S3 sample, which contributed to a higher W r and η simultaneously. As depicted in Figure f, W r of the Sb-doped SBGNT ceramics lies in a medium level in comparison with those of other typical perovskite dielectric materials, while η is relatively outstanding, which is comparable to those of other lead-free materials. ,,,,− Therefore, SBN-based TTB ceramics are still attractive and possess great potential for high-performance capacitor applications.…”

“…To date, numerous studies have also confirmed that constructing RFE is an effective approach to achieve superior energy storage characteristics. Regrettably, the abovementioned materials confront huge challenges during processing due to the large amount of volatile elements such as Bi 3+ , Na + , or K + , which make the actual composition difficult to control in integrated circuits. , Therefore, the exploitation of novel eco-friendly RFE ceramics for achieving efficient energy density is still urgent despite the significant progress achieved over the past few years.…”

Achieving Ultrahigh Energy-Storage Density with Excellent Thermal Stability in Sr0.7Bi0.2TiO3-Based Relaxors via Polarization Behavior Modulation

“…By doping (Al 0.5 Nb 0.5 ) 4+ into Bi 0.5 Na 0.5 TiO 3 ferroelectric ceramic, the long-range ferroelectric order is disrupted and PNRs are generated, Yan et al achieved the W rec ∼ 6.64 J/cm 3 . The same method applies equally to BaTiO 3 -based, , Bi 0.5 K 0.5 TiO 3 -based, , K 0.5 Na 0.5 NbO 3 -based , and BiFeO 3 -based , ceramics. Qi and Zuo et al developed the concept of relaxor antiferroelectric (AFE) by disrupting the long-range ordered AFE domains in NaNbO 3 -based ceramic, which not only enhance the driving field for the AFE to FE phase transition, but also decrease the polarization hysteresis, thus obtaining superior energy-storage properties. − Sr 0.7 Bi 0.2 TiO 3 (SBT) ceramic shows diffused dielectric maxima during the low temperature range of −223 to −73 °C .…”