Achieving high energy storage performance below 200 kV/cm in BaTiO3-based medium-entropy ceramics

High-Entropy Strategy for Improved Mechanical and Energy Storage Properties in BaTiO3–BiFeO3-Based Ceramics

“…This suggests that, in contrast to SMN or SZT, SMZTN will affect solid solutions with BF-BT differently. Goldschmidt tolerance factor ( t ), as demonstrated by earlier research, is a crucial value in the development of intricate perovskite structures . The fluctuation of configurational entropy and computed t for SMZTN -x ceramics is plotted in Figure b.…”

“…The performance of energy storage is improved, and relaxor qualities are introduced when a high entropy is introduced into ceramic solid solutions. ,− On the contrary, the coexistence of several components might quickly lead to the formation of an impurity phase. The SMZTN- x powders and ceramics were manufactured between 800 and 980 °C to confirm the B-site multielement potential coexistence.…”

“…Interestingly, at 190 kV/cm, a marked comprehensive performance with a high η value (75%) and a high W rec (2.4 J/cm 3 ) is obtained for SMZTN-0.08 lead-free ceramics. To further investigate the performance of SMZTN-modified BT-BF ceramics, lead-free bulk ceramics that have already been published (BT-BF-based, ,,− ,,,− BaTiO 3 -based, ,,,,, (K 0.5 Na 0.5 )­NbO 3 -based, ,− Bi 0.5 Na 0.5 TiO 3 -based ,− ) were compared in terms of their W rec and η below 200 kV/cm and under the critical electric field. The majority of lead-free ceramics, as illustrated in Figures f and S5, have low W rec , and it is challenging to obtain a combination of high η and low W rec .…”

Enhancement of Charge-Discharge Properties and Temperature Stability of (Ba0.975Na0.05)Ti0.99Nb0.01O3 Ceramic by Doping High-Entropy Oxide

“…The strengthened relaxation behavior is related to chemical disorder induced by the difference in valence state and ionic radius, which can enhances local random electric field and local stress, thereby disrupt long-range ordering and produce some polar nano region, then energy storage characteristics can be expected to be improved. 35 Figure 4a exhibits the hysteresis loop (P-E) of the (1-x)BNNT-xBZMASZ ceramics at 200 kV cm −1 under room temperature. With x increasing, the P-E curve becomes thinner toward a linear shape, suggesting a gradual disruption of the long-range ferroelectric ordering and a notable improvement in the relaxation properties.…”

Effect of A- or B-Site Sc Doping on Sintering Temperature, Crystal Structure, Microstructure, and Properties of BaZrxTi1−xO3 Ceramics

“…We calculated and fitted the full width at half maxima (FWHM) value of the XRD diffraction peak, as seen in Figure 2. The FWHM value (the data below the figure; the green line) gradually decreases with the increase in sintering temperature and has a minimum value of 1250 • C [16]. According to the Bragg diffraction equation, the value of the FWHM is directly related to the crystallinity, and a smaller FWHM means a stronger crystallinity [17,18].…”