Phase transitions in bismuth-modified silver niobate ceramics for high power energy storage

Abstract

Ceramics of composition Ag1−3xBixNbO3 (0.005 ≤ x ≤ 0.040) were prepared by solid state methods and their structure and electrical behavior were characterized with a view to their potential use as high power energy storage materials.

Antiferroelectric‐ferroelectric phase transition in lead‐free AgNbO3 ceramics for energy storage applications

“…In 2016, breakthrough was reported in AgNbO 3 ‐based ceramics where recoverable energy densities of 2.1 and 2.5 J/cm 3 were achieved in pure and MnO 2 ‐doped AgNbO 3 ceramics . By further modification with Bi 2 O 3 , Ta 2 O 5 and WO 3 dopants, the energy density as well as thermal stability of AgNbO 3 ‐based ceramics have been greatly enhanced, demonstrating that the AgNbO 3 ‐based ceramics are promising for energy storage applications.…”

PLZST antiferroelectric ceramics with promising energy storage and discharge performance for high power applications

“…At present, lead‐free AFEs are drawing more attention because they are environmentally friendly. However, their performance, especially the energy efficiency, still falls behind that of lead‐containing AFEs . In lead‐containing AFEs, the lead lanthanum zirconate titanate (PLZT) and lead lanthanum zirconate stannum titanate (PLZST) are the most widely studied ones.…”

Designing novel sodium bismuth titanate lead‐free incipient perovskite for piezoactuator applications

“…This result can be rationalized by the large energy barrier between the ergodic relaxor phase and the ferroelectric polar phase. 34,35 This illustrates a field-induced irreversible transformation in BZT0-BZT2, whereas the poling field cannot establish polar order in the BZT4-BZT6 samples due to their ergodic relaxor nature. peaks (P 1 ) can be observed for the BZT0 and BZT1 samples, suggesting the typical domain switching behavior of normal ferroelectrics.…”

“…The piezoelectric d 33 values, which represent the irreversible macropiezoelectricity, decrease sharply at the BZT3 composition, indicating the disruption of the long-range ferroelectric domain. 34,35 This illustrates a field-induced irreversible transformation in BZT0-BZT2, whereas the poling field cannot establish polar order in the BZT4-BZT6 samples due to their ergodic relaxor nature. 34,35 Figure 5A-C presents the unipolar S-E curves at various electric fields, frequencies and temperatures, respectively, to further evaluate the practical potential of BZT4 in actuator applications.…”

“…34,35 This illustrates a field-induced irreversible transformation in BZT0-BZT2, whereas the poling field cannot establish polar order in the BZT4-BZT6 samples due to their ergodic relaxor nature. 34,35 Figure 5A-C presents the unipolar S-E curves at various electric fields, frequencies and temperatures, respectively, to further evaluate the practical potential of BZT4 in actuator applications. The electric-field, frequency-and temperaturedependent d * 33 and Hys values are listed in Figure S4A-C, respectively.…”