High Energy Storage Density and Impedance Response of PLZT2/95/5 Antiferroelectric Ceramics

Abstract

(Pb 0.97 La 0.02 )(Zr 0.95 Ti 0.05 )O 3 (PLZT2/95/5) ceramics were successfully prepared via a solid-state reaction route. The dielectric properties were investigated in the temperature region of 26-650 • C. The dielectric diffuse anomaly in the dielectric relaxation was found in the high temperature region of 600-650 • C with increasing the measuring frequency, which was related to the dynamic thermal process of ionized oxygen vacancies generated in the high temperature. Two phase transition points were detected during heating, which were found to coexist from

Antiferroelectric to relaxor ferroelectric phase transition in PbO modified (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics with a large energy-density for dielectric energy storage

“…The characteristic temperatures of T o decreased, whereas T C increased. 14 The temperature of the FE-AFE phase transition, Curie temperature and maximum relative permittivity were shown in Table 1. With lead excess content 10% and 15%, the small anomalous peak T o was wide humps, which could be the phase tetragonal AFE phase and rhombohedral FE phase.…”

“…(Pb 0.97(1+x) La 0.02 )(Zr 0.95 Ti 0.05 )O 3 ceramics with excess lead content (x ¼ 0, 3%, 5%, 7.5%, 10% and 15%) were successfully prepared via a solid-state reaction route. Compared with the previous study, 14 the experimental process used high purity lead oxide PbO and cold isostatic pressure technology. Raw materials of PbO (99%), TiO 2 (99%), ZrO 2 (99%) and La 2 O 3 (99.9%) were weighed according to the formula (Pb 0.97(1+x) La 0.02 )(Zr 0.95 -Ti 0.05 )O 3 in the required stoichiometry with different excess lead content.…”

“…In this work, the typical PLZT2/95/5 ceramics were fabricated in order to investigate the effects of excess lead content on the energy-storage performance. Compared with the previous study, 14 the experimental process used high purity lead oxide PbO and cold isostatic pressure technology. These measurements were done by immersing the ceramics in silicone oil at the electric eld of dielectric breakdown strength (90 kV cm À1 ).…”

Recent progress of ecofriendly perovskite-type dielectric ceramics for energy storage applications

“…Lead-based antiferroelectric (AFE) ceramics have been studied and much progress has been made in the last few decades. (i) Through A-and B-site atom substitution, the critical AFE-ferroelectric (FE) transition field can be tailored; [10][11][12][13][14][15][16] (ii) Special sintering techniques have been adopted, such as hot-press and rolling processing, to improve microstructure and density, and both are believed to be efficient approaches for obtaining excellent energy storage properties in AFE ceramics. 17,18 The mechanism of energy storage in AFE involves the dipoles in AFE ceramics being antiparallel in arrangement and an electricfield induced AFE-FE transition utilized to store energy.…”

B-site non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)O3antiferroelectric ceramics for energy storage

“…Recent progress in the investigation on the physical properties of (Pb 0.97 La 0.02 )(Zr 0.95 Ti 0.05 )O 3 (PLZT2/95/5) ceramics [11] revealed interesting behavior in the electric field dependence of polarization (P-E hysteresis loops) at different temperatures. Results have shown that the energy-storage density and efficiency achieved about 0.83 J/cm 3 and 70%, respectively, which is an improvement compared to the previous works [12][13][14][15].…”