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

School of Physics & Optoelectric Engineering, Guangdong University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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Academic Editor: Lorena Pardo
Materials 2017, 10(2), 143; https://doi.org/10.3390/ma10020143
Received: 23 December 2016 / Revised: 23 January 2017 / Accepted: 3 February 2017 / Published: 8 February 2017
(This article belongs to the Section Energy Materials)
(Pb0.97La0.02)(Zr0.95Ti0.05)O3 (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 150 to 200 °C. Electric field induced ferroelectric to antiferroelectric phase transition behavior of the (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics was investigated in this work with an emphasis on energy storage properties. A recoverable energy-storage density of 0.83 J/cm3 and efficiency of 70% was obtained in (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics at 55 kV/cm. Based on these results, (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics with a large recoverable energy-storage density could be a potential candidate for the applications in high energy-storage density ceramic capacitors. View Full-Text
Keywords: PLZT2/95/5 ceramics; antiferroelectric; oxygen vacancies; energy storage density PLZT2/95/5 ceramics; antiferroelectric; oxygen vacancies; energy storage density
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Li, B.; Liu, Q.; Tang, X.; Zhang, T.; Jiang, Y.; Li, W.; Luo, J. High Energy Storage Density and Impedance Response of PLZT2/95/5 Antiferroelectric Ceramics. Materials 2017, 10, 143.

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