Abstract
Both high energy density and high energy efficiency are indispensable as considering antiferroelectric materials for pulse power capacitor applications. However, the electrical hysteresis will inevitably limit the energy efficiency reported in previous literatures. In this work, lead lanthanum zirconate stannate titanate (PLZST) antiferroelectrics with both high energy density and high energy efficiency was presented. It is found that PLZST antiferroelectric ceramics with high Sn content not only exhibit enhanced antiferroelectricity, but also demonstrate higher energy efficiency. As Sn content increases, grain size decreases and the electric hysteresis values reduces. The high energy density of 1.28 J/cm3 and ultrahigh energy efficiency of 91% was obtained for PLZST30/60/10. The results will not only enrich our understanding of PLZST antiferroelectric materials but also offers new approach to developing high performance antiferroelectric for energy storage based applications.
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