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In this work, a new lead‐free relaxor ferroelectric 0.60BiFeO 3 ‐0.34BaTiO 3 ‐0.06Sr(Al 0.5 Nb 0.5 )O 3 ( BBFTO ‐ SAN ) ceramic was prepared via the conventional solid‐state reaction method. High recoverable energy density (1.75 J/cm 3 ) and efficiency (81%) were achieved, which is superior to some other lead‐free ceramics. Good thermal stability in a wide temperature range (30‐120°C) was also investigated in this system. Moreover, we first studied the charge‐discharge performance of bulk BFO ‐based energy storage ceramics and obtained an ultra‐high power density p D (~57 MW/cm 3 ) as well as a large current density value of ~1353 A/cm 2 . Consequently, all the results indicate that this ceramic is a promising lead‐free candidate for energy storage materials.
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Liu et al. (2018) studied this question.
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