Abstract
AbstractIn this work, Sr0.8Ce0.1TiO3 (SCT) was doped into BiFeO3–BaTiO3 (BF–BT) to form a ternary solid solution with relaxor ferroelectric characteristics. Constricted P–E loops were observed due to the composition‐induced phase transition, and a significant grain size reduction was observed in the SCT‐doped ceramics. The elongated P–E hysteresis loops revealed that the ternary system had good energy storage characteristics. BF–BT–0.4SCT ceramics possessed the maximum recoverable energy storage (Wrec) of 1.94 J/cm3 and efficiency (η) of 76.1 % under an electric field of 190 kV/cm. More importantly, the BF–BT–0.4SCT ceramic exhibited excellent fatigue endurance (∆Wrec < 1.1%, after 103 fatigue cycles) under an electric field of 100 kV/cm, superior to most previous works. At the same time, the BF–BT–0.4SCT ceramic also showed high frequency stability, and fast discharge rate (t0.9 < .05 µs). In addition, the BF–BT–0.4SCT ceramic also exhibited considerable charging–discharging performance with a relatively high current density (127 A/cm2) and power density (5.8 MW/cm3). Therefore, this work helps broaden the development of BF‐based and other lead‐free ceramics for energy storage applications.
Published Version
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