Excellent Energy Storage and Charge-discharge Performances in PbHfO3 Antiferroelectric Ceramics
Excellent Energy Storage and Charge-discharge Performances in PbHfO3 Antiferroelectric Ceramics
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PbHfO3 反铁电陶瓷优异的储能和充放电性能
DOI：
10.1016/j.jeurceramsoc.2018.09.039
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发表时间：
2019-02
影响因子：
5.7
通讯作者：
Wang Hongsheng
中科院分区：
文献类型：
--
作者：
Wei Jing;Yang Tongqing;Wang Hongsheng
采用轧制工艺制备了单相PbHfO3反铁电陶瓷。结果表明，轧制过程可以减小晶粒尺寸并增加体积密度，从而使使用传统固态方法的样品的击穿强度提高至 268kV/cm，而使用传统固态方法的样品为 219kV/cm。结果，实现了 7.6 J/cm3 的高可恢复能量密度，效率为 80.8%。同时，在250kV/cm下观察到1381 A/cm2的大电流密度和高达170 MW/cm3的超高峰值功率密度。此外，还研究了不同电场下独特的电极化响应特性和温度引起的结构相变。本次交流首先研究了 PbHfO3 的储能性能和充放电特性，所有结果表明 PbHfO3 陶瓷是脉冲功率应用的有希望的候选者。
Single phase PbHfO3antiferroelectric ceramics were prepared via rolling process. It is revealed that the rolling process can reduce the grain size and increase the bulk density, which lead to the enhanced breakdown strength up to 268 kV/cm versus 219 kV/cm of samples using the conventional solid-state method. As a result, high recoverable energy density of 7.6 J/cm3with an efficiency of 80.8 % was achieved. Meanwhile, a large current density of 1381 A/cm2and an ultrahigh peak power density up to 170 MW/cm3were observed under 250 kV/cm. In addition, unique electrical polarization response characteristics at different electric fields and temperature-induced structural phase transitions were also investigated. The energy storage performance and charge-discharge properties of PbHfO3were first studied in this communication and all the results indicate that PbHfO3ceramic is a promising candidate for pulse power applications.
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