Regulating local electric field to optimize the energy storage performance of antiferroelectric ceramics via a composite strategy

• DOI: 10.26599/jac.2023.9220708
• Publication Date: 2023-02-17T09:22:27Z
• Authors: Ying Yang; Zhanming Dou; Kailun Zou; Kanghua Li; Wei Luo; Wen Dong; Guangzu Zhang; Qiuyun Fu; Shenglin Jiang
• Keywords: Antiferroelectricity

Electrostatic energy storage technology based on dielectrics is the basis of advanced electronics and high-power electrical systems. High polarization (<i>P</i>) high electric breakdown strength (<i>E</i>_b) are key parameters for dielectric materials to achieve superior performance. In this work, a composite strategy antiferroelectric (AFEs) has been proposed improve Here, AlN selected as second phase (Pb_0.915Ba_0.04La_0.03)(Zr_0.65Sn_0.3Ti_0.05)O₃ (PBLZST) AFEs, which embedded in grain boundaries construct insulating networks regulate local field, improving <i>E</i>_b. Meanwhile, it emphasized that AFEs have AFE–FE FE–AFE transitions, increase transition fields can further recoverable density (<i>W</i>_rec). As result, <i>E</i>_b increases from 180 290 kV·cm⁻¹ with simultaneous fields, magnifying <i>W</i>_rec ~144% pristine PBLZST. The mechanism enhanced revealed by finite element simulation method. Moreover, PBLZST:1.0 wt% ceramics exhibit favorable temperature stability, frequency charge–discharge ability, making promising candidate applications.