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Structure variation and energy storage properties of acceptor‐modified PBLZST antiferroelectric ceramics
Author(s) -
Liu Pin,
Zhang Yujing,
Zhu Yiwei,
Fan Baoyan,
Li Wenru,
Zhang Haibo,
Jiang Shenglin
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16094
Subject(s) - antiferroelectricity , materials science , dielectric , ceramic , microstructure , energy storage , ferroelectricity , power density , acceptor , phase (matter) , phase transition , analytical chemistry (journal) , composite material , optoelectronics , chemistry , condensed matter physics , thermodynamics , organic chemistry , power (physics) , physics
Energy storage capacitors with high recoverable energy density and efficiency are greatly desired in pulse power system. In this study, the energy density and efficiency were enhanced in Mn‐modified (Pb 0.93 Ba 0.04 La 0.02 )(Zr 0.65 Sn 0.3 Ti 0.05 )O 3 antiferroelectric ceramics via a conventional solid‐state reaction process. The improvement was attributed to the change in the antiferroelectric‐to‐ferroelectric phase transition electric field ( E F ) and the ferroelectric‐to‐antiferroelectric phase transition electric field ( E A ) with a small Mn addition. Mn ions as acceptors, which gave rise to the structure variation, significantly influenced the microstructures, dielectric properties and energy storage performance of the antiferroelectric ceramics. A maximum recoverable energy density of 2.64 J/cm 3 with an efficiency of 73% was achieved when x = 0.005, which was 40% higher than that (1.84 J/cm 3 , 68%) of the pure ceramic counterparts. The results demonstrate that the acceptor modification is an effective way to improve the energy storage density and efficiency of antiferroelectric ceramics by inducing a structure variation and the (Pb 0.93 Ba 0.04 La 0.02 )(Zr 0.65 Sn 0.3 Ti 0.05 )O 3 ‐ x Mn 2 O 3 antiferroelectric ceramics are a promising energy storage material with high‐power density.