Giant energy storage density in Ba, La co-doped PbHfO3-based antiferroelectric ceramics by a rolling process

By chemical substitutions with Ba2+ and La3+ at A-site in PbHfO3-based ceramics, an ultrahigh energy storage efficiency of 91% and high energy density of 7.3 J cm−3 are achieved simultaneously at 290 kV cm−1 in Pb0.925Ba0.045La0.03(Hf0.6Sn0.4)0.9925O3 ceramics. [Display omitted] Near-zero remanent p...

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Bibliographic Details
Published in:Journal of alloys and compounds 2021-12, Vol.888, p.161539, Article 161539
Main Authors: Guo, Jingjing, Yang, Tongqing
Format: Article
Language:English
Subjects:
Antiferroelectric ceramics
Antiferroelectricity
Ceramics
Composition
Composition modulation
Density
Electric fields
Energy storage
Hysteresis
Polarization
Saturation
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Summary:By chemical substitutions with Ba2+ and La3+ at A-site in PbHfO3-based ceramics, an ultrahigh energy storage efficiency of 91% and high energy density of 7.3 J cm−3 are achieved simultaneously at 290 kV cm−1 in Pb0.925Ba0.045La0.03(Hf0.6Sn0.4)0.9925O3 ceramics. [Display omitted] Near-zero remanent polarization, high breakdown electric field, high saturation polarization and low electrical hysteresis are necessary conditions for antiferroelectric ceramics to obtain excellent energy storage performance. Here, Pb0.925BaxLa0.075−x(Hf0.6Sn0.4)0.98125+x/4O3 lead-based antiferroelectric ceramics were prepared by a rolling process. The composition modulations of Ba and La are beneficial to adjust the phase switching field, improve the saturation polarization and reduce the electrical hysteresis, leading to an enhanced energy storage performance. Simultaneously, the Pb0.925Ba0.045La0.03(Hf0.6Sn0.4)0.9925O3 ceramic exhibited a high energy storage density of 7.3 J cm−3 and an energy storage efficiency of 91%, revealing that this composition is an outstanding candidate in pulsed energy storage application and lays a foundation for further study on the energy storage performances of PbHfO3-based antiferroelectric ceramics.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.161539