Journal
ACS NANO
Volume 14, Issue 6, Pages 6857-6865Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c00791
Keywords
Ca-doped PbZrO3; thin films; microstructure; electric breakdown strength; recoverable energy storage
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Funding
- Basic Scientific Research Projects of Colleges and Universities of Liaoning Province of China [LZGD2017005]
- major project of Industrial Technology Research Institute of Liaoning Colleges and Universities [201824010]
- National Basic Research Program [2017YFA0206302]
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In recent years, antiferroelectric materials have been attracting considerable attention as energy storage capacitors due to their potential applications in pulsed power systems. In this work, antiferroelectric Pb0.88Ca0.12ZrO3 (PCZ) thin films were prepared via chemical solution deposition and more) annealed using rapid thermal annealing. The microstructures of PCZ thin films were controlled via annealing temperature, and the effects of microstructures on electric properties and energy storage performance were systematically studied. Our results indicate that PCZ thin films annealed at 550 degrees C crystallized into a nanocrystalline structure of the pyrochlore phase, while also displaying the highest recoverable energy density and efficiency (91.3 J/cm(3) and 85.3%). We attribute the ultrahigh energy storage properties mainly to dramatic improvements in the electric breakdown strength caused by the dense nanocrystalline structure. The findings reported herein help to elucidate the relationship between energy storage performance and thin-film microstructure, thereby providing an effective way for improving the energy storage performance of antiferroelectric thin films.
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