HANANI, Zouhair; MERSELMIZ, Soukaina; AMJOUD, M’barek; MEZZANE, Daoud; LAHCINI, Mohammed; GHANBAJA, Jaafar; SPREITZER, Matjaž; VENGUST, Damjan; EL MARSSI, Mimoun; LUK'YANCHUK, Igor A.; KUTNJAK, Zdravko; ROŽIČ, Brigita; GOUNÉ, Mohamed

doi:10.1016/j.jmat.2021.12.011

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HANANI, Zouhair
Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech] [IMED-Lab ]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Jozef Stefan Institute [Ljubljana] [IJS]

MERSELMIZ, Soukaina
Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech] [IMED-Lab ]

AMJOUD, M’barek
Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech] [IMED-Lab ]

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Journal of Materiomics. 2022, vol. 8, n° 4, p. 873-881

The Chinese Ceramic Society

Résumé en anglais

The eco-responsible lead-free piezoelectric ceramics have been intensively searched for more than a decade, however, the final goal to replace toxic ceramics like lead zirconate titanate (PZT) with lead-free compounds, having comparable or even better performance has not yet been reached. In this road, the lead-free ceramics Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT), possessing excellent dielectric, ferroelectric, and piezoelectric properties are regarded as serious candidates for the PZT replacement. Besides, nanostructuring BCZT is of paramount importance to enhance these functionalities even more. Here, BCZT multipodes are designed by template-growth hydrothermal synthesis using hydrogen zirconate titanate nanowires. We demonstrate that the fabricated BCZT multipodes exhibit high dielectric permittivity of 5300 with a temperature stability coefficient of ±5.9% between 20 and 140 °C. A significant recovered energy density of 315.0 mJ/cm3 with high thermal stability and high energy storage efficiency of 87.4%, and enhanced large-signal piezoelectric coefficient (310 pm/V) are found. Compared to the traditional BCZT ceramics reported in the literature, relying on high-temperature processing, our sample exhibits boosted energy storage parameters at a much lower temperature. These outcomes may offer a new strategy to tailor eco-responsible relaxor ferroelectrics toward superior energy storage performance for ceramic capacitor applications.< Réduire

Mots clés en anglais

Lead-free ceramics

Low temperature

Piezoelectric

Thermal stability

Energy storage

Nanostructuration

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Novel lead-free BCZT-based ceramic with thermally-stable recovered energy density and increased energy storage efficiency

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