ZAHID, Marwa; HADOUCH, Youness; AMJOUD, M’barek; MEZZANE, Daoud; GOUNÉ, Mohamed; HOUMMADA, Khalid; ALIMOUSSA, Abdelhadi; RAZUMNAYA, Anna; ROŽIČ, Brigita; KUTNJAK, Zdravko

doi:10.1007/s10854-022-08233-6

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ZAHID, Marwa
Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech] [IMED-Lab ]

HADOUCH, Youness
Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech] [IMED-Lab ]
Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 [LPMC]

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

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Journal of Materials Science: Materials in Electronics. 2022-04-27, vol. 33, n° 16, p. 12900-12911

Springer Verlag

Résumé en anglais

Lead-free perovskite materials with high performance have high potential in clean energy storage applications and developments of electrocaloric devices. In this work, we report structural, dielectric, ferroelectric properties, energy storage and electrocaloric effectnear the ambient temperature in barium stannate titanate (BaTi 0.89 Sn 0.11 O 3, BTS 11) ceramic prepared by a sol-gel method. The formation of a single perovskite structure was confirmed using the X-ray diffraction analysis. An average grain size of 18.5µm was found by the mean of the SEM micrograph with a density of 5.91 g/cm 3 .The presence of the multiphase at very near ambient temperature was proved using temperature-dependent micro-Raman measurements and differential scanning calorimetry. The BTS 11 ceramic exhibits a high dielectric constant of 15460and a low dielectric loss (<0.055) with considerable temperature stability. Moreover, a high energy storage density of 122mJ/cm 3 was showed with an efficiency of 79%, and a maximum value of ECE (ΔT) of 0.86 K and finally, an electrocaloric responsivity (ΔT/ΔE) of 0.24 K.mm/kV under the external electricfield of 35 kV/cm near ambient temperature. The enhanced dielectric, ferroelectric and electrocaloric properties in BTS 11 ceramic makes it a great potential candidate for its uses in solid-state cooling technology and high-energy storage applications near ambient temperature.< Réduire

Mots clés en anglais

Lead-free

sol-gel process

energy storage

electrocaloric effect

ambient temperature

barium stannate titanate

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Enhanced near-ambient temperature energy storage and electrocaloric effect in the lead-free BaTi0.89Sn0.11O3 ceramic synthesized by sol–gel method

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