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Electrocaloric effect and high energy storage efficiency in lead-free Ba0.95Ca0.05Ti0.89Sn0.11O3 ceramic elaborated by sol-gel method

Abstract : Structural, dielectric, ferroelectric, energy storage properties, and electrocaloric effect were studied in lead-free ceramic Ba0.95Ca0.05Ti0.89Sn0.11O3 (BCTSn) elaborated by the sol-gel method. Phase purity structure was confirmed from X-ray data using the Rietveld refinement analysis which revealed the coexistence of tetragonal (P4mm) and orthorhombic (Amm2) symmetries at room temperature. Phase transitions were detected by dielectric and differential scanning calorimetry measurements. The energy storage properties were determined from P-E hysteresis, and the electrocaloric properties were calculated indirectly via the Maxwell approach. The large value of electrocaloric temperature change of Delta T = 0.807 K obtained at a relatively small electric field of 30 kV cm(-1), and the high energy storage efficiency can make BCTSn ceramic a promising candidate for environmentally friendly refrigeration and energy storage applications.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03627363
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Soumis le : vendredi 1 avril 2022 - 11:33:17
Dernière modification le : lundi 4 avril 2022 - 16:58:27

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Youness Hadouch, Said Ben Moumen, Hanane Mezzourh, Daoud Mezzane, M'Barek Amjoud, et al.. Electrocaloric effect and high energy storage efficiency in lead-free Ba0.95Ca0.05Ti0.89Sn0.11O3 ceramic elaborated by sol-gel method. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2022, 33 (4), pp.2067-2079. ⟨10.1007/s10854-021-07411-2⟩. ⟨hal-03627363⟩

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