Enhanced thermal stability of dielectric and energy storage properties in 0.4BCZT-0.6BTSn lead-free ceramics elaborated by sol-gel method

S. Khardazi (1) , H. Zaitouni (1) , A. Neqali (1) , S. Lyubchyk (2) , D. Mezzane (1, 3) , M. Amjoud (1) , E. Choukri (1) , S. Lyubchyk (2) , Z. Kutnjak (4)

1 IMED-Lab - Laboratoire des Matériaux Innovants, Energie et Développement Durable [Marrakech]
2 Lusófona University [Lisbon]
3 LPMC - Laboratoire de Physique de la Matière Condensée - UR UPJV 2081
4 IJS - Jozef Stefan Institute [Ljubljana]

Polycrystalline lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT), BaTi0.89Sn0.11O3 (BTSn) and 0.4Ba0.85Ca0.15Zr0.10Ti0.90O3–0.6BaTi0.89Sn0.11O3 (0.4BCZT–0.6BTSn) ferroelectric ceramics were prepared via sol-gel process and their structural, dielectric and energy storage properties were studied. Pure perovskite structure was confirmed by X-ray diffraction analysis. The evolution of energy storage performances with temperature was studied. A Significant recoverable energy-storage density of 137.86 mJ/cm3 and high energy-storage efficiency of 86.19% under a moderate electric field of 30 kV/cm were achieved in the composite 0.4BCZT–0.6BTSn ceramic at 353 K. Moreover, excellent temperature stability (70–130 °C) of the energy storage efficiency (less than 3%) was achieved.

Mots clés: Sol-gel; Ferroelectrics; Lead-free; Perovskites; Energy storage

Domaines: Matière Condensée [cond-mat]

S. Khardazi, H. Zaitouni, A. Neqali, S. Lyubchyk, D. Mezzane, et al.. Enhanced thermal stability of dielectric and energy storage properties in 0.4BCZT-0.6BTSn lead-free ceramics elaborated by sol-gel method. Journal of Physics and Chemistry of Solids, 2023, 177, pp.111302. ⟨10.1016/j.jpcs.2023.111302⟩. ⟨hal-04082973⟩