Controlling internal barrier in low loss BaTiO<sub>3</sub> supercapacitors
Langue
en
Article de revue
Ce document a été publié dans
Applied Physics Letters. 2009, vol. 94, n° 7, p. 072903 (3 p.)
American Institute of Physics
Résumé en anglais
Supercapacitor<sup> </sup>behavior has been reported in a number of oxides including<sup> </sup>reduced BaTiO<sub>3</sub> ferroelectric ceramics. These so-called giant properties are however<sup> </sup>not easily controlled. ...Lire la suite >
Supercapacitor<sup> </sup>behavior has been reported in a number of oxides including<sup> </sup>reduced BaTiO<sub>3</sub> ferroelectric ceramics. These so-called giant properties are however<sup> </sup>not easily controlled. We show here that the continuous coating<sup> </sup>of individual BaTiO<sub>3</sub> grains by a silica shell in combination<sup> </sup>with spark plasma sintering is a way to process bulk<sup> </sup>composites having supercapacitor features with low dielectric losses and temperature<sup> </sup>stability. The silica shell acts both as an oxidation barrier<sup> </sup>during the processing and as a dielectric barrier in the<sup> </sup>final composite.< Réduire
Mots clés en anglais
Low loss
BaTiO3
Supercapacitors
Origine
Importé de halUnités de recherche