Perovskite oxides obtained from Ba1−xLaxFeO3−δ (BLF) are considered beneficial materials for electrodes of solid oxide fuel cells and oxygen permeation membranes because their high permeability, which is a criterion ion (O2−)-electronic mixed conductivity. In this paper, the prime focus was to understand mechanism through surface exchange bulk diffusion Ba0.5La0.5FeO3−δ (BLF55) sample. The perm...

The classical 1D continuum model of oxygen exchange in a porous mixed conductor (bulk path) is presented terms Linear Sweep Voltammetry (LSV) and Cyclic (CV). We show that, from formal point view, it corresponds to an insertion, diffusion chemical reaction mechanism. Some general rules for LSV/CV curves are established. Using dimensionless description, we evidence eight different limiting behav...

Perovskite and metal oxides-based dual-layer hollow fibre membrane (DHF) has a high appeal as separator catalyst for methane conversion application which operated at intermediate temperature. The mostly fabricated via the co-extrusion followed by co-sintering method, is quite challenging, due to complexity handle barrier between layers from delamination, cracking crystal structure distortion af...

(Bi,Sr)FeO3-δ (BSF) cathode materials doped with either Co, Ni or Mn are synthesized by an ethylene diamine tetra-acetic acid (EDTA)-citrate complexing method, and the effects of the doping level on the mixed electronic-ionic conductivity at various temperatures are studied up to 800 °C. The phase purity and solid solution limit are investigated by X-ray diffraction (XRD). The ionic conductivit...

A strong correlation exists between the performance of Solid Oxide Cells (SOCs), working either in fuel cell or electrolysis mode, and their electrodes microstructure. However, the basic relationships between the three-dimensional characteristics of the microstructure and the electrode properties are not still precisely understood. Thus, several studies have been recently proposed in an attempt...