Microstructural and electrical characterization of Nb-doped SrTiO3-YSZ composites for solid oxide cell electrodes

► Preparation and characterization of Nb-doped SrTiO3-YSZ composites. ► Chemical compatibility between Nb-doped SrTiO3 and YSZ phases. ► Influence of YSZ content on the microstructure and electrical conductivity. ► Potential ceramic composite electrodes for solid oxide cells.