Preparation of honeycomb porous La0.6Sr0.4Co0.2Fe0.8O3−δ-Gd0.2Ce0.8O2−δ composite cathodes by breath figures method for solid oxide fuel cells

► Honeycomb porous structured LSCF-GDC composite cathodes are prepared. ► The breath figures method is introduced to prepare SOFC cathode films. ► The ordered micron-sized pores guarantee quick gas transmission.