Aerosol Jet® Printing of functionally graded SOFC anode interlayer and microstructural investigation by low voltage scanning electron microscopy

► Aerosol jet printing, a new method used for solid oxide fuel cells fabrication. ► Printed porous anode interlayer with compositional grading and dense electrolyte. ► Cells with graded interlayer performed better than cells with non-graded interlayers. ► Printed layers had highly reproducible microstructure and electrochemical performance. ► Low voltage scanning electron microscopy clearly distinguished Ni, YSZ and pores.