Anode-supported tubular solid oxide fuel cells (SOFCs) fabricated by traditional method suffered from the charge exchange constraint on the interface of electrolyte and cathode. In this work, we introduced a new sintering process to obtain the dense and porous electrolyte bi-layer structure on anode-supported tubular SOFCs. The cathode was built by infiltrating nano-catalyst La0.6Sr0.4Fe0.9Sc0.1O3-delta (LSFSc) into the porous electrolyte, which showed better electrochemical activity than traditional LSM cathode. The functional fuel cells showed the maximum power density of 292.3mW.cm(-2) at 800 degrees C with H-2 as fuel and air as oxidant. This unique performance was due to the porous electrolyte provided more specific surface area for cathode and the nanostructured cathode catalyst showed high electro-catalysis for oxygen reduction reaction. Moreover, a long term test was carried out, demonstrating the excellent stability which was extremely important for application in the future. (C) 2014 Elsevier Ltd. All rights reserved.