In an SOFC stack, the interface between the cathode and the interconnect plays an important role on the measured performance of a single cell. A contact between cathode/interconnect and cathode/current collecting cathode was designed to investigate mechanism of cathodic current collector on cell performance. The cell covered with Ag paste on the cathode side exhibits slightly higher power density than that of the cell partially covered with Ag paste. The Ag paste was applied on the cathode side at the corresponding position in contact with the punctuate structure of the interconnect as current-collecting layer. The difference in power densities between the two unit cells was mainly due to the electron transverse transfer on the cathode surface. When the structure of the interconnect was changed from a convex punctuate structure to contentious liner strips. It is found that the cell performance is driven by both gas flow and electron transverse transfer. The effect of electron transverse transfer on cell performance was more significant than that of gas flow rate. The cumulative effect of the transverse electron cannot be neglected. Furthermore, we will report a newly cell structure, so-called “hollow symmetric anode-supported planar solid oxide fuel cell”. The cell remains flat before and after reduction. The pressure of anti-failure load was about 20 times larger than that of conventional anode supported substrates. Meantime, its performance is nearly identical as that of the traditional anode-supported cell. The designed cell can be scaled easily and is cost effective.