The unique anode supported solid oxide fuel cell called gas channel integrated cell is introduced in this paper. The cell has the flat-tubular structure with the appearance of the planar cell, therefore has the great advantage in the volumetric power density. The cell was fabricated by molding the planer anode substrate with the gas channel preform and burning out it during the firing process. The entire surfaces of the anode substrate are covered with the thin film electrolyte and the cathode layers are printed on the both electrolyte surface. The fabricated cells have the size of 10 cm x 11 cm and 2mm in thickness. The electric power generation was implemented with the single cell at 800{degree sign}C with the hydrogen. The generated power of 30 W was comparable to that in the conventional planar cell.
The design of the gas channel integrated cell was reconsidered to reduce the cell thickness without increasing the cell resistance. The cell resistance was decreased by the reduction of the current collection distance. Furthermore, the changing of the current collection window position also decreased the cell resistance. The new design cell showed the same power density as the former design cell, indicating that the thickness of the cell was successfully reduced without any decrease of the cell power output. The power output of the new design cell was 1.6 times larger than that of the planar cell with the same cell size. The large power output per cell was a great advantage of the GCI cell.
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