2007 Volume 32 Issue 4 Pages 951-954
Performance of a fuel cell using Sn0.9In0.1P2O7 and Pt/C as the electrolyte and electrodes, respectively was evaluated in the temperature range of 150-300°C under unhumidified conditions. The cell performance was improved by forming an intermediate layer consisting of Sn0.9In0.1P2O7 and Pt/C catalyst powders at the interface between the electrolyte and cathode, which significantly reduced the cathode polarization. As a result, the peak power density reached 152 mW cm^-2 at 250°C using the 1.0-mm-thick electrolyte. The present fuel cell also showed high stability at low relative humidities (PH2O ~ 0.0075 atm) and 10% CO concentration. We also tested performance of a fuel cell using Mo2C-Zr02/C as the anode between 150 and 300°C. It was found that at 250°C or higher, the Mo2C-ZrO2/C anode showed a cell performance comparable to that of the Pt/C anode.
