| 摘要 |
PURPOSE:To prevent performance drop of a cell by adding electrolyte required to supplement electrolyte lost by scattering from a cell, in mist form in fuel gas of phosphoric acid type fuel cell. CONSTITUTION:Carbon base plate having a porosity of 63% is coated with carbon powder catalyst containing 15wt% of platinum to make an electrode. Electrolyte paste comprising phosphoric acid, silicon carbide, and zirconium phosphate is spreaded between two electrodes, then an electrode 1 with which air 2 is brought into contact and an electrode 3 with which hydrogen 4 is brought into contact are arranged to form a phosphoric acid type fuel cell. Phosphoric acid 8 comprising 85% H3PO4 and 15% H2O is supplied to a mist generator 6. Phosphoric acid mist and steam generated at 200 deg.C and they are added to hydrogen 4 to operate the cell. Therefore, electrolyte which is lost by scattering is effectively supplemented to keep a specified amout of electrolyte. This prevents performance drop of the cell. |
