| 摘要 |
PURPOSE:To make it possible to preserve the electrolyte of a fuel cell with ease without giving any harmful effect on its gas diffusibility by providing a water repellant layer independent and separated from an electrode base plate. CONSTITUTION:Between an electrode base plate 3a, which has a catalyst layer 2a on one side and a small gas flow groove on the opposite side, and an electrode base plate 3b, which has a catalyst layer 2b on one side and a fuel gas flow passage on the opposite side, is provided a matrix which contains an electrolyte 5; and, between this electrolyte 5 and the electrode base plate 3a and the electrode base plate 3b, electrode plates 8a and 8b are respectively provided independently and separately from each other. The electrode plates 8a, 8b consist of carbon paper, whose main constituent is carbon fiber, with PTFE-diffused liquid applied on it, and they are like a thin leaf in shape and have an appropriate water repellency. The electrolytic liquid in the electrolyte 5 penetrates into the electrode plates 8a, 8b and reaches the catalyst layers 2a, 2b of the electrode base plates 3a, 3b, and comes in contact with the gas coming from the gas flow passage formed on each electrode plate, causing an electromotive force through the catalyst reaction. |
