The conductive coated film is a carbon film, a conductive inorganic compound film or a metal-plated film containing particles of a water-repellent material. The conductive inorganic compound is an oxide, nitride or carbide. The conductive separator plate comprises a metallic sponge and carbon powder which is filled in the sponge and covered on its surface. The water repellent material can be fluoride pitch and/or fluoride graphite. The water repellent material can be at least one polymer selected from polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer. The metallic plated film contains at least one metal selected from Au, Ag, Ni and Cr. The anode-side separator plate comprises a metal plate having grooves, for introducing a fuel gas on the surface facing the anode and an elastic insulating sheet as a gasket. The cathode-side separator plate comprises a metal plate having grooves, for introducing an oxidizing gas, on the surface facing to the anode and an elastic insulating sheet. The anode-side and cathode-side separators each comprise a metal plate coated with anti-oxidizing film and at least one rough surface on the convex side of which an electrode is connected. The conductive particles are made of a material having higher hardness than the separator plaEXAMPLE - A catalytic layer was formed by coating a paste comprising Pt particles carried on acetylene black dispersed in isopropanol, and perfluorocarbon sulfonate powder dispersed in alcohol, on a carbon nonwoven cloth so as to prepare an anode and a cathode. An electrode- electrolyte film assembly was prepared by jointing these electrodes by a hot press. The electrolyte film was made of perfluorocarbon sulfonate. Grooves (1 mm depth ) were formed on the surface of a stainless sheet plate and the oxide film was removed from the surface by Ar-spattering and forming an SnO2 film on the surface. The plate and an insulating sheet were adhered to each other so as to obtain a separator. The obtained laminated cell was connected to an electric collector via an insulator so as to obtain a fuel cell. The obtained cell generated 1000W of electricity ( 22V- 45A ) over an 8000 hr period.