NOVELTY - The fuel cell (10) has a polymeric molecular structure maintaining a water molecule, and an electrolyte layer material that moves a hydrogen ion and the water molecule along the thickness direction. The polymeric molecular structure includes an easily movable orientation state for the water molecule, in the planar direction of the electrolyte layer material, rather than other thickness regions along the thickness direction.    USE - For use in portable electronic devices, such as digital camera, digital camcorder, small projector, small printer, notebook computer, and other electronic devices.    ADVANTAGE - The submergence of a portion with prosperous electric power generation or a portion with dull evaporation of generated water is suppressed effectively, so the area of the portion with an appropriate wettability is expanded rapidly, and the standing of electric power at the time of starting is brought forward. The local submergence of the electrolyte layer material can be prevented, without depending on a forced and active method. The electric power generation efficiency is improved and is maintained for a long time period, and high output is realizable even the fuel cell is small and lightweight.    DETAILED DESCRIPTION - The polymeric molecular structure orientates more strongly in planar direction, than a basic layer containing a polymeric molecular structure with an easy movement of water molecule in an orientation direction. A functional layer joined to the basic layer, is positioned at the other side surface of electrolyte layer material. A discharge layer takes in the water molecule from a surface of electrolyte layer material, and discharges through another surface. A porous catalyst layer is joined to the surfaces of electrolyte layer material. An INDEPENDENT CLAIM is included for electrolyte layer material comprising an anode side catalyst layer joined integrally with the basic layer, which forms uptake surface of the hydrogen ion, and the cathode side catalyst layer joined integrally with the functional layer, which forms an oxygen reaction surface.    DESCRIPTION OF DRAWING(S) - The figure shows an explanatory view of the whole structure of a fuel cell. (Drawing includes non-English language text)    Opening (8)    Fuel cell (10)    Cell stack (10A)    Fuel tank (10B)    Electric power generation cell (10S)