NOVELTY - The fuel cell system (600) has a fuel distribution structure (720) with fuel feed port that receives and injects liquid fuel to flow field plate. The flow channels convey heat to fuel passing there through to convert liquid fuel to vaporous fuel within the flow channels. The exit ports deliver the resulting vaporous fuel to anode aspect to uniformly distribute fuel across the anode aspect. An enthalpy exchanger and heat spreader assembly is in thermal contact with fuel distribution structure and provides heat from fuel cell operation to fuel distribution structure.    USE - Direct oxidation fuel cell system.    ADVANTAGE - Reduces occurrence of uneven fuel distribution that leads to hot spots and avoids build up of water condensation since vaporization is not occurring in close proximity to the active area on anode. Reduces number of components required in the fuel cell system since more functions are performed by single component, thus contributing to smaller form factor, and simplification of the manufacturing process. Provides direct oxidation fuel cell system with uniform fuel distribution from single-point of fuel injection and fuel feed rate that is not dependent upon the cell temperature. The fuel cell system has heat management and water management features that are incorporated directly within the fuel cell components and which use the waste heat of the fuel cell system to provide the heat needed for the fuel to vaporize. The vapor pressure of fuel provides the pressure to uniformly distribute fuel to the membrane electrode assembly (MEA) and avoids hot spots. The carbon dioxide release features further help to evenly distribute the fuel by keeping the carbon dioxide at ambient pressure, which is lower than the pressure of the vaporizing fuel.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a direct oxidation fuel cell method.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of the fuel cell system.    Fuel cell system (600)    Fuel distribution structure (720)    MEA (730)    Enthalpy exchanger and heat management assembly (738)    Heat spreader elements (750,788)