NOVELTY - A direct oxidation fuel cell comprises a membrane electrode assembly having electrolyte with anode and cathode face having catalyst coating, diffusion layers in contact with respective faces and gas permeable membrane parallel to anodic diffusion layer.    USE - In fuel cells systems for generating electricity.    ADVANTAGE - The improved direct oxidation fuel cell is simplified and exhibits fewer power losses, as it does not require the use of pumps and other recirculation components. It also allows adjustments to fuel concentration, which enables fuel to be added only, as it is consumed. Thus, problems associated with methanol crossover and water carryover are reduced due to limiting the introduction of those fluids into the system. The fuel container and delivery assembly is provided, which includes separate conduits from separate containers for methanol and water and a leakproof interface. This allows for mixing water into methanol solution, to improve the ability to adjust the concentration of methanol and water in the system. The fuel container and delivery assembly operates using simple mechanical flow and simplified geometry. This design minimizes loss of methanol and water via carryover and crossover by limiting introduction of those fluids. The passive system, in which fuel is added as it is consumed and carbon dioxide separated, both without pumping, ultimately will increase net power provided to the load due to low parasitic losses.    DETAILED DESCRIPTION - The electricity generating reactions occur upon introduction of fuel solution from an associated fuel source, including anodic dissociation of the fuel solution into carbon dioxide, protons and electrons, and cathodic combinations of protons, electrons and oxygen from an associated source of oxygen, producing water. The anodic diffusion layer has openings to allow associated fuel mixture to pass through to the anode face as fuel is consumed at the anode. The openings on the cathodic diffusion layer allow oxygen to pass through to the cathode face of the membrane electrode assembly. The fluid permeable, gas permeable membrane is disposed such that the fuel solution can pass between the anodic diffusion layer and gas permeable membrane to separate carbon dioxide released at anode face and to vent carbon dioxide from the fuel cell, where the carbon dioxide is removed from the fuel cell without active transport mechanisms. INDEPENDENT CLAIMS are included for the following:    (1) a fuel container and delivery assembly for use with an associated direct oxidation fuel cell system;    (2) removing carbon dioxide from direct oxidation fuel cell;    (3) managing anodic effluent in a direct oxidation fuel cell; and    (4) separating anodically generated gases in a direct oxidation fuel cell.