CONTROLLED DIRECT LIQUID INJECTION VAPOR FEED FOR A DMFC

摘要

A fuel cell system having a methanol vapor delivery component or film is pro­vided. The component includes an evaporation pad. The evaporation pad is disposed within the fuel cell generally parallel to the anode diffusion layer, but with a vapor gap provided between the evaporation pad and the anode diffusion layer. A fuel delivery conduit having at least one injection port is provided through which liquid fuel is deliv­ered from an associated source of highly concentrated fuel into the evaporation pad, at a controlled, adjustable rate. Multiple parallel liquid delivery points can also be provided. In order to ensure uniform delivery of fuel across the across the active area of the anode, one or more dispersion members are placed on the evaporation pad to effectively dis­perse the fuel laterally around each injection port.