NOVELTY - Fuel cell stack comprises: at least two fuel cells separated by a composite separator plate, the composite separator plate including a non-metallic porous core, a first metal layer on a first side of the porous core and a second metal layer on a second side of the porous core opposite the first side; where the first metal layer is joined to the second metal layer, and where at least one of the first and second metal layers have through holes formed to allow fluid communication with the porous core, and where the first and second metal layers have flow field channels formed in outer surfaces.    USE - The fuel cell stack is useful for portable, stationary and automobile applications.    ADVANTAGE - The fuel stack can effectively manage water transport in the stack, and have low component fabrication and stack assembly cost.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) a fuel cell device comprising: a container; and the fuel cell stack disposed within the container;    (2) a separator plate for separating fuel cells in a fuel cell stack comprising: a porous core formed from a non-metallic material; a first metal layer on a first side of the porous core; and a second metal layer on a second side of the porous core opposite the first side; where the first metal layer is electrically connected to the second metal layer, and where at least one of the first and second metal layers have through holes formed to allow fluid communication with the porous core, and where the first and second metal layers have flow field channels formed in outer surfaces; and    (3) a twin mono-polar fuel cell comprising: a first membrane electrode assembly having an electrode of a first type and an electrode of a second type; a second membrane electrode assembly having an electrode of the first type and an electrode of the second type; and a center separator/current collector plate positioned between the first membrane electrode assembly and the second membrane electrode assembly; a first outer current collector plate positioned on a side of the first membrane electrode assembly opposite the center separator plate; and a second outer current collector plate positioned on a side of the second membrane electrode assembly opposite the center separator plate; where the first and second membrane electrode assemblies are positioned such that the electrode of the first type of each of the first and second membrane electrode assemblies are facing the center separator/current collector plate and where the first outer plate and the second outer plate cover substantially the entire active area of the electrodes of the second type.