TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Fuel Cell: In the fuel cell above, the first flow field plate and the second flow field plate comprise solid, non-porous structures. The inlet channels of the first flow field plate are aligned with the inlet channels of the second flow field plate. A fluid inlet for each of the inlet channels of the first flow field plate are disposed on a side opposite a fluid inlet for each of the inlet channels of the second flow field plate providing counter flows of fluids through the fuel cell. Each of the first and second flow field plates comprise ribs separating each inlet channel from each outlet channel, where fluid transfers across the rib from the inlet channel to the outlet channel. Ribs of the first and second flow field plates are aligned longitudinally with each other. Each of ribs within each of the first and second flow field plates comprises a common width. Ribs in the first and second flow field plates include a width, with at least one width in the first flow field plate being different than at least one width in the second flow field plate. A width of each of ribs in the first flow field plate is matched to a width in a corresponding rib in the second flow field plate to match flow fields between the first and second flow field plates. A first flow field of fluid in the first flow field plate is matched with a second flow field of air in the second flow field plate to provide a desired exchange of water between the first and second flow fields. Preferred Method: In the method above, the first and second flow field plates comprise solid non-porous structures. The method further comprises transferring the fuel over at least one first rib disposed between the first inlet channel and the first outlet channel, and transferring the oxidant over at least one second rib between the second inlet channel and the second outlet channel. Matching the first flow field with the second flow field includes longitudinally aligning the at least one first rib with the at least one second rib. The method also comprises overlapping low pressure areas of the first flow field with high pressure areas of the second flow field; and matching interdigitated flow fields within the first flow field plate with an interdigitated flow field within the second flow field plate.