A fuel cell assembly comprising: a fuel cell plate structure, in which gas flow channels are arranged to carry process gas adjacent the active areas (108, 114) of a fuel cell and the inactive wet seal areas (104a, 106a, 110a, 112a) of a fuel cell, the plate structure having one or more baffles (120, 122, 124, 126, 128, 130) arranged such that when the plate structure is in a fuel cell the baffles (120, 122, 124, 126, 128, 130) of the plate structure cause the process gas flowing adjacent the inactive wet seal areas (104a, 106a, 110a, 112a) of the fuel cell to be directed away from the inactive wet seal areas (104a, 106a, 110a, 112a) of the fuel cell and toward the active areas (108, 114) of the fuel cell, wherein said plate structure is adapted to be used in adjacent first and second fuel cells and includes: a bipolar plate having opposing anode and cathode surfaces (102a, 102b) bordered by first and second opposing edges (103a, 105a) of the bipolar plate and third and fourth opposing edges (103b, 105b) transverse to said first and second opposing edges (103a, 105a) of the bipolar plate; first and second pocket areas (104, 106) situated on said anode surface of said bipolar plate at said first and second opposing edges (103a, 105a) of said bipolar plate, respectively; and third and fourth pocket areas (110, 112) situated on said cathode surface of said bipolar plate at said third and fourth opposing edges (103b, 105b) of said bipolar plate, respectively; wherein said first and second pocket areas (104, 106) and said third and fourth pocket areas (110, 112) of said bipolar plate are inactive wet seal areas (104a, 106a, 110a, 112a) of said first and second fuel cells, respectively, when said plate structure is used in said first and second fuel cells; wherein said anode surface of said bipolar plate between said first and second pocket areas (104, 106) of said bipolar plate and said cathode surface of said bipolar plate between said third and fourth pocket areas (110, 112) of said bipolar plate are active areas of a said first and second fuel cells, respectively, when said plate structure is used in said first and second fuel cells; and wherein said one or more baffles (120, 122, 124, 126, 128, 130) are situated in one or more of said first, second, third and fourth pocket areas (104, 106, 110, 112). a fuel cell plate structure, in which gas flow channels are arranged to carry process gas adjacent the active areas (108, 114) of a fuel cell and the inactive wet seal areas (104a, 106a, 110a, 112a) of a fuel cell, the plate structure having one or more baffles (120, 122, 124, 126, 128, 130) arranged such that when the plate structure is in a fuel cell the baffles (120, 122, 124, 126, 128, 130) of the plate structure cause the process gas flowing adjacent the inactive wet seal areas (104a, 106a, 110a, 112a) of the fuel cell to be directed away from the inactive wet seal areas (104a, 106a, 110a, 112a) of the fuel cell and toward the active areas (108, 114) of the fuel cell, wherein said plate structure is adapted to be used in adjacent first and second fuel cells and includes: a bipolar plate having opposing anode and cathode surfaces (102a, 102b) bordered by first and second opposing edges (103a, 105a) of the bipolar plate and third and fourth opposing edges (103b, 105b) transverse to said first and second opposing edges (103a, 105a) of the bipolar plate; first and second pocket areas (104, 106) situated on said anode surface of said bipolar plate at said first and second opposing edges (103a, 105a) of said bipolar plate, respectively; and third and fourth pocket areas (110, 112) situated on said cathode surface of said bipolar plate at said third and fourth opposing edges (103b, 105b) of said bipolar plate, respectively; a bipolar plate having opposing anode and cathode surfaces (102a, 102b) bordered by first and second opposing edges (103a, 105a) of the bipolar plate and third and fourth opposing edges (103b, 105b) transverse to said first and second opposing edges (103a, 105a) of the bipolar plate; first and second pocket areas (104, 106) situated on said anode surface of said bipolar plate at said first and second opposing edges (103a, 105a) of said bipolar plate, respectively; and third and fourth pocket areas (110, 112) situated on said cathode surface of said bipolar plate at said third and fourth opposing edges (103b, 105b) of said bipolar plate, respectively; wherein said first and second pocket areas (104, 106) and said third and fourth pocket areas (110, 112) of said bipolar plate are inactive wet seal areas (104a, 106a, 110a, 112a) of said first and second fuel cells, respectively, when said plate structure is used in said first and second fuel cells; wherein said anode surface of said bipolar plate between said first and second pocket areas (104, 106) of said bipolar plate and said cathode surface of said bipolar plate between said third and fourth pocket areas (110, 112) of said bipolar plate are active areas of a said first and second fuel cells, respectively, when said plate structure is used in said first and second fuel cells; and wherein said one or more baffles (120, 122, 124, 126, 128, 130) are situated in one or more of said first, second, third and fourth pocket areas (104, 106, 110, 112).