A bipolar plate for a PEM fuel cell is disclosed. The plate includes a
plurality of channels, wherein the ends of the channels are staggered.
The plate also includes a plurality of tunnels, wherein the ends of the
tunnels are staggered. The plate further includes a cathode and an anode,
wherein a portion of the cathode overhangs a portion of the anode. These
staggered/offset features allow for an increase the capillary meniscus of
water droplets passing therethrough, allowing for a reduction in the
pressure required to move the water through the cell and out to the
header volume of the stack.