| 摘要 |
<p>The invention is a bi-zone water transport plate (12, 14) for a fuel cell (10) wherein the plate includes a water permeability zone (54) and a bubble barrier zone (52). The bubble barrier zone extends between all reactive perimeters of the plate, has a pore size of less than 20 microns, and has a thickness of less than 25 per cent of a shortest distance between opposed contact surfaces (48, 50) of the plate. The water permeability zone has a pore size of at least 100 per cent greater than the pore size of the bubble barrier zone, and has a thickness of greater than 75 per cent of the shortest distance between the opposed contact surfaces of the plate. By having a separate bubble barrier zone, the plate affords enhanced water permeability while the bubble barrier maintains a gas seal.</p> |
