| 摘要 |
PROBLEM TO BE SOLVED: To compatibly secure current collecting performance, gas diffusing performance and draining performance, in a separator for a fuel cell. SOLUTION: Linear parts 511 defined by rectangular projecting parts 42, 43 longitudinally lining up in tandem are provided in a passage groove 51, and the projecting parts 42, 43 are disposed so that the tandem of the projecting parts 42, 43 on one side rim of each linear part 511 and the projecting parts 42, 43 on the other are offset in the tandem direction of the projecting parts 42, 43. Thereby, an action caused by the discontinuous parts 42a of the projecting parts 42, 43 while disturbing gas flow and hampering formation of laminar flow is controlled so as not to repeatedly work on the same position of the linear part 511 of the passage groove, and the number of the discontinuous parts 42a of the projecting parts can be reduced without harming an action to enhance gas diffusing performance by expediting the flow velocity on an electrode surface. Thereby, current collecting performance is secured. |
