| 摘要 |
A fuel cell separator of the present invention is a plate-shaped fuel cell separator including a reaction gas supply manifold hole (21), a reactant gas discharge manifold hole (22), a groove-shaped first reactant gas channel (131), and one or more groove-shaped second reaction gas channels (132, 133), wherein the first reactant gas channel (131) includes a first portion (41) and a second portion (51) located upstream of the first portion (41), and a cross-sectional area of a continuous portion extending from the upstream end of the first reactant gas channel (131) and/or a cross-sectional area of at least a portion of the first reactant gas channel (131) which lies downstream of the first portion (41) is/are smaller than cross-sectional areas of the second reactant gas channels (132, 133).
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