| CPC H01M 8/0258 (2013.01) [H01M 8/1004 (2013.01); H01M 8/2483 (2016.02)] | 20 Claims |
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1. A separator for a fuel cell, the separator comprising:
a main body having an inlet manifold for inflow of a reactant gas, an outlet manifold for outflow of the reactant gas, and a flow area between the inlet manifold and the outlet manifold where the reactant gas is configured to flow; and
a resistance part provided in the flow area of the main body adjacent to the inlet manifold of the main body, the resistance part being configured to increase flow resistance to the reactant gas introduced from the inlet manifold and flowing toward the outlet manifold;
wherein the flow area includes:
a reaction area having a reactant gas guide channel disposed therein, wherein the reactant gas guide channel is configured to guide the reactant gas to electrodes of a membrane electrode assembly; and
a diffusion area located between the reaction area and the inlet manifold and having a plurality of diffusion channels disposed therein, wherein;
the plurality of diffusion channels are configured to allow the reactant gas to flow in different flow passages in order to diffuse the reactant gas introduced from the inlet manifold toward the reaction area,
the plurality of diffusion channels are formed between lands of the diffusion area,
the resistance part is filled in the plurality of diffusion channels in the diffusion area in order to increase the flow resistance to the reactant gas passing through the plurality of diffusion channels, and
the different flow passages each form a separate oblique path between the reaction area and the inlet manifold.
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