Patent ID: 8192887

Claim:
A fuel cell, comprising: unit cells each having an anode and a cathode joined together via an electrolyte membrane; a cell stack having a plurality of stacked cells, each of the cells having one of the unit cells and a separator provided with an anode fluid channel; and a manifold for supplying an anode fluid to a position of each cell which faces the anode fluid channel, the manifold comprising: a top plate provided with at least one introduction port through which the anode fluid is introduced; a bottom plate provided with a plurality of fine openings facing the anode fluid channels, a flow-through space for the anode fluid being formed between an inner surface of the top plate and an upper surface of the bottom plate, the introduction port projecting onto a projection part on the upper surface of the bottom plate positioned in the flow-through space on one side of the fine openings so that when the anode fluid is introduced into the introduction port the anode fluid is brought into contact with the projection part; and a block group arranged on the upper surface of the bottom plate between the fine openings and the projection part on the upper surface of the bottom plate, the block group comprising a plurality of individual blocks spaced apart from one another to form a plurality of individual channels for dispersing into the fine openings the anode fluid; wherein when the anode fluid is introduced into the introduction port and brought into contact with the projection part on the upper surface of the bottom plate, the flow rate of the anode fluid is lowered and the anode fluid flows at the lowered flow rate through the individual channels formed by the blocks and is dispersed into the fine openings.