Fuel cell

A fuel cell comprising:

• an electrolyte membrane;
• a cathode positioned on a first surface of the electrolyte membrane;
• an anode positioned on a second surface of the electrolyte membrane;
• a cathode-side sealant positioned on a surface of the cathode different from an electrolyte membrane side of the cathode;
• an anode-side sealant positioned on a surface of the anode different from an electrolyte membrane side of the anode;
• a cathode-side separator positioned on a surface of the cathode-side sealant different from a cathode side of the cathode-side sealant;
• and
• an anode-side separator positioned on a surface of the anode-side sealant different from an anode side of the anode-side sealant,
• the anode-side separator having a projection on a surface of the anode-side separator stacked on the anode-side sealant, or the cathode-side separator having a projection on a surface of the cathode-side separator stacked on the cathode-side sealant,
• wherein the cathode-side sealant or the anode-side sealant contains a first fiber bundle in which a plurality of parallel fibers are assembled into one bundle, a second fiber bundle in which a plurality of parallel fibers are assembled into one bundle, and a resin,
• wherein the parallel fibers of the first fiber bundle extend in a first direction, the parallel fibers of the second fiber bundle extend in a second direction different from the first direction, and
• wherein all of the parallel fibers of the first fiber bundle are pressed by the projection such that a width of the first fiber bundle is wider than a width of the projection.