Patent ID: 8017274

Claim:
A fuel cell comprising: an electrolyte layer; a first electrode provided on one surface of the electrolyte layer; and a second electrode provided on the other surface of the electrolyte layer, wherein a reaction fluid to be supplied to the first electrode contains carbon monoxide or carbon monoxide is generated from a reaction fluid having been supplied to the first electrode, and wherein the first electrode comprises: a first catalyst material which has a function of extracting an electron from the reaction fluid; a first support which is carbon-based and supports the first catalyst material; a second catalyst material which has a function of reducing activation energy for conversion of the carbon monoxide to carbon dioxide; a second support which supports the second catalyst material and is a material selected from the group consisting of magnesium (Mg), aluminum (Al), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), molybdenum (Mo), ruthenium (Ru), rhodium (Rh), palladium (Pd), tin (Sn), tungsten (W), iridium (Ir), and a substance obtained by converting part or all of the materials in the group to a solid solution alloy or carbide; and an oxygen-supplying material which is supported by the first support and supplies oxygen, wherein the second support is in contact with the first support.