Abstract: A cell for a fuel cell, comprising a membrane electrode assembly, expanded moldings that are laminated to both surfaces of the membrane electrode assembly and form gas channels, and separators that are laminated to the gas channel structures and separate the gases between adjacent cells, wherein each of the expanded moldings comprises a gas channel substrate formed from a metal material such as a titanium material or a stainless steel, a conductive layer that is formed from a conductor such as gold on a contact portion of the gas channel substrate that contacts the membrane electrode assembly or the separator, and a hydrophilic layer that is formed from a hydrophilic material such as a titanium oxide on the gas channel surface of the gas channel substrate.

Abstract: A fuel system including a fuel cell including a plurality of unit cells supplied with a prescribed gas to generate electricity, a stoichiometric ratio calculating apparatus calculating the stoichiometric ratio of the prescribed gas for each unit cell, and a gas flow increasing apparatus increasing the supply of the prescribed gas when the stoichiometric ratio falls below a prescribed value.

Abstract: A cell for a fuel cell, comprising a membrane electrode assembly, expanded moldings that are laminated to both surfaces of the membrane electrode assembly and form gas channels, and separators that are laminated to the gas channel structures and separate the gases between adjacent cells, wherein each of the expanded moldings comprises a gas channel substrate formed from a metal material such as a titanium material or a stainless steel, a conductive layer that is formed from a conductor such as gold on a contact portion of the gas channel substrate that contacts the membrane electrode assembly or the separator, and a hydrophilic layer that is formed from a hydrophilic material such as a titanium oxide on the gas channel surface of the gas channel substrate.

Abstract: A fuel cell in which stress that is caused in an electrolyte membrane is relaxed or absorbed is provided. The fuel cell includes A fuel cell includes an electrolyte membrane; a holding member that is used to hold the electrolyte membrane; and an elastic member that is arranged between the electrolyte membrane and the holding member so that the holding member holds the electrolyte membrane.

Abstract: A fuel system including a fuel cell including a plurality of unit cells supplied with a prescribed gas to generate electricity, a stoichiometric ratio calculating apparatus calculating the stoichiometric ratio of the prescribed gas for each unit cell, and a gas flow increasing apparatus increasing the supply of the prescribed gas when the stoichiometric ratio falls below a prescribed value.