Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Hiroshi Tsukuda

Nagao Hisatome

Toru Houjyou

Yoshiharu Watanabe

Yasuhiko Tsuru

Toshiro Nishi

Kenichi Hiwatashi

Shin Yoshida

Kenichiro Kosaka

Tohru Houjyou

Akihiro Yamashita

Mineaki Matsumoto

Norihisa Matake

Shigenori Koga

A fuel cell stackincludes a plurality of fuel cellsin which a fuel electrode, a solid oxide electrolyte, and an air electrodeare sequentially laminated, an interconnectorthat electrically connects the fuel cellswhich are adjacent to each other, and an interconnector connecting layerthat is interposed directly between the air electrodeand the interconnector. The interconnector connecting layeris formed from a material, which is expressed by a composition formula of (LaSrCa)MnO-AppmSiO-DppmMgO (provided that, 0&#x3c;x&#x2264;0.4, 0&#x3c;y&#x2264;0.4, 0.1&#x2264;x+y&#x2264;0.5, 0.95&#x2264;z&#x3c;1, A: 10 to 300, D: 10 to 400), through firing.

Fuel cell stack including a plurality of fuel cells and method of manufacturing the same

A method is provided for manufacturing a solid oxide fuel cell having excellent power generation performance and thermal cycle resistance and a solid oxide fuel cell. A method for manufacturing a solid oxide fuel cell includes a first step STof sequentially forming a fuel electrode and a solid oxide electrolyte layer on a substrate; a second step STof forming an air electrode intermediate layer on the solid oxide electrolyte layer; and a third step STof forming, on the air electrode intermediate layer, an air electrode conductive layer using a mixture obtained by mixing first particles in a first average particle size range in which the average particle size (d50) is in a range of 27.0 &#x3bc;m to 31.0 &#x3bc;m and second particles in a second average particle size range having an average particle size (d50) smaller than the first average particle size range.

Method for manufacturing solid oxide fuel cell and solid oxide fuel cell

An interconnector material having a high degree of densification, a unit cell for a solid oxide fuel cell that has a high degree of gas tightness at the contact interface between the electrolyte and the interconnector, and a solid oxide fuel cell having superior reliability are provided in an inexpensive manner. A material for a solid oxide fuel cell interconnector, comprising (SrE)TiO(wherein x satisfies 0.01&#x2266;x&#x2266;0.5, and E represents one or more elements selected from the group consisting of La, Pr, Nd, Sm and Gd) and AlO, wherein the AlOcontent relative to the (SrE)TiOis not less than 2 mol % and not more than 10 mol %.

Material for solid oxide fuel cell interconnector, unit cell for solid oxide fuel cell, and solid oxide fuel cell

A sealing structure of a cell tube for a tubular type fuel cell has a sealed portion composed of a conductive lead film formed on a surface of a substrate tube, and an airtight film with high airtight properties formed on a surface of the lead film. The sealing structure also has an adhesion enhancing film provided on a surface of the airtight film, and a sealing member adhered to a surface of the adhesion enhancing film via an inorganic adhesive coated on the surface of the adhesion enhancing film. Thus, the sealability of the cell tube is increased, and the electrical characteristics of the fuel cell are improved.

Sealing structure of cell tube

A full cell comprising a fuel electrode and an air electrode disposed on side surfaces of an electrolyte film is disclosed. The fuel electrode is supplied with a fuel gas, and the air electrode is supplied with air. The air electrode has a close-packed structure in which the ratio between the average particle size of coarse particles and the average particular size of fine particles is from 5/1 to 250/1. The resulting fuel cell is increased in conductivity.

Fuel cell having an air electrode with decreased shrinkage and increased conductivity

A material for a base tube of a fuel battery, comprising a mixture of at least two components selected from the group consisting CaO, ZrO , NiO, MgO, SrO, Al2O3, TiO2, and BaO. Such material suppresses cracks of an electrolyte and also suppress leakage after rapid temperature increase and decrease, thus providing a reliable fuel battery.

Base material for a fuel battery

The present invention discloses a base tube for a fuel cell produced by forming a film of a fuel electrode and a film of an air electrode on a surface of the base tube, the base tube comprising a mixture of a raw material for the base tube, and coarse particles, whereby the mixture shrinks nonuniformly when sintered to increase the porosity of the base tube. Thus, the gas permeability and the cell electrical efficiency can be increased.

Base tube for fuel cell and material for base tube

The present invention discloses a base tube for a fuel cell produced by forming a film of a fuel electrode and a film of an air electrode on a surface of the base tube, the base tube comprising a mixture of a raw material for the base tube, and coarse particles of metal oxide, whereby the mixture shrinks nonuniformly when sintered to increase the porosity of the base tube. Thus, the gas permeability and the cell electrical efficiency can be increased.

Base tube for fuel cell

A material for a base tube of a fuel battery, comprising a mixture of at least two components selected from the group consisting CaO , ZrO,, NiO, MgO, SrO, Al2O3, TiO2, and BaO. Such material suppresses cracks of an electrolyte and also suppress leakage after rapid temperature increase and decrease, thus providing a reliable fuel battery.

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Nagasaki, Japan

Hiroshi Tsukuda