Abstract:
Provided is a solid oxide fuel cell unit comprising an insulating support, and a power generation element comprising, at least, a fuel electrode, an electrolyte and an air electrode, which are sequentially laminated one another, the power generation element being provided on the insulating support, wherein an exposed insulating support portion, an exposed fuel electrode portion, and an exposed electrolyte portion are provided in an fuel electrode cell end portion.
Abstract:
Disclosed is a solid oxide fuel cell which includes an inner electrode, a solid electrolyte, and an outer electrode, each being sequentially laminated on the surface of a porous support. The porous support contains forsterite, and further has a strontium element concentration of 0.02 mass % to 1 mass % both inclusive in terms of SrO based on the mass of the forsterite.
Abstract:
Provided is a solid oxide fuel cell which includes a fuel electrode, a solid electrolyte, and an air electrode, each being sequentially laminated on the surface of a porous support. The porous support comprises forsterite and a nickel element. Ni and/or NiO fine particles are exposed on a surface of a sintered compact of the forsterite constituting the porous support.
Abstract:
A solid oxide fuel cell array has pairs of a first connection member and a second connection member. Each pair electrically connects two adjacent first and second fuel cells to electrically connect the plurality of fuel cells in series. The second fuel cell has the first connection member connected to the outer side electrode layer of the second fuel cell at a distance D1 measured from the upper terminal end of the outer side electrode layer of the second fuel cell and has the second connection member connected to the outside side electrode layer of the second fuel cell at a distance D2 measured from the lower terminal end of the outer side electrode of the second fuel cell. The distance D2 is longer than the distance D1.
Abstract:
A fuel cell system includes: a reformer to generate reformed gas; a solid-oxide fuel cell to generate electric power; a fuel collecting portion provided adjacent to the solid-oxide fuel cell, the reformed gas remaining after the reaction of the solid-oxide fuel cell being collected at the fuel collecting portion; an air flow-through portion; a combustor to mix the reformed gas discharged from a fuel jetting opening of the fuel collecting portion with the air flowing through the air flow-through portion, to combust the reformed gas and operative to mix the reformed gas discharged from a fuel jetting opening of the fuel collecting portion with the air flowing through the air flow-through portion, to combust the reformed gas; and a covering body provided so as to block flow of the air in a direction from the air flow-through portion toward the combustor along the reformer.
Abstract:
To provide a solid oxide fuel cell with improved durability while obtaining sufficient electricity generating performance. The present invention is a method for manufacturing solid oxide fuel cells (16) in which electricity generating elements (16a) are connected by an interconnector (102), including: a support body forming step (S1); surface deposition steps (S4, S9) for forming in sequence a first and second functional layer on a porous support body; an outermost layer deposition step (S13) for forming an outermost functional layer (101) in which slurry in liquid droplet form is continuously jetted to form dots, and an outermost functional layer is formed by the agglomeration of dots to be thicker than a first functional layer (98); and a sintering step (S14) for sintering functional layers; wherein in the outermost functional layer, traces of agglomerated dots remain and ring-shaped cracks surrounding each dot trace are formed by the sintering process.
Abstract:
A solid oxide fuel cell stack includes a support, a plurality of power generation elements provided on a surface of the support, the plurality of power generation elements connected in series, each including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order, and an interconnector that electrically connects an air electrode in one of adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte in adjacent one power generation element is provided between a fuel electrode in the adjacent one power generation element and the fuel electrode in the adjacent other power generation element, and an insulating member is provided at a position that is on the solid electrolyte in the adjacent one power generation element and between the air electrode in the adjacent one power generation element and the solid electrolyte therein.
Abstract:
An object of the present invention is to provide a fuel cell preventing formation of a diffusion layer containing Ca and other elements, and having an excellent power generation performance at low temperature by preventing breakdown of a crystal structure of an electrolyte by firing. Disclosed is a solid oxide fuel cell which includes an inner electrode, a solid electrolyte, and an outer electrode, each being sequentially laminated on the surface of a porous support. The porous support contains forsterite, and has a Mg/Si molar ratio of 1.90 to 2.2 both inclusive, and an A-to-B ratio (A/B) of 0.0% to 9.0% both inclusive, where A denotes a maximum peak height which appears at a diffraction angle 2θ=26.5° to 27.0° and B denotes a maximum peak height which appears at 36.5° to 37.0° in a powder X-ray diffraction pattern obtained by using Cu—Kα radiation.
Abstract:
An object of the present invention is to provide a fuel cell preventing formation of a diffusion layer containing Ca and other elements, and having an excellent power generation performance at low temperature by preventing breakdown of a crystal structure of an electrolyte by firing. Disclosed is a solid oxide fuel cell which includes a fuel electrode, a solid electrolyte, and an air electrode, each being sequentially laminated on the surface of a porous support. The porous support contains forsterite, and further has a calcium element (Ca) content of more than 0.2 mass % but not more than 2 mass % in terms of CaO.
Abstract:
The solid oxide fuel cell apparatus of the present invention comprises: multiple fuel cells mutually electrically connected to each other; an outside cylindrical member for housing the multiple fuel cells; an oxidant gas supply flow path for supplying oxidant gas to the fuel cells; a fuel gas supply flow path for supplying fuel gas to the fuel cells; a reforming portion for producing fuel gas by reforming raw fuel gas using steam; an evaporating portion for producing steam supplied to the reforming portion; and a fuel gas supply pipe for supplying water evaporated by the evaporating portion; wherein the evaporating portion comprises a sloped plate for dispersing water supplied from the fuel gas supply pipe over the entire evaporating portion using capillary action.