Kyocera Corporation

Makoto Koi

Kazunari Sugihara

Tetsuro Fujimoto

Masahiko Higashi

Akihiro Hara

Hiroaki Seno

Fumito Furuuchi

Tetsuaki Ozaki

Kazuya Imanaka

A cell according to the present disclosure includes: a first electrode layer; a solid electrolyte layer on the first electrode layer, the solid electrolyte layer containing Zr; a middle layer on the solid electrolyte layer, the middle layer containing CeOwhich contains Ce and a rare earth element other than Ce; a second electrode layer on the middle layer; and a boundary region between the solid electrolyte layer and the middle layer, the boundary region including a basing point at which a molarity of Ce and a molarity of Zr are equal. An average molarity of the Ce within a range from the basing point up to 3 μm toward the solid electrolyte layer is equal to or less than 10 mol % with respect to a total of Ce, Zr, and other rare earth elements, an average molarity of Zr within the range is equal to or more than 70 mol % with respect to a total of Ce, Zr, and other rare earth elements, or a molarity ratio of Ce with respect to Zr within the range is equal to or less than 0.143.

Cell, cell stack device, module, and module housing device

A cell stack device may include a cell stack comprising a plurality of cells, a manifold configured to supply a reaction gas to the plurality of cells, and a reaction gas supply pipe connected to the manifold. The manifold may include an insertion portion configured to connect the reaction gas supply pipe to the manifold and a first joining portion configured to join the insertion portion and the reaction gas supply pipe. A module may include the cell stack device contained in a housing container. A module housing device may include the module, an auxiliary device configured to operate the module, and an external casing configured to contain the module and the auxiliary device therein.

Cell stack device, module, and module housing device

A cell stack in which a plurality of cells may have a cylindrical shape and may include gas flow passages may be arranged uprightly and may be electrically connected may include: a manifold configured to fix lower ends of the plurality of cells and supply gas to the gas flow passages of the plurality of cells, and a gas supply pipe configured to supply the gas to the manifold. The gas supply pipe may include one end connected to a gas supply portion and another end inserted into a first through hole provided in the manifold, and may be joined to the manifold via a first joining portion. The gas supply pipe may include a first protruding portion protruding toward an inner side of the gas supply pipe and located at a position corresponding to the first joining portion in any cross-section along an insertion direction of the gas supply pipe.

A cell stack device may include a cell stack of connected cells, a manifold configured to fix lower ends of the cells and supply a reaction gas into gas flow passages of the cells, and a reaction gas supply pipe connected to the manifold and configured to supply the reaction gas to the manifold. The manifold may include an insertion portion connecting the reaction gas supply pipe to the manifold, and a gap between the insertion portion and the reaction gas supply pipe. The manifold may further include a first joining portion joining the insertion portion and the reaction gas supply pipe and configured to seal an end of the gap. In a cross-section along an insertion direction of the reaction gas supply pipe, the first joining portion may have a meniscus shape, and a joint length is longer than a thickness of the reaction gas supply pipe.

A cell stack device including: a cell stack comprising a plurality of cells; a support member; and a fixing part between the support member and the at least one cell of the plurality of cells, wherein in a cross section including the support member, the fixing part, and the at least one cell, the fixing part includes: a first region arranged close to the support member; a second region closer to the at least one cell than the first region; and a third region between the first region and the second region, and at least one of the first region and the second region includes a porous region having a porosity that is higher than a porosity of the third region.

A cell may include a columnar support having a first main face and a second main face; and an element comprising a first electrode layer, a solid electrolyte layer, and a second electrode layer laminated in sequence on the first main face of the support. The porosity of at least one of the two end portions of the support in the longitudinal direction L may be lower than that of the central portion of the support in the longitudinal direction L.

Cell, cell stack device, module and module containing device

The cell according to the present disclosure has a support body having a length direction and a pair of main surfaces, and an element part in which a first electrode, a solid electrolyte layer having an oxide containing a rare earth element oxide as a main component, and a second electrode are stacked, in that order, on one of the main surfaces of the support body. The cell also has a first layer provided on the other main surface of one end part of the support body in the length direction, which layer contains a different amount of a rare earth element oxide that is the same oxide as the main component of the solid electrolyte layer, and is stronger than the solid electrolyte layer. A second layer is provided between the first layer and the support body, and the second layer has a higher content of a component that is the same as the component contained in the support body than the first layer, and also contains the same component as the first layer.

Cell, cell stack device, module and module housing device

The cell of the present invention includes an element portion and a first layer. The element portion includes a first electrode layer, a second electrode layer and a solid electrolyte layer. The first electrode layer serves as a tubular support body. The solid electrolyte layer is located between the first electrode layer and the second electrode layer. The solid electrolyte layer contains an oxide as a primary component and a first content of a rare earth element. The solid electrolyte layer has a thickness of 30 &#x3bc;m or less. The solid electrolyte layer has a region devoid of the second electrode layer. The first layer is located in the region. The first layer contains the oxide as a primary component and a second content of the rare earth element. The second content is different from the first content. The first layer has a higher strength than the solid electrolyte layer.

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Kirishima, Japan

Makoto Koi