A clad porous metal substrate for use in a metal-supported electrochemical cell, wherein a metal support layer of defined porosity is clad on top and bottom sides with a layer containing a metal and/or a metal oxide. A metal-supported electrochemical half-cell and a metal-supported electrochemical cell are also described.

A clad porous metal substrate for use in a metal-supported electrochemical cell, wherein a metal support layer of defined porosity is clad on top and bottom sides with a layer containing a metal and/or a metal oxide. A metal-supported electrochemical half-cell and a metal-supported electrochemical cell are also described.

A cell includes an element portion including a first electrode layer, a solid electrolyte layer that contains Zr and that is located above the first electrode layer, an intermediate layer that contains CeO.sub.2 containing a rare earth element other than Ce and that is located above the solid electrolyte layer, and a second electrode layer located above the intermediate layer. The intermediate layer includes a first intermediate layer and a second intermediate layer that contains Zr and Ce and that is located at at least a portion between the first intermediate layer and the solid electrolyte layer. In a plan view from the second electrode layer, the second intermediate layer located at an outer peripheral portion of the intermediate layer includes a portion with a thickness greater than the second intermediate layer overlapping a center of the second electrode layer. A cell stack device, a module, and a module housing device include a plurality of the cells.

A stack of rectangular, planar electrochemical cell units (200), each cell unit (200) comprising at least one first fluid mid-port (230, 235) that is disposed midway along its length within or between one or more active cell chemistry regions (210) and is in fluid communication with a first fluid volume of the cell unit (200). The first fluid mid-ports (230, 235) of the respective cell units (200) align to form at least one first fluid mid-passageway extending in the stack direction. The stack is configured such that, in each first fluid volume, first fluid flow paths (405, 410) extend across the one or more active cell chemistry regions (210) between the at least one first fluid mid-port (230, 235) and each respective opposed cell end.

A stack of rectangular, planar electrochemical cell units (200), each cell unit (200) comprising at least one first fluid mid-port (230, 235) that is disposed midway along its length within or between one or more active cell chemistry regions (210) and is in fluid communication with a first fluid volume of the cell unit (200). The first fluid mid-ports (230, 235) of the respective cell units (200) align to form at least one first fluid mid-passageway extending in the stack direction. The stack is configured such that, in each first fluid volume, first fluid flow paths (405, 410) extend across the one or more active cell chemistry regions (210) between the at least one first fluid mid-port (230, 235) and each respective opposed cell end.

An object of the present invention is to provide a fuel cell that maintains electric generation efficiency of the fuel cell and that has high reliability in which an electrolyte film is not easily damaged. The fuel cell according to the present invention includes a stress adjusting layer covering an opening above a support substrate, and the stress adjusting layer has tensile stress with respect to the support substrate and has a columnar crystal structure in which a grain boundary extends along a direction parallel to a film thickness direction (see FIG. 2).

An object of the present invention is to provide a fuel cell that maintains electric generation efficiency of the fuel cell and that has high reliability in which an electrolyte film is not easily damaged. The fuel cell according to the present invention includes a stress adjusting layer covering an opening above a support substrate, and the stress adjusting layer has tensile stress with respect to the support substrate and has a columnar crystal structure in which a grain boundary extends along a direction parallel to a film thickness direction (see FIG. 2).

A fuel cell stack includes stacked solid oxide fuel cells, interconnects disposed between the fuel cells, and dielectric layers disposed on the interconnects and including a first glass-containing component and a corrosion barrier material. Optionally, the dielectric layers may cover only a portion of the interconnect riser seal surfaces which are covered by riser seals. Additionally or alternatively, the fuel cell stack may include an electrolyte reinforcement layer on the electrolyte of the solid oxide fuel cells.

A fuel cell stack includes stacked solid oxide fuel cells, interconnects disposed between the fuel cells, and dielectric layers disposed on the interconnects and including a first glass-containing component and a corrosion barrier material. Optionally, the dielectric layers may cover only a portion of the interconnect riser seal surfaces which are covered by riser seals. Additionally or alternatively, the fuel cell stack may include an electrolyte reinforcement layer on the electrolyte of the solid oxide fuel cells.

An object of the present invention is to provide a fuel battery cell of a high power generation output by increasing an area of an effective power generation region contributing to power generation while ensuring mechanical strength of the fuel battery cell. The fuel battery cell according to the present invention is provided with a first and a second insulating films between a support substrate and a first electrode. The support substrate has a first opening, the first insulating film has a second opening, and the second insulating film has a third opening. An opening area of the first opening is larger than that of the second opening, and an opening area of the third opening is larger than that of the second opening (see FIG. 2).