In order to provide a bipolar plate that has optimized electrical conductivity and can be produced as easily as possible, the invention proposes that the bipolar plate comprises an electrically conductive main body and an electrically conductive coating, wherein the electrically conductive coating comprises a binding material and one or more electrically conductive fillers, and wherein a pigment volume concentration in the coating corresponds at least to a pigment volume concentration required to achieve a percolation threshold.

The present invention relates to the field of fuel cell stacks and stack tower or module, in particular to a sealing structure for stack tower and a stack tower. The sealing structure comprises a first component, a second component and a mica spacer, the first component and the second component are opposite to each other, the mica spacer is disposed between the first component and the second component, sealing part is arranged between the mica spacer and at least one of the first component and the second component, and the sealing part comprises a glass ceramic layer and an outer circumferential ceramic cement ring surrounding the glass cement layer; the sealing structure for stack tower has excellent sealing performance and service durability for a fuel cell system.

To provide a conductive member and a cell stack, where a concave groove of a conductive base substrate can be covered with a cover layer, as well as an electrochemical module and an electrochemical device.

An electrochemical device may be formed by assembly by stacking preassembled modules, each of these modules being produced as a usual stack of electrochemical cells. The manufacture of preassembled modules can make it possible to produce electrochemical devices with a large number of electrochemical cells, without the bracing problems present and excessive crushing courses that are encountered in the cell stacks according to the prior art, i.e., in a single block.

A fuel cell manufacturing method capable of easily forming an interconnector part electrically connecting adjacent unit cells in a planar array fuel cell is provided. The interconnector part (30) is formed through a local heating process of carbonizing a proton conductive resin by locally heating an electrolyte membrane (12). The local heating process includes: a first heating step of heating a part of the electrolyte membrane (12) to a temperature equal to or less than a first temperature at a first temperature increase rate or less; and a second heating step of heating the part of the electrolyte membrane (12) to a temperature equal to or greater than a second temperature higher than the first temperature at a temperature increase rate greater than the first temperature increase rate, after the first heating step.

A solid electrolytic fuel battery having a battery structure part that includes a plurality of cells each composed of fuel electrode layers, a solid electrolytic layer, and air electrode layers. A cell separation part is arranged between the plurality of cells, and formed of a material containing ceramics. A gas supply path structure part has fuel gas supply paths to supply a fuel gas to each cell, and an air supply path to supply air to each cell. The air supply path is arranged in an inside of the battery structure part.

A solid electrolytic fuel battery having a battery structure part that includes a plurality of cells each composed of fuel electrode layers, a solid electrolytic layer, and air electrode layers. A cell separation part is arranged between the plurality of cells, and formed of a material containing ceramics. A gas supply path structure part has fuel gas supply paths to supply a fuel gas to each cell, and an air supply path to supply air to each cell. The air supply path is arranged in an inside of the battery structure part.

Provided is a metallic material including: a base metal made of a metal; a metal compound layer stacked on a surface of the base metal, the metal compound layer mainly containing a compound of at least one transition metal in the fourth period and oxygen; a platinum group portion dispersed on a surface of the metal compound layer, the platinum group portion mainly containing at least one platinum group element; and a platinum group compound coating film which covers the platinum group portion, the platinum group compound coating film mainly containing a compound of at least one platinum group element and oxygen. The at least one platinum group element contained in the platinum group portion is preferably one or more of Ru, Rh, Os, and Ir.

Provided is a metallic material including: a base metal made of a metal; a metal compound layer stacked on a surface of the base metal, the metal compound layer mainly containing a compound of at least one transition metal in the fourth period and oxygen; a platinum group portion dispersed on a surface of the metal compound layer, the platinum group portion mainly containing at least one platinum group element; and a platinum group compound coating film which covers the platinum group portion, the platinum group compound coating film mainly containing a compound of at least one platinum group element and oxygen. The at least one platinum group element contained in the platinum group portion is preferably one or more of Ru, Rh, Os, and Ir.

A ceramic substrate for an electrochemical element that includes a ceramic layer and a high-thermal-expansion-coefficient material layer that is laminated on the surface of the ceramic layer. The high-thermal-expansion-coefficient material layer has a higher coefficient of thermal expansion than the ceramic layer, and applies compressive stress to the ceramic layer.