A metal frame for sealing a solid oxide fuel cell. The metal frame comprises both a metal top frame positioned on top of a middle frame and a metal bottom frame that is positioned below a middle frame.

A joint separator is formed by joining a first metal separator and a second metal separator together in the state where the first metal separator and the second metal separator are stacked together. A first metal bead of the first metal separator and a second metal bead of the second metal separator have the same bead width. The ratio of the bead width to the bead height is set to be within the range of not less than 2.25 and not more than 3.35, where the bead height is a distance between a protruding end of the first metal bead and a protruding end of the second metal bead.

In a manufacturing method for fuel cell separators having a seal part of convex shape that is pushed when superimposed with another separator, the method includes: a first pressing step of imparting work hardening to an entire region to become a convex shape configuring the seal part; and a second pressing step of press molding the region work hardened in the first pressing step so as to become a convex shape.

Implementation of an interconnector structure for an SOEC or SOFC electrochemical device, the interconnector being formed of a conductive support element having a first face with a rough region, the roughness of which has been modified locally before being brought into contact with a seal.

Implementation of an interconnector structure for an SOEC or SOFC electrochemical device, the interconnector being formed of a conductive support element having a first face with a rough region, the roughness of which has been modified locally before being brought into contact with a seal.

The invention related to metal-supported solid oxide fuel cells (SOFC), fuel cell stacks containing the same, methods of their manufacture and use thereof. The SOFC of the invention utilizes an extended electrolyte and barrier layers to prevent specific types of corrosion of the metal substrate. This new coating approach reduces the rate of degradation of the fuel cells and improves system reliability when operated over long durations.

The invention related to metal-supported solid oxide fuel cells (SOFC), fuel cell stacks containing the same, methods of their manufacture and use thereof. The SOFC of the invention utilizes an extended electrolyte and barrier layers to prevent specific types of corrosion of the metal substrate. This new coating approach reduces the rate of degradation of the fuel cells and improves system reliability when operated over long durations.

The present invention relates to compositions in the form of precursor glass powders, pastes and preforms comprising said precursor glass powders, and glass-ceramics produced from the precursor glass powders, pastes or preforms.

The present invention also relates to a method of forming a seal between a first and second material with a glass-ceramic, and a joint comprising a first material, a second material and a glass-ceramic sealing material joining the first and second materials together.

The present invention relates to compositions in the form of precursor glass powders, pastes and preforms comprising said precursor glass powders, and glass-ceramics produced from the precursor glass powders, pastes or preforms.

The present invention also relates to a method of forming a seal between a first and second material with a glass-ceramic, and a joint comprising a first material, a second material and a glass-ceramic sealing material joining the first and second materials together.

An electrochemical reaction unit including a unit cell including an electrolyte layer, and a cathode and an anode that face each other in a first direction with the electrolyte layer intervening therebetween; and a felt member containing a ceramic material or a metal and a silica component. The felt member includes both a first crystal structure and a second crystal structure, which is an SiO.sub.2 crystal structure. Also disclosed is an electrochemical reaction cell stack including a plurality of electrochemical reaction units disposed in the first direction, at least one of the electrochemical reaction units being the above-described unit. Yet further disclosed is a method for producing the electrochemical reaction unit.