A Solid Oxide Cell stack has an integrated interconnect and spacer, which is formed by bending a surplus part of the plate interconnect 180° to form a spacer part on top of the interconnect and connected to the interconnect at least by the bend.

A metal pole plate sealing structure for a fuel cell is disclosed, as well as a fuel cell using this structure. The metal pole plate sealing structure for a fuel cell includes a metal pole plate, a membrane electrode assembly and a sealing rubber body. The metal pole plate has a sealing rubber groove. The sealing rubber body is accommodated in the sealing rubber groove. The sealing rubber groove, the sealing rubber body and a frame of the membrane electrode assembly cooperate with each other to seal an internal space enclosed when the metal pole plate and the membrane electrode assembly are pressed together. An inner surface of the sealing rubber groove has a positioning unit which makes it easier to fix an installation position of the sealing rubber body in the sealing rubber groove.

A metal pole plate sealing structure for a fuel cell is disclosed, as well as a fuel cell using this structure. The metal pole plate sealing structure for a fuel cell includes a metal pole plate, a membrane electrode assembly and a sealing rubber body. The metal pole plate has a sealing rubber groove. The sealing rubber body is accommodated in the sealing rubber groove. The sealing rubber groove, the sealing rubber body and a frame of the membrane electrode assembly cooperate with each other to seal an internal space enclosed when the metal pole plate and the membrane electrode assembly are pressed together. An inner surface of the sealing rubber groove has a positioning unit which makes it easier to fix an installation position of the sealing rubber body in the sealing rubber groove.

Disclosed are methods manufacturing a four-layer membrane electrode assembly integrated with an adhesive film. The methods include a step of preparing a three-layer membrane electrode assembly comprising a first electrode and a second electrode by attaching the first electrode to a first surface of an electrolyte membrane, attaching the second electrode to a second surface of the electrolyte membrane, and joining a first gas diffusion layer to the first electrode; and a step of attaching an adhesive film to the three-layer membrane electrode assembly by preparing the adhesive film by attaching an upper protective film to an upper surface of the adhesive film and a lower protective film to a lower surface of the adhesive film, removing the lower protective film, and attaching the adhesive film to an outer peripheral region of the membrane electrode assembly including the second electrode.

Disclosed are methods manufacturing a four-layer membrane electrode assembly integrated with an adhesive film. The methods include a step of preparing a three-layer membrane electrode assembly comprising a first electrode and a second electrode by attaching the first electrode to a first surface of an electrolyte membrane, attaching the second electrode to a second surface of the electrolyte membrane, and joining a first gas diffusion layer to the first electrode; and a step of attaching an adhesive film to the three-layer membrane electrode assembly by preparing the adhesive film by attaching an upper protective film to an upper surface of the adhesive film and a lower protective film to a lower surface of the adhesive film, removing the lower protective film, and attaching the adhesive film to an outer peripheral region of the membrane electrode assembly including the second electrode.

A flow battery comprising: a first tank having a variable internal volume and containing a first ionic solution having a first oxidation state, and wherein the first tank is substantially evacuated of any gas; a second tank having a variable internal volume and containing a second ionic solution having a second oxidation state that is different from the first oxidation state, and wherein the second tank is substantially evacuated of any gas; a reaction chamber operatively coupled with the first and second tanks such that the first ionic solution within the reaction chamber is separated from the second ionic solution by an ion exchange membrane; a first pump configured to pump the first ionic solution through the reaction chamber; and a second pump configured to pump the second ionic solution through the reaction chamber.

There may be provided a fuel cell stack unit comprising: a first gas separating plate; a first sealing gasket; a metal support, an end cell, and an air inlet being formed in the outer peripheral side of the center portion; a second sealing gasket; and a second gas separating plate stacked on the lower side of the second sealing gasket, wherein air introduced from the air inlet of the first gas separating plate successively passes through the air inlets formed in the first sealing gasket, the metal support, and the second sealing gasket, respectively, and flows from one side of the end cell to the other side thereof along a stacking boundary between the lower side of the end cell and the upper side of the second gas separating plate; and the second sealing gasket is recessed inward from an edge of the second sealing gasket.

There may be provided a fuel cell stack unit comprising: a first gas separating plate; a first sealing gasket; a metal support, an end cell, and an air inlet being formed in the outer peripheral side of the center portion; a second sealing gasket; and a second gas separating plate stacked on the lower side of the second sealing gasket, wherein air introduced from the air inlet of the first gas separating plate successively passes through the air inlets formed in the first sealing gasket, the metal support, and the second sealing gasket, respectively, and flows from one side of the end cell to the other side thereof along a stacking boundary between the lower side of the end cell and the upper side of the second gas separating plate; and the second sealing gasket is recessed inward from an edge of the second sealing gasket.

A fuel cell includes: a membrane electrode assembly (MEA); a first separator stacked on a first surface of the membrane electrode assembly; a second separator stacked on a second surface of the membrane electrode assembly; a first sealing member disposed on the first separator and configured to seal a space between the first separator and the membrane electrode assembly; a second sealing member disposed on the second separator and configured to seal a space between the second separator and the membrane electrode assembly; and a fastening part configured to fasten the first sealing member to the second sealing member.

A fuel cell includes: a membrane electrode assembly (MEA); a first separator stacked on a first surface of the membrane electrode assembly; a second separator stacked on a second surface of the membrane electrode assembly; a first sealing member disposed on the first separator and configured to seal a space between the first separator and the membrane electrode assembly; a second sealing member disposed on the second separator and configured to seal a space between the second separator and the membrane electrode assembly; and a fastening part configured to fasten the first sealing member to the second sealing member.