An alloy member includes a base member that includes a recess in a surface of the base member and is constituted by an alloy material containing chromium, an anchor portion is disposed in the recess and contains an oxide containing manganese and a covering layer is connected to the anchor portion and contains a low-equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than that of chromium.

A kit for a fuel cell stack comprises a first plurality of unit cells of the same design, which can be stacked on top of each other in a stacking direction and which each have one or more media channels and a membrane electrode assembly, the membrane electrode assembly comprising a cathode, an anode, and a membrane arranged between the cathode and the anode, a first media guide, which can be laterally connected to the first plurality of unit cells and runs parallel to the stacking direction, having a first usable flow cross section, in order to guide a medium into or out from the media channels of the unit cells of the first plurality of unit cells substantially laterally with respect to the stacking direction, a second plurality of unit cells of the same design, and a second media guide, which can be connected laterally to the two pluralities of unit cells stacked on top of one another and running parallel to the stacking direction, having a second usable flow cross section, different from the first usable flow cross section, in order to guide a medium into or out from the media channels of the unit cells of the two pluralities of unit cells substantially laterally to the stacking direction. A method for production of a fuel cell stack of a fuel cell device is also provided.

A kit for a fuel cell stack comprises a first plurality of unit cells of the same design, which can be stacked on top of each other in a stacking direction and which each have one or more media channels and a membrane electrode assembly, the membrane electrode assembly comprising a cathode, an anode, and a membrane arranged between the cathode and the anode, a first media guide, which can be laterally connected to the first plurality of unit cells and runs parallel to the stacking direction, having a first usable flow cross section, in order to guide a medium into or out from the media channels of the unit cells of the first plurality of unit cells substantially laterally with respect to the stacking direction, a second plurality of unit cells of the same design, and a second media guide, which can be connected laterally to the two pluralities of unit cells stacked on top of one another and running parallel to the stacking direction, having a second usable flow cross section, different from the first usable flow cross section, in order to guide a medium into or out from the media channels of the unit cells of the two pluralities of unit cells substantially laterally to the stacking direction. A method for production of a fuel cell stack of a fuel cell device is also provided.

Disclosed herein are a fuel cell manifold and a fuel cell stack including the same. The manifold may include a cover plate, an air guide plate configured to guide a flow of air in the manifold, a fuel guide plate configured to guide a flow of fuel in the manifold, and an auxiliary plate providing a passage for inflow of air and outflow of fuel.

Disclosed herein are a fuel cell manifold and a fuel cell stack including the same. The manifold may include a cover plate, an air guide plate configured to guide a flow of air in the manifold, a fuel guide plate configured to guide a flow of fuel in the manifold, and an auxiliary plate providing a passage for inflow of air and outflow of fuel.

A fuel cell stack fuel plenum includes a base plate including an inlet hole and an outlet hole, a dielectric layer disposed on the base plate and including an inlet hole and an outlet hole, a cover plate disposed on the dielectric layer and including an inlet hole and an outlet hole, a seal plate disposed on the cover plate and including an inlet hole and an outlet hole, and a manifold plate disposed on the seal plate. The manifold plate includes a bottom inlet hole and a bottom outlet hole formed in a bottom surface of the manifold plate, top outlet holes and top inlet holes formed in opposing sides of a top surface of the manifold plate, outlet channels fluidly connecting the top outlet holes to the bottom inlet hole, and inlet channels fluidly connecting the top inlet holes to the bottom outlet hole.

A fuel cell stack fuel plenum includes a base plate including an inlet hole and an outlet hole, a dielectric layer disposed on the base plate and including an inlet hole and an outlet hole, a cover plate disposed on the dielectric layer and including an inlet hole and an outlet hole, a seal plate disposed on the cover plate and including an inlet hole and an outlet hole, and a manifold plate disposed on the seal plate. The manifold plate includes a bottom inlet hole and a bottom outlet hole formed in a bottom surface of the manifold plate, top outlet holes and top inlet holes formed in opposing sides of a top surface of the manifold plate, outlet channels fluidly connecting the top outlet holes to the bottom inlet hole, and inlet channels fluidly connecting the top inlet holes to the bottom outlet hole.

A venting system includes a housing and an air intake manifold. The housing receives a fuel cell stack, and the air intake manifold extends along the fuel cell stack. The air intake manifold directs a flow of air to the fuel cell stack, and is disposed adjacent to and in contact with the fuel cell stack.

A venting system includes a housing and an air intake manifold. The housing receives a fuel cell stack, and the air intake manifold extends along the fuel cell stack. The air intake manifold directs a flow of air to the fuel cell stack, and is disposed adjacent to and in contact with the fuel cell stack.

An embodiment air-cooled fuel cell includes a cell stack, an air inlet manifold configured to allow air to flow into the cell stack therethrough, an air outlet manifold configured to allow the air to flow out of the cell stack therethrough, and a manifold opening/closing controller disposed at the air inlet manifold or the air outlet manifold and configured to allow or interrupt inflow or outflow of the air based on an operation state of the cell stack.