Disclosed is an improved fuel cell apparatus. The fuel cell apparatus comprises at least one fuel cell, the fuel cell comprising two bipolar plates (200a 200b), one providing an anode side, and the other providing a cathode side, the fuel cell being configured to have a fuel inlet and a fuel outlet, and a membrane electrode assembly (422) disposed between the fuel inlets (201) and fuel outlets (203) of the bipolar plates. The at least one fuel cell is retained by a housing, the housing comprising a first outer plate and a second outer plate, each located on an opposite face of the at least one fuel cell. The housing further comprises a cooling element support which is adapted to support one or more fans that are adapted to provide an air flow toward the at least one fuel cell.

The present invention relates to an SOEC system (1), comprising a fuel cell stack (2) having a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side (3), wherein the ejector (5) comprises a primary inlet (7), for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary portion (9) of the ejector (5), and a secondary inlet (10), for introducing recirculated secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) into a secondary portion (13) of the ejector (5), wherein the SOEC system (1) further comprises a control gas supply portion (14) for supplying control gas into the primary portion (9) and into the secondary portion (13) in order to control a pressure and/or mass flow in the primary portion (9) and in the secondary portion (13), and wherein the control gas supply portion (14) comprises a valve arrangement (19, 20) for controlling the pressure and/or the mass flow in the primary portion (9) and in the secondary portion (13).

The invention further relates to a method for operating an SOEC system (1) according to the invention.

The present invention relates to an SOEC system (1), comprising a fuel cell stack (2) having a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side (3), wherein the ejector (5) comprises a primary inlet (7), for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary portion (9) of the ejector (5), and a secondary inlet (10), for introducing recirculated secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) into a secondary portion (13) of the ejector (5), wherein the SOEC system (1) further comprises a control gas supply portion (14) for supplying control gas into the primary portion (9) and into the secondary portion (13) in order to control a pressure and/or mass flow in the primary portion (9) and in the secondary portion (13), and wherein the control gas supply portion (14) comprises a valve arrangement (19, 20) for controlling the pressure and/or the mass flow in the primary portion (9) and in the secondary portion (13).

The invention further relates to a method for operating an SOEC system (1) according to the invention.

A hydrogen-electric engine includes a fuel cell stack including a plurality of fuel cells. Each fuel cell of the plurality of fuel cells includes an anode and a cathode. The hydrogen-electric engine also includes an air compressor system configured to supply compressed air to the cathode, a hydrogen fuel source configured to supply hydrogen gas, an elongated shaft supporting the air compressor system and the fuel cell stack, and a motor assembly disposed in electrical communication with the fuel cell stack. Each fuel cell generates a voltage, as an open cell voltage, by forming water with the supplied compressed air and the supplied hydrogen gas and is electrically coupled with a clamp circuit.

A hydrogen-electric engine includes a fuel cell stack including a plurality of fuel cells. Each fuel cell of the plurality of fuel cells includes an anode and a cathode. The hydrogen-electric engine also includes an air compressor system configured to supply compressed air to the cathode, a hydrogen fuel source configured to supply hydrogen gas, an elongated shaft supporting the air compressor system and the fuel cell stack, and a motor assembly disposed in electrical communication with the fuel cell stack. Each fuel cell generates a voltage, as an open cell voltage, by forming water with the supplied compressed air and the supplied hydrogen gas and is electrically coupled with a clamp circuit.

A cell includes a support substrate that is of a flat plate shape that includes a first principal surface and a second principal surface on an opposite side of the first principal surface and a columnar shape that includes a longitudinal direction and includes a gas flow path in an inside thereof, and a plurality of element parts that are arranged away from one another on the first principal surface and the second principal surface where at least a fuel electrode, a solid electrolyte film, and an air electrode are laminated thereon. The cell includes a first portion that is located on a side of the first principal surface with respect to the gas flow path and a second portion that is located on a side of the second principal surface with respect to the gas flow path. Structures of the first portion and the second portion are asymmetric.

A method and system for releasably storing hydrogen and generating electricity including an electrochemical cell including a cathode, an anode, an electrolyte, a microporous separator, an electrical connection between the cathode and the anode, an amine source, a nitrile source, a hydrogen source, and an oxygen source, wherein the electrochemical cell is configured to be operated in a hydrogen storage mode, a hydrogen release mode, and electrical generation mode. The amine/nitrile redox couple provides for full cycle electrochemical conversion of hydrogen under mild conditions.

A method and system for releasably storing hydrogen and generating electricity including an electrochemical cell including a cathode, an anode, an electrolyte, a microporous separator, an electrical connection between the cathode and the anode, an amine source, a nitrile source, a hydrogen source, and an oxygen source, wherein the electrochemical cell is configured to be operated in a hydrogen storage mode, a hydrogen release mode, and electrical generation mode. The amine/nitrile redox couple provides for full cycle electrochemical conversion of hydrogen under mild conditions.

A fuel cell includes a flow guide, a component for allowing a first fluid to flow from a first manifold to a second manifold and through a reactive zone, a peripheral seal disposed between the flow guide and the component, an intermediate seal disposed between the flow guide and the component, the intermediate seal being encircled by the peripheral seal and encircling the reactive zone, another component opposite the flow guide to allow a second fluid to flow from a third manifold to a fourth manifold and through another reactive zone, and a fluid flow circuit provided between the intermediate seal and the peripheral seal between fifth and sixth manifolds. One of the fifth and sixth manifolds is separated from the first to fourth manifolds by the intermediate seal.

A fuel cell includes a flow guide, a component for allowing a first fluid to flow from a first manifold to a second manifold and through a reactive zone, a peripheral seal disposed between the flow guide and the component, an intermediate seal disposed between the flow guide and the component, the intermediate seal being encircled by the peripheral seal and encircling the reactive zone, another component opposite the flow guide to allow a second fluid to flow from a third manifold to a fourth manifold and through another reactive zone, and a fluid flow circuit provided between the intermediate seal and the peripheral seal between fifth and sixth manifolds. One of the fifth and sixth manifolds is separated from the first to fourth manifolds by the intermediate seal.