A fuel cell system includes: a supply flow path configured to supply reactant gas; a first branch flow path branching off from an outlet end of the supply flow path and configured to guide the reactant gas to a first fuel cell stack; a second branch flow path branching off from the outlet end of the supply flow path and configured to communicate with the first branch flow path and guide the reactant gas to a second fuel cell stack; and an inlet area change part disposed in a boundary zone between the first branch flow path and the second branch flow path and configured to selectively change inlet areas of the first and second branch flow paths. Efficiency in discharging condensate water is increased and performance and operational efficiency are improved.

A fuel cell system includes: a supply flow path configured to supply reactant gas; a first branch flow path branching off from an outlet end of the supply flow path and configured to guide the reactant gas to a first fuel cell stack; a second branch flow path branching off from the outlet end of the supply flow path and configured to communicate with the first branch flow path and guide the reactant gas to a second fuel cell stack; and an inlet area change part disposed in a boundary zone between the first branch flow path and the second branch flow path and configured to selectively change inlet areas of the first and second branch flow paths. Efficiency in discharging condensate water is increased and performance and operational efficiency are improved.

A fuel cell arrangement with a membrane electrode assembly is provided which comprises a cathode, an anode and a membrane arranged between the cathode and the anode, with an active area essentially predetermined by the membrane electrode assembly, and with a sealing structure laterally assigned to the membrane electrode assembly. The sealing structure comprises a sealing tongue extending into or over an edge region outside the active area for axially covering in a gas-tight manner a media channel formed in an adjacent bipolar plate and located in the edge region. A unit cell for a fuel cell stack with such a fuel cell arrangement is also provided.

An apparatus can include a housing, a plurality of electrochemical devices disposed within the housing, and a heat exchanger disposed within the housing. The heat exchanger can be faced with an oxidant-containing gas outlet surface of at least one of the plurality of electrochemical devices. The electrochemical devices can include a stack of solid oxide fuel cells, a battery, or a solid oxide electrolyzer cell.

A fuel cell including: a fuel cell stack; a pair of end plates holding the fuel cell stack by tightening from both ends; and a plurality of gas manifolds fixed to the fuel cell stack and end plates with the sealing members therebetween to supply fuel and oxidant to each of fuel gas flow paths and oxidant gas flow paths of the fuel cell stack, the fuel cell includes: a gas manifold fixing band including: hold plates installed in contact with a back of the gas manifold; a hold plate connecting part connecting the hold plates installed on the backs of adjacent gas manifolds; and a band-tightening part connecting and tightening both ends of a series of hold plates and the hold plate connecting part.

A fuel cell includes a cell stacked body and a manifold. The cell stacked body has elements stacked, each element having: a fuel electrode and an oxidant electrode between which the electrolyte membrane is interposed; a fuel electrode flow channel plate; and an oxidant electrode flow channel plate. The manifold is provided on a lateral surface, of the cell stacked body, along a stacking direction of the cell stacked body and feeds a reaction gas to the fuel electrode flow channel plate or the oxidant electrode flow channel plate. The manifold includes a gas flow channel part that is provided between a plurality of the cell stacked bodies arranged to line up in a first direction perpendicular to the stacking direction and that allows communication between the cell stacked bodies such that the reaction gas passes through.

A system for generating electricity by pyrolyzing organic materials and feeding the pyrolysis fluid to a battery of fuel-cells. The system includes a pyrolysis reactor receiving organic materials and producing pyrolysis fluid. The fluid pyrolysis is then separated into a plurality of sub-mixtures, each provided via a respective separator output. A plurality of fuel-cell devices for generating electricity using different technologies are each coupled to a respective separator output. A controller controls the pyrolysis reactor, the separator device, and the plurality of fuel-cell devices according to a signal representing a demand for electric power, a signal representing cost of operating at least one of the pyrolysis reactor and the fuel-cell generator, and a signal representing minimum price of electric power.

A fuel cell system includes a fuel cell stack, an anode tail gas oxidizer (ATO), an ATO injector configured to mix a first portion of an anode exhaust from the fuel cell stack with a cathode exhaust from the fuel cell stack and to provide a mixture of the first portion of the anode exhaust and the cathode exhaust into the ATO, an anode exhaust conduit which is configured to provide the first portion of the anode exhaust into the ATO injector, and cathode exhaust conduit which is configured to provide at least a portion of the cathode exhaust from the fuel cell stack into the ATO injector. The ATO injector includes injector tubes or injection apertures.

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 fuel cell to provide a higher power density. The fuel cell can be produced by 3D printing in ceramic and has an improved power density by virtue of its spiral shape. In order to better extract the energy generated by the fuel cell, an interconnector sheet can be fastened positively to fastening knobs of the fuel cell by holding eyes. In addition, the interconnector sheet can be fixed by glass solder.