Staxera Gmbh

Sunfire Gmbh

Vaillant Gmbh

Andreas Reinert

Marco Plümke

Axel Birrenbach

Ulrich Demandewicz

Richard Fischbuch

Daniel Lips

Andrej Windholz

Mark Wagner

Thomas Badenhop

Stefan Schweitzer-De Bortoli

Ulf Schmerbeck

Peter Freidank

Norbert Gaisbauer

Stefan Hucke

Christian Heiler

Carsten Alff

Berthold Schnurbus

Gordon Folkerts

Claudia Rottschy

Andre Autermann

Jens Funcke

Norman Leonhard Reinke

Andreas Ehlers

Jochen Grabe

Arnold Wohlfeil

Christian Fischer

Sven Hanfland

Bodo Oerder

Jörg Tomczak

Frank Salg

Carolin Feldmann

Michael Paul

Klaus Richter

Marco Hahn

Frank Altendorf

Heinz-Jörg Tomczak

Jan Van Zoggel

Knut Bahlke

Tim Nettingsmeier

Jochen Paulus

Dirk Haibach

Alexander Graf

Tobias Funke

The invention relates to an interconnector arrangement for a fuel cell stack, which can be brought into electrical contact with at least one membrane electrode assembly and which is arranged to separate a cathode flow field of the fuel cell stack from an anode flow field of the fuel cell stack. The invention is characterized in that the interconnector arrangement comprises a hollow space separated from the anode flow field and from the cathode flow field such that a flow of gas through the hollow space may not be more than five percent of flow-off gas through the cathode flow field or the anode flow field. The invention also relates to a fuel cell stack and to a method for manufacturing an interconnector arrangement.

Interconnector arrangement for a fuel cell stack

A fuel cell stack with a plurality of membrane electrode assemblies (MEAs) and a plurality of bipolar plates, wherein at least one surface of a first bipolar plate runs in undulating fashion, meandering fashion or zig-zag-shaped fashion and extreme points of the surface of the bipolar plate make contact with a first surface of a MEA at contact points. At least some of the contact points are associated with mating contact points on a second surface of the MEA, which surface is opposite the first surface of the MEA, with a surface of a second bipolar plate making contact with said mating contact points, and that the contact points and the associated mating contact points are positioned one above the other in the stacking direction. A method for producing a fuel cell stack is provided. A bipolar plate for a fuel cell stack is also provided.

Fuel cell stack

The invention relates to a contact arrangement for a fuel cell stack, especially for an SOFC fuel cell stack, comprising an interconnector arrangement which is arranged to establish an electrically conducting connection via at least one contact element on the anode side and at least one such element on the cathode side between an anode of a first membrane electrode assembly and a cathode of a second membrane electrode assembly. The invention is characterized in that at least one component to be sintered is provided on only one side of the interconnector arrangement, on the side of the interconnector arrangement facing the anode or the one facing the cathode, the component being coupled to the first or second membrane electrode assembly in such a manner that the electrically conducting connection can be established via the contact element on the anode side or via that on the cathode side by sintering the component to be sintered. The invention also relates to a method for assembling a fuel cell stack form at least one such contact arrangement. The invention further relates to a fuel cell stack, especially an SOFC fuel cell stack, comprising said contact arrangement, the fuel cell stack preferably being assembled according to the aforementioned method.

Contact arrangement and method for assembling a fuel cell stack from at least one contact arrangement

The invention relates to a repeating unit for a fuel cell stack comprising a membrane electrode assembly and a flow field designed to supply an active surface of the membrane electrode assembly with gas and comprising at least a gas passage orifice. According to the invention it is contemplated that a gas-tight gas flow barrier is disposed between the active surface and the gas passage orifice so that gas passing through the first gas passage orifice flows around the gas flow barrier, wherein the projection of the gas flow barrier towards the periphery of the active surface is at least half as long as the projection of the gas passage orifice towards the periphery of the active surface.

Flow field unit for a fuel cell stack

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Witten, Germany

Andreas Reinert