Hexis Ag

Josef Sfeir

Roland Denzler

Andreas Mai

Boris Iwanschitz

Dirk Haberstock

Ueli Weissen

Andreas Kaiser

The method serves for the manufacture of contacts between electrochemically active discs () and interconnectors () in planar high temperature fuel cells. The interconnectors have air-side and gas-side surface profiles (') with contact surfaces () located on raised portions (). A layer consisting of a contacting mixture (&#x2032;) is respectively applied onto the electrodes (&#x2032;) of the electrochemically active discs or onto the contact surfaces. The surface profiles for the electrodes are brought into contact with the applied layer so that, at a working temperature, the raised portions penetrate into this layer. Connections are formed between the contact surfaces and electrically conductive particles in this way and thus form discrete, homogeneously structured connections between the contact surfaces and the electrodes. Finally the medium embedding the particles is removed under thermal part treatments and the discrete connections are solidified.

Method for the manufacture of contacts between electrochemically active discs and interconnectors in high temperature fuel cells

A fuel cell system () having a cell stack () for the carrying out of electrochemical reactions is provided which is provided with inlets () for an oxidant () and for fuel gas () and with outlets () for exhaust gases (). The fuel cell system () additionally includes an apparatus () having a gas-permeable structure which contains a substance which reacts with gaseous chromium species, wherein the apparatus is in communication with at least one of the outlets to direct exhaust gases through the apparatus and to separate chromium species which are carried along by the exhaust gases.

Fuel cell system

Growing community of inventors

Buelach, Switzerland

Josef Sfeir