Fuelcell Energy, Inc.

Global Thermmelectric Inc.

Versa Power Systems Ltd

Dennis Prediger

Martin Perry

Michael Pastula

Arpad Horvath

Scott Sherman

Zheng Tang

Debabrata Ghosh

Jim Lumsden

Frank Martell

A solid oxide fuel cell stack incorporates metallic interconnects each of which includes a fuel intake manifold, a fuel exhaust manifold, an oxidant intake manifold and an oxidant exhaust manifold. The fuel side of the interconnect defines a fuel flow field surrounded by a continuous sealing surface and in fluid communication with the fuel intake and exhaust manifold. The oxidant side of the interconnect defines an oxidant flow field surrounded by a continuous sealing surface and in fluid communication with the oxidant intake and exhaust manifolds. The interconnect may be fabricated by brazing together three stainless steel plates having overlapping openings to permit the exclusionary flow of fuel and oxidant through the interconnect.

Electrochemical cell interconnect

A solid oxide fuel cell stack includes a thermally responsive compression element. The compression element extends between the top and bottom plates of the stack and has an overall coefficient of thermal expansion which is substantially the same or less than the composite coefficient of thermal expansion of the stack itself. The compression element may be elongated and include a lower rod, an upper sleeve and an intermediate expansion member which are concentrically arranged. The expansion member bears on shoulders formed on the lower rod and upper sleeve to provide a compressive force at elevated temperatures, if the expansion member has a higher coefficient of thermal expansion than the lower rod and upper sleeve.

SOFC stack with thermal compression

An integrated module includes an afterburner, heat exchanger and fuel processor. The module is thermally integrated solid oxide fuel cell.

Integrated module for solid oxide fuel cell systems

Growing community of inventors

Calgary, Canada

Dennis Prediger