Solid Oxide Fuel Cell Electrode Fabrication by Infiltration

Solid Oxide Fuel Cell Electrode Fabrication by Infiltration 

Infiltration is a weU-known method in heterogeneous catalyst applications. Infiltration, also known as impregnation, is commonly used for the preparation of supported catalyst systems. It involves the dispersion of a metal salt component into a support. It has recently been appHed to produce enhanced SOFC electrodes in order to solve the problems mentioned above. This chapter is intended to provide an overview of the application of infiltration in manufacturing SOFC electrodes, the procedures that are implemented to impregnate the electrode materials and the improvements achieved with infiltrated electrodes. 

SOFC is composed of a dense oxygen ion-conducting electrolyte separating a porous anode and a porous cathode as a single cell. Electrical intercoruiections can be used to combine the individual cells to produce a stack. The ceU is operated by supplying oxygen at the cathode which is reduced at the cathode-electrolyte interface. At the same time, fuel gas is fed to the anode and it is oxidized at 

Fuel Cell Science and En neeting Materials, Processes, Systems and Technology, 

First Edition. Edited by Detlef Stolten and Bemd Emonts. 

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I JO Solid Oxide Fuel Cell Electrode Fabrication by Infiltration... 

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