Electrode for molten carbonate fuel cell and method for its production
AssigneeMtu Onsite Energy GmbH
InventorsMarc Bednarz, Ursula Paulus-Rodatz
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Abstract
The present invention relates to an electrode for a molten carbonate fuel cell, with an electrochemically active electrode layer (10, 20), which is provided with cavities (12, 22). The invention provides that the cavities (12, 22) are surrounded and delimited by particles (13, 23) resulting from at least one imaging material. The present invention also relates to a process for producing such an electrode.
Claims26
An electrode for a molten carbonate fuel cell, with an electrochemically active electrode layer (10, 20) provided with cavities (12, 22), which contains an electrode material consisting of first particles (11), characterized by the fact that the electrode additionally contains at least one imaging material in the form of second particles (13, 23), which delimit the cavities (12, 22), which represent the image of a expanding agent originally situated at the location of the cavities (12, 22) before burn-off.
A method for production of an electrode for a molten carbonate fuel cell, in which a mixture is prepared for production of an electrochemically active electrode layer (10, 20), which contains at least one electrode material consisting of first particles (11), at least one expanding agent and at least one binder, and in which the resulting green compact is heated so that the at least one expanding agent and the at least one binder are burned off, characterized by the fact that in the mixture before burn-off at least one imaging material in the form of second particles (13, 23) or in the form of a material that yields second particles (13, 23) during drying or heating is introduced, specifically in an amount and the particles (13, 23) in a size so that the imaging material (13, 23) covers the expanding agent at least for the most part and that after burn-off cavities (12, 22) delimited by the imaging material remain.
Dependencies are inferred from the claim text.