Nano-composite electrodes and method of making the same

Details Nano-composite electrodes and method of making the same Nano-composite electrodes and method of making the same

C - Chemistry, Metallurgy

25

B

C25B 11/04 (2006.01) C04B 35/01 (2006.01) C04B 35/488 (2006.01) C25B 11/00 (2006.01) H01M 4/86 (2006.01) H01M 4/88 (2006.01) H01M 4/90 (2006.01) H01M 8/10 (2006.01) H01M 8/12 (2006.01)

Patent

CA 2450679

A method of making ceramic electrode materials comprising intimate mixtures of two or more components, including at least one nanoscale ionically conducting ceramic electrolyte material (e.g., yttrium-stabilized zirconia, gadolinium-doped ceria, samarium- doped ceria. etc.) and at least one powder of an electrode material, which may be an electrically conducting ceramic electrode material (e.g , lanthanum strontium manganite, praseodymium strontium manganese iron oxide, lanthanum strontitum ferrite, lanthanum strontium cobalt ferrite, etc.) or a precursor of a metallic electrode material (e.g., nickel oxide, copper oxide, etc.). The invention also includes anode and cathode coatings and substrates for solid oxide fuel cells prepared by this method.

L'invention concerne un procédé de fabrication de matériaux céramiques d'électrodes, consistant à mélanger intimement deux ou plusieurs composants, y compris au moins un matériau électrolyte céramique, ioniquement conducteur, d'ordre nanométrique (par exemple, zircone stabilisée à l'yttrium, cérine dopée au gadolinium, cérine dopée au samarium, etc.) et au moins une poudre d'un matériau pour électrode, pouvant être un matériau céramique pour électrodes, électriquement conducteur (par exemple, manganite de lanthane strontium, oxyde de fer praséodyme strontium manganèse, ferrite de lanthane strontium, ferrite de lanthane strontium cobalt, etc.), ou un précurseur d'un matériau métallique pour électrode (par exemple, oxyde de nickel, oxyde de cuivre, etc.). L'invention concerne également des enrobages pour anodes et cathodes, ainsi que des substrats pour piles à combustible à oxydes solides préparés conformément audit procédé.

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