High-temperature fuel cells

H - Electricity – 01 – M

Patent

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H01M 8/12 (2006.01)

Patent

CA 2284203

In the present high temperature fuel cell (2) having a cathode (6) which comprises at least a first layer (12), the first layer (12) contains 30 to 60% by weight of a first electrolyte made up of zirconium oxide ZrO2 and at least one proportion of scandium oxide Sc2O3. By means of this, a high ionic conductivity is achieved fox the cathode (6). The ionic conductivity further remains substantially constant as a function of the operating time t.

L'invention concerne une pile à combustible (2) haute température dotée d'une cathode (6) comprenant au moins une première couche (12). Cette première couche (12) contient 30 à 60 % en poids d'un premier électrolyte en oxyde de zirconium ZrO2 et au moins une proportion d'un oxyde de scandium Sc2O3. On obtient ainsi une cathode (6) à conductivité ionique élevée. En outre, la conductivité ionique est sensiblement maintenue en fonction du temps de fonctionnement t.

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