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1. WO2008013783 - ÉLECTRODES RÉVERSIBLES EFFICACES POUR CELLULES D'ÉLECTROLYSEUR À OXYDE SOLIDE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

1. An electrolyzer cell comprising:
a cathode to reduce an oxygen-containing molecule to produce an oxygen ion and a fuel molecule;
an electrolyte coupled to the cathode to transport the oxygen ion; and
an anode coupled to the electrolyte to receive the oxygen ion to produce oxygen gas therewith, the anode comprising an electron-conducting phase comprising a perovskite having a chemical formula of substantially (Pr(i.x)Lax)(Z.y)AlyBO(3^), wherein 0 < x < 0.5, 0 < y < 0.5, and 0.8 < z < 1.1.

2. The electrolyzer cell of claim 1, wherein the anode further comprises an ion-conducting phase intermixed with the electron-conducting phase, the ion-conducting phase comprising an oxide.

3. The electrolyzer cell of claim 2, wherein the oxide comprises zirconia doped with at least one of yttrium oxide, ytterbium oxide, calcium oxide, magnesium oxide, scandium oxide, and cerium oxide.

4. The electrolyzer cell of claim 2, wherein the oxide comprises ceria doped with at least one of yttrium oxide, ytterbium oxide, calcium oxide, magnesium oxide, scandium oxide, and zirconium oxide.

5. The electrolyzer cell of claim 1, wherein the anode is porous, the porosity thereof being infiltrated with an electrocatalyst.

6. The electrolyzer cell of claim 5, wherein the electrocatalyst comprises at least one of praseodymium, cobalt, cerium, europium, and other rare earth elements.

7. The electrolyzer cell of claim 1, wherein A' is an alkaline earth metal.

8. The electrolyzer cell of claim 7, wherein the alkaline earth metal comprises at least one of calcium and strontium.

9. The electrolyzer cell of claim 1, wherein B is a transition metal.

10. The electrolyzer cell of claim 9, wherein the transition metal comprises at least one of manganese, cobalt, and iron.

11. The electrolyzer cell of claim 1, wherein the oxygen-containing molecule is selected from the group consisting OfH2O and CO2.

12. The electrolyzer cell of claim 1, wherein the fuel molecule is selected from the group consisting of H2 and CO.

13. The electrolyzer cell of claim 1, wherein the cathode comprises an electron-conducting phase comprising nickel oxide intermixed with magnesium oxide.

14. An electrolyzer cell comprising:
a cathode to reduce an oxygen-containing molecule to produce an oxygen ion and a fuel molecule, the cathode comprising an electron-conducting phase comprising nickel oxide intermixed with magnesium oxide;
an electrolyte coupled to the cathode to transport the oxygen ion; and
an anode coupled to the electrolyte to receive the oxygen ion to produce oxygen gas therewith.

15. The electrolyzer cell of claim 14, wherein the nickel oxide is reduced to nickel upon operating the electrolyzer cell.

16. The electrolyzer cell of claim 14, wherein the molar ratio of nickel oxide to magnesium oxide is greater than or equal to three.

17. The electrolyzer cell of claim 14, wherein the cathode further comprises an ion-conducting phase intermixed with the electron-conducting phase, the ion-conducting phase comprising an oxide.

18. The electrolyzer cell of claim 17, wherein the oxide comprises zirconia doped with at least one of yttrium oxide, ytterbium oxide, calcium oxide, magnesium oxide, and scandium oxide.

19. The electrolyzer cell of claim 17, wherein the oxide comprises ceria doped with at least one of samarium oxide, gadolinium oxide, yttrium oxide, ytterbium oxide, calcium oxide, magnesium oxide, and scandium oxide.

20. The electrolyzer cell of claim 14, wherein the cathode is porous, the porosity thereof being infiltrated with an electrocatalyst.

21. The electrolyzer cell of claim 20, wherein the electrocatalyst comprises at least one of praseodymium, cobalt, cerium, europium, and other rare earth elements.

22. The electrolyzer cell of claim 14, wherein the oxygen-containing molecule is selected from the group consisting of HbO and CO2.

23. The electrolyzer cell of claim 14, wherein the fuel is selected from the group consisting of H2 and CO.

24. The electrolyzer cell of claim 14, wherein the anode comprises an electron-conducting phase comprising a perovskite having a chemical formula of substantially (Pr(i_X)Lax)(z-y)AyBO(3.a), wherein 0 < x < 0.5, 0 < y < 0.5, and 0.8 < z < 1.1.