Stable electrolyte matrix for molten carbonate fuel cells
AssigneeFuelCell Energy, Inc.
InventorsAbdelkader HILMI, Arun SURENDRANATH, Chao-Yi YUH, Mohammad FAROOQUE
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Abstract
A method of making an electrolyte matrix includes: preparing a slurry comprising a support material, a coarsening inhibitor, an electrolyte material, and a solvent; and drying the slurry to form an electrolyte matrix. The support material comprises lithium aluminate, the coarsening inhibitor comprises a material selected from the group consisting of MnO2, Mn2O3, TiO2, ZrO2, Fe2O3, LiFe2O3, and mixtures thereof, and the coarsening inhibitor has a particle size of about 0.005 μm to about 0.5 μm.
Claims12
A method of making an electrolyte matrix comprising:
- preparing a slurry comprising a support material, a coarsening inhibitor, an electrolyte material, and a solvent;
- and
- drying the slurry to form an electrolyte matrix,
- wherein the support material comprises lithium aluminate, the coarsening inhibitor comprises a material selected from the group consisting of MnO2, Mn2O3, TiO2, ZrO2, Fe2O3, LiFe2O3, and mixtures thereof, and the coarsening inhibitor has a particle size of about 0.005 μm to about 0.5 μm.
A method of making an electrolyte matrix comprising:
- forming a mixture of an aluminum containing precursor, a lithium containing precursor, and a dopant precursor;
- drying the mixture to form a powder;
- heat treating the powder at a temperature of about 550° C. to about 800° C. for a period of about 6 hours to about 30 hours to form a lithium aluminate including a dopant;
- preparing a slurry comprising the lithium aluminate including a dopant, an electrolyte material, and a solvent;
- and
- drying the slurry to form an electrolyte matrix,
- wherein the dopant precursor is in oxide or salt form, and the dopant comprises a material selected from the group consisting of MnO2, Mn2O3, TiO2, ZrO2, Fe2O3, LiFe2O3, and mixtures thereof.
Dependencies are inferred from the claim text.