Sol-gel material, and use thereof
AssigneeTechnological University Dublin
InventorsC. M. Iftekhar Hussain, Mohamed Oubaha, Brian Norton, Aidan Duffy
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Abstract
A thermophotovoltaic (TPV) system, comprises a substrate, an emitter material adhered to the substrate, and a thermophotovoltaic (TPV) cell. The emitter material is a typically a metal oxide doped nickel oxide sol-gel material, in which the metal is magnesium or zirconium, and in which the sol-gel material comprises 97-99 mol % metal oxide, and about 1-3 mol % nickel oxide dopant. Providing an emitter material as a sol-gel allows the material to be coated on to surfaces providing better adherence to the surface, and also provides excellent heat stability. A sol-gel material is also described.
Claims2
A method of making nickel oxide doped metal oxide sol-gel, and the method comprising the steps of:
- I. providing a magnesium nitrate hydrate precursor solution;
- II. providing a nickel alkoxide dopant precursor solution comprising nickel chloride hexahydrate and water;
- III. mixing the two solutions to provide a colloidal sol;
- and
- IV. dehydrating the colloidal sol to provide the nickel oxide doped magnesium oxide sol-gel.
A method of making a nickel oxide doped zirconium oxide sol-gel, the method comprising the steps of:
- providing a zirconium alkoxide precursor solution by diluting the zirconium alkoxide in Methacrylic acid, stirring for a suitable period of time, adding a solvent to disperse the solution, and further stirring of the solution;
- providing a nickel alkoxide dopant precursor solution by mixing nickel 2-methoxyethoxide in an alcohol;
- mixing the two solutions to provide a first colloidal sol;
- adding water and solvent to the first colloidal sol to release nickel ions and generate a second colloidal sol;
- and
- dehydrating the second colloidal sol to provide the zirconium oxide doped nickel oxide sol-gel.
Dependencies are inferred from the claim text.