Solid oxide fuel cell electrolyte and method
AssigneeHowmet Corporation
InventorKenneth Murphy
Life of this patent
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Abstract
A method of making a solid oxide fuel cell electrolyte includes preheating a substrate on which an oxide electrolyte layer is to be deposited to a substrate temperature of about 1100° C. and above, impinging a surface of a source comprising the oxide with an electron beam in an evacuated chamber at a pressure of about 10−3 or less mm of Hg devoid of process gas, such as oxygen, to evaporate the oxide in the chamber, and placing the preheated substrate in the chamber where the oxide deposits on the preheated substrate. The oxide fuel cell electrolyte is deposited having a columnar oxide microstructure.
Claims14
Method of making an oxide layer, comprising heating a substrate on which the oxide layer is to be deposited to a substrate temperature of about 1100° C. and above, impinging a surface of a source comprising the oxide with an electron beam in a chamber at a pressure of about 10−3 or less mm of Hg to evaporate the oxide in the chamber, depositing oxide on the heated substrate in the chamber where the oxide deposits on the heated substrate to form the oxide layer.
An oxide fuel cell electrolyte having a columnar oxide microstructure.
A fuel cell comprising an anode, cathode, and an oxide electrolyte between the anode and the cathode and having a microstructure comprising a plurality of oxide columns.
Dependencies are inferred from the claim text.