Aluminum trihalide-neutral ligand ionic liquids and their use in aluminum deposition
AssigneeUT-Battelle, LLC
InventorsSheng Dai, Xiao-Guang Sun, Youxing Fang, Kazuki Yoshii
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Abstract
An ionic liquid composition comprising a complex of a trihalo aluminum (III) species with at least one organic uncharged ligand comprising a ring structure having at least three ring carbon atoms and at least one ring heteroatom selected from nitrogen and sulfur, wherein the complex is a liquid at a temperature of 100° C. or less. Methods of electroplating aluminum onto a metallic substrate using the above-described ionic liquid composition are also described.
Claims24
An ionic liquid composition comprising a complex of a trihalo aluminum (III) species with at least one organic uncharged ligand comprising a ring structure having at least three ring carbon atoms and at least one ring heteroatom selected from nitrogen and sulfur, wherein said complex is a liquid at a temperature of 100° C. or less.
A method of electroplating aluminum onto a metallic substrate, the method comprising:
- (i) contacting said metallic substrate, in the substantial absence of water, with an ionic liquid composition comprising a complex of a trihalo aluminum (III) species with at least one organic uncharged ligand comprising a ring structure having at least three ring carbon atoms and at least one ring heteroatom selected from nitrogen and sulfur, wherein said ionic liquid composition is in contact with an anode, and
- (ii) applying a voltage potential between the anode and said metallic substrate as cathode to produce a coating of aluminum on said metallic substrate while the metallic substrate is in contact with the ionic liquid composition.
Dependencies are inferred from the claim text.