Aqueous aluminum batteries and methods of making same
AssigneeCornell University
InventorsLynden A. Archer, Qing Zhao
Life of this patent
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Abstract
Provided are passivation layers for batteries. The batteries may be aqueous aluminum batteries. The passivation layer may be disposed on a portion of or all of a surface or surfaces of an anode, which may be an aluminum or aluminum alloy anode. The passivation layer is bonded to the surface of the anode. The passivation layer may be an organic, nitrogen-rich material and inorganic Al-halide rich or Al-nitrate rich material. The passivation layer may be formed by contacting an aluminum or aluminum alloy substrate, which may be aluminum or aluminum alloy anode, with one or more aluminum halide and one or more ionic liquid.
Claims42
A method for making an aluminum anode having a passivation layer comprising:
- contacting an aluminum anode or an aluminum alloy anode with a composition comprising:
- one or more ionic liquid(s);
- and
- aluminum trichloride (AlCl3), aluminum fluoride (AlF3), aluminum bromide (AlBr3), aluminum iodine (AlI3), or a combination thereof,
- wherein the aluminum anode or aluminum alloy having a passivation layer is formed;
- wherein the contacting comprises coating the composition on the aluminum anode or the aluminum alloy anode, and wherein the coating is dip coating, spin coating, magnetron sputtering, atomic layer deposition, or a combination thereof.
An aqueous aluminum battery comprising:
- an aluminum anode or an aluminum alloy anode having a passivation layer disposed on at least a portion of the surfaces of the aluminum anode or the aluminum alloy anode;
- a cathode;
- and
- an aqueous electrolyte;
- wherein the passivation layer is formed independently from a complete battery.
A method for making an aluminum anode having a passivation layer comprising:
- contacting an aluminum anode or an aluminum alloy anode with a composition comprising:
- one or more ionic liquid(s);
- and
- aluminum trichloride (AlCl3), aluminum fluoride (AlF3), aluminum bromide (AlBr3), aluminum iodine (AlI3), or a combination thereof,
- wherein the aluminum anode or aluminum alloy having a passivation layer is formed;
- and,
- removing substantially all or all of an unreacted portion of the composition.
A method for making an aluminum anode having a passivation layer comprising:
- contacting an aluminum anode or an aluminum alloy anode with a composition comprising:
- one or more ionic liquid(s);
- and
- aluminum trichloride (AlCl3), aluminum fluoride (AlF3), aluminum bromide (AlBr3), aluminum iodine (AlI3), or a combination thereof,
- wherein the aluminum anode or aluminum alloy having a passivation layer is formed;
- and
- wherein the passivation layer is not formed in situ in a battery.
A method for making an aluminum anode having a passivation layer comprising:
- contacting an aluminum anode or an aluminum alloy anode with a composition comprising:
- one or more ionic liquid(s);
- and
- aluminum trichloride (AlCl3), aluminum fluoride (AlF3), aluminum bromide (AlBr3), aluminum iodine (AlI3), or a combination thereof,
- wherein the aluminum anode or aluminum alloy having a passivation layer is formed;
- and
- wherein the passivation layer is formed independently from a complete battery.
An aqueous aluminum battery comprising:
- an aluminum anode or an aluminum alloy anode having a passivation layer disposed on at least a portion of the surfaces of the aluminum anode or the aluminum alloy anode, wherein the passivation layer comprises an organic, nitrogen-rich material and inorganic, Al-halide rich or Al-nitrate rich material;
- a cathode;
- and
- an aqueous electrolyte.
An aqueous aluminum battery comprising:
- an aluminum anode or an aluminum alloy anode having a passivation layer disposed on at least a portion of the surfaces of the aluminum anode or the aluminum alloy anode;
- a cathode;
- and
- an aqueous electrolyte;
- wherein the passivation layer is hydrophobic or at least amphiphilic.
An aqueous aluminum battery comprising:
- an aluminum anode or an aluminum alloy anode having a passivation layer disposed on at least a portion of the surfaces of the aluminum anode or the aluminum alloy anode;
- a cathode;
- and
- an aqueous electrolyte;
- wherein the passivation layer has a thickness of 2 nm to 500 microns.
An aqueous aluminum battery comprising:
- an aluminum anode or an aluminum alloy anode having a passivation layer disposed on at least a portion of the surfaces of the aluminum anode or the aluminum alloy anode;
- a cathode;
- and
- an aqueous electrolyte;
- wherein the passivation layer is not formed in situ in the aqueous aluminum battery.
Dependencies are inferred from the claim text.