High energy density aluminum battery

Patent metadata

Field	Value
Publication number	US-9466853-B2
Application number	US-201113247417-A
Country	US
Kind code	B2
Filing date	Sep 28, 2011
Priority date	Sep 30, 2010
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

Compositions and methods of making are provided for a high energy density aluminum battery. The battery comprises an anode comprising aluminum metal. The battery further comprises a cathode comprising a material capable of intercalating aluminum or lithium ions during a discharge cycle and deintercalating the aluminum or lithium ions during a charge cycle. The battery further comprises an electrolyte capable of supporting reversible deposition and stripping of aluminum at the anode, and reversible intercalation and deintercalation of aluminum or lithium at the cathode.

First claim

What is claimed is:

1. A battery comprising:
an anode comprising aluminum metal;
a cathode comprising spinel AIMn 2 O 4 ; and
an electrolyte, wherein the electrolyte is an ionic liquid comprising an aluminate selected from the group consisting of alkylimidazolium aluminates, alkylpyridinium aluminates, alkylfluoropyrazolium aluminates, alkyltriazolium aluminates, aralkylammonium aluminates, alkylalkoxyammonium aluminates, aralkylphosphonium aluminates, aralkylsulfonium aluminates, and mixtures thereof.

2. The battery of claim 1 , wherein the battery is a secondary battery.

3. The battery of claim 2 , wherein the secondary battery maintains a discharge capacity of at least 50% of an initial discharge capacity after 50 discharge cycles.

4. The battery of claim 1 , wherein the anode is an aluminum metal alloy.

5. The battery of claim 4 , wherein the aluminum metal alloy comprises an element selected from the group consisting of: copper, magnesium, manganese, silicon, titanium, zinc, and mixtures thereof.

6. The battery of claim 1 , wherein the aluminate is ethylmethylimidazolium tetrachloroaluminate having a molar ratio of aluminum chloride to EMIC greater than 1:1.

7. The battery of claim 6 , wherein the electrolyte further comprises an alkali metal halide additive.

8. The battery of claim 7 , wherein the alkali metal halide additive is selected from the group consisting of: NaCl, KCl, NH 4 Cl, and mixtures thereof.

9. The battery of claim 1 , wherein the ionic liquid comprises ethylmethylimidazolium tetrachloroaluminate.

10. A method of making a battery comprising:
providing an anode comprising aluminum metal;
providing a cathode comprising spinel AIMn 2 O 4 ; and
providing an electrolyte, wherein the electrolyte is an ionic liquid comprising an aluminate selected from the group consisting of alkylimidazolium aluminates, alkylpyridinium aluminates, alkylfluoropyrazolium aluminates, alkyltriazolium aluminates, aralkylammonium aluminates, alkylalkoxyammonium aluminates, aralkylphosphonium aluminates, aralkylsulfonium aluminates, and mixtures thereof.

11. The method of claim 10 , wherein the aluminate is ethylmethylimidazolium tetrachloroaluminate having a molar ratio of aluminum chloride to EMIC of greater than 1:1.

12. The method of claim 10 , wherein the electrolyte further comprises an alkali metal halide additive.

13. The method of claim 11 , wherein the electrolyte further comprises an alkali metal halide additive.

14. The battery of claim 1 , wherein the cathode further comprises a carbon material and a binder.

15. The battery of claim 14 , wherein the cathode comprises:
approximately 50-90% of the spinel AlMn 2 O 4 ;
approximately 1-20% of the binder; and
approximately 1-40% of the carbon material.

16. The battery of claim 15 , wherein the carbon material is carbon black.

17. The battery of claim 1 , wherein the cathode comprises an active material, the active material being the spinel AlMn 2 O 4 .

18. The battery of claim 17 , wherein the cathode further comprises a carbon material and a binder.

19. The battery of claim 18 , wherein the cathode comprises:
approximately 50-90% of the spinel AlMn 2 O 4 as the active material of the cathode;
approximately 1-20% of the binder; and
approximately 1-40% of the carbon material.

20. The battery of claim 19 , wherein the carbon material is carbon black.

Assignees

• Brown Gilbert M
• Paranthaman Mariappan Parans
• Dai Sheng
• Dudney Nancy J
• Manthiram Arumugan
• Mcintyre Timothy J
• Sun Xiao-Guang
• Liu Hansan
• Ut Battelle Llc
• Univ Texas

Inventors

• Brown Gilbert M
• Paranthaman Mariappan Parans
• Dai Sheng
• Dudney Nancy J
• Manthiram Arumugan
• Mcintyre Timothy J
• Sun Xiao-Guang
• Liu Hansan

Classifications

• Y02E60/122

  Cross-Sectional Technologies · mapped topic

• H01M10/054 Primary

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M4/50

  of manganese · CPC title

• Y10T29/49108

  Electric battery cell making · CPC title