Lithium air battery

Patent metadata

Field	Value
Publication number	US-11283124-B2
Application number	US-202016993370-A
Country	US
Kind code	B2
Filing date	Aug 14, 2020
Priority date	Dec 23, 2019
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A lithium air battery including: a lithium air cell including a cathode configured to use oxygen as cathode active materials, an anode capable of storing and releasing lithium ions, and an electrolyte disposed between the cathode and the anode; and a water vapour supply unit including a basic metal compound and water, wherein the water vapour supply unit is configured to supply water to the cathode of the lithium air cell.

First claim

What is claimed is:

1. A lithium air battery comprising:
a lithium air cell comprising
a cathode configured to use oxygen and water as a cathode active material,
an anode capable of storing and releasing lithium ions, and
an electrolyte disposed between the cathode and the anode; and

a water vapor supply unit comprising a basic metal compound and water,
wherein the water vapor supply unit is configured to supply water to the cathode of the lithium air cell.

2. The lithium air battery of claim 1 , wherein the basic metal compound comprises an alkaline metal or an alkaline earth metal.

3. The lithium air battery of claim 1 , wherein the basic metal compound comprises NaOH, CaO, Ca(OH) 2 , MgO, or Mg(OH) 2 .

4. The lithium air battery of claim 1 , wherein a concentration of the basic metal compound in a solution including the basic metal compound in the water vapor supply unit is about 0.1 grams per liter to about 1 gram per liter.

5. The lithium air battery of claim 1 , wherein a solution including the basic metal compound in the water vapor supply unit has a pH of 9 to 14.

6. The lithium air battery of claim 1 , wherein the water vapor supply unit is configured to supply water vapor from which an acidic impurity is removed.

7. The lithium air battery of claim 6 , wherein the acidic impurity comprises carbon dioxide.

8. The lithium air battery of claim 1 , further comprising
a gas storage container in which the lithium air cell and the water vapor supply unit are located, and
wherein the gas storage container contains an atmosphere comprising oxygen.

9. The lithium air battery of claim 1 , comprising
a gas storage container containing an atmosphere comprising oxygen in which the lithium air cell is disposed, and
wherein the water vapor supply unit is in fluid communication with the gas storage container to supply water vapor to the gas storage container.

10. The lithium air battery of claim 1 , wherein
the water vapor supply unit comprises a membrane on a surface of the lithium air cell, and
the membrane comprises a solution including the basic metal compound.

11. The lithium air battery of claim 10 , wherein the membrane is located on the cathode of the lithium air cell.

12. The lithium air battery of claim 10 , wherein the membrane comprises a nonwoven fabric.

13. The lithium air battery of claim 1 , comprising
a gas storage container having an atmosphere comprising oxygen in which the water vapor supply unit is located, and
wherein the gas storage container is in fluid communication with the lithium air cell and is configured to supply water vapor and oxygen to the lithium air cell.

14. The lithium air battery of claim 13 , wherein the gas storage container is configured to supply water vapor and oxygen from the gas storage container to the cathode of the lithium air cell.

15. The lithium air battery of claim 1 , wherein the cathode comprises a porous conductive material.

16. The lithium air battery of claim 1 , wherein the anode comprises lithium.

17. The lithium air battery of claim 1 , wherein the electrolyte comprises a solid electrolyte.

18. The lithium air battery of claim 1 , wherein the electrolyte comprises a liquid electrolyte.

19. The lithium air battery of claim 18 , wherein the liquid electrolyte comprises an organic electrolyte.

20. The lithium air battery of claim 1 , wherein the electrolyte comprises an aqueous electrolyte.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Wonsung
• Kim Mokwon
• Kim Taeyoung
• Park Jungock
• Lee Hyunpyo
• Choi Kyounghwan

Classifications

• H01M8/0687

  Reactant purification by the use of membranes or filters · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M8/04089

  of gaseous reactants · CPC title

• H01M4/8867

  Vapour deposition · CPC title