Metal-air battery

Patent metadata

Field	Value
Publication number	US-12027687-B2
Application number	US-202217886681-A
Country	US
Kind code	B2
Filing date	Aug 12, 2022
Priority date	Nov 15, 2017
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A metal metal-air battery includes: an anode layer including a metal, a cathode layer spaced apart from the anode layer and including a hybrid conductive material having both electron conductivity and ionic conductivity; and a separator disposed between the anode layer and the cathode layer, wherein the hybrid conductive material includes a channel for metal ion transfer from the anode layer and a channel for electron transfer between the cathode and the anode.

First claim

What is claimed is:

1. A metal-air battery comprising:
an anode layer comprising a metal;
a cathode layer spaced apart from the anode layer and comprising a hybrid conductive material having both electron conductivity and ionic conductivity; and
a separator disposed between the anode layer and the cathode layer,
wherein the cathode layer is a liquid-electrolyte-free electrode and does not comprise carbon,
wherein the cathode layer is porous and has a micron-size lamellar structure, and the micron-size lamellar structure has a meandering shape, and
wherein all spaces and pores in the cathode layer are electrolyte free.

2. The metal-air battery of claim 1 , wherein a ratio of cation conductivity to electron conductivity of the hybrid conductive material is in a range of about 0.01 to about 100.

3. The metal-air battery of claim 1 , wherein the hybrid conductive material has an electron conductivity of about 10 −5 Siemens per centimeter or greater.

4. The metal-air battery of claim 1 , wherein the hybrid conductive material comprises a channel for metal ion transfer and a channel for electron transfer, and
wherein the ratio of the cation conductivity to the electron conductivity of the hybrid conductive material is in a range of about 1 to about 10.

5. The metal-air battery of claim 1 ,
wherein the hybrid conductive material further comprises a reaction product of a metal ion and a gas,
wherein the cathode layer comprises a space, and
wherein the reaction product is disposed in the space.

6. The metal-air battery of claim 5 , wherein the reaction product comprises a lithium oxide, a sodium oxide, or a combination thereof.

7. The metal-air battery of claim 1 , wherein the hybrid conductive material comprises an inorganic material having a perovskite structure, an anti-perovskite structure, a layered structure, a spinel structure, a sodium super ion conductor structure, or a combination thereof.

8. The metal-air battery of claim 7 , wherein the hybrid conductive material comprises lithium manganese oxide, lithium cobalt oxide, lithium manganese nickel oxide, lithium nickel manganese cobalt oxide, lithium nickel oxide, lithium iron phosphate, lithium iron manganese phosphate, or a combination thereof.

9. The metal-air battery of claim 7 , wherein the hybrid conductive material is a solid inorganic compound.

10. The metal-air battery of claim 1 , wherein the cathode layer comprises a porous layer comprising a plurality of pores, and wherein the porous layer comprises the hybrid conductive material.

11. The metal-air battery of claim 10 , wherein the porous layer has porosity of about 90 volume percent or less, based on a total volume of the porous layer.

12. The metal-air battery of claim 10 , wherein the porous layer has a specific surface area of about 100 square meters per gram or greater.

13. The metal-air battery of claim 1 , wherein the cathode layer is an organic-electrolyte-free electrode not comprising an organic electrolyte.

14. The metal-air battery of claim 1 , wherein the metal-air battery further comprises a gas diffusion layer disposed on at least one surface of the cathode layer.

15. The metal-air battery of claim 1 , wherein the separator comprises a solid electrolyte.

16. The metal-air battery of claim 1 , wherein the metal-air battery does not comprise a liquid electrolyte.

17. The metal-air battery of claim 1 , wherein the metal-air battery does not comprise an organic electrolyte.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Heungchan
• Im Dongmin
• Park Hwiyeol
• Lee Hyunchul
• Jeong Huisu
• Lee Junhyeong
• Heo Jin S

Classifications

• H01M4/8605

  Porous electrodes · CPC title

• H01M4/9016

  Oxides, hydroxides or oxygenated metallic salts · CPC title

• H01M2004/8689

  Positive electrodes · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M12/08 Primary

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title