Metal-air battery

Patent metadata

Field	Value
Publication number	US-2019148803-A1
Application number	US-201816154944-A
Country	US
Kind code	A1
Filing date	Oct 9, 2018
Priority date	Nov 15, 2017
Publication date	May 16, 2019
Grant date	—

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 a ratio of cation conductivity to electron conductivity of the hybrid conductive material is in a range of about 0.01 to about 100.

2 . 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.

3 . 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.

4 . The metal-air battery of claim 3 , 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.

6 . The metal-air battery of claim 5 , wherein the cathode layer comprises a space, and wherein the reaction product is disposed in the space.

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

8 . 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.

9 . The metal-air battery of claim 8 , 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.

10 . The metal-air battery of claim 8 , wherein the hybrid conductive material is a solid inorganic compound.

11 . The metal-air battery of claim 1 , wherein the cathode layer comprises a space, and wherein the spaces is an electrolyte-free region.

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

13 . The metal-air battery of claim 12 , wherein the porous layer has porosity of about 90 volume percent or less, based on a total volume of the porous layer.

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

15 . The metal-air battery of claim 12 , wherein the porous layer has a lamellar structure.

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

17 . The metal-air battery of claim 16 , wherein the cathode layer consists of the hybrid conductive material.

18 . The metal-air battery of claim 1 , wherein the cathode layer does not comprise carbon.

19 . 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.

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

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

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

23 . A metal-air battery comprising:
a cathode layer comprising a hybrid conductive material having both ionic conductivity and electron conductivity; an anode layer comprising a metal; and a separator between the anode layer and the cathode layer and comprising a solid electrolyte.

24 . The metal-air battery of claim 23 , wherein the hybrid conductive material is a solid inorganic compound comprising a metal element, and
wherein the cathode layer does not comprise an organic electrolyte.

25 . The metal-air battery of claim 24 , wherein the cathode layer consists of the hybrid conductive material.

26 . The metal-air battery of claim 23 , 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.

27 . The metal-air battery of claim 26 , 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.

28 . The metal-air battery of claim 23 , wherein the hybrid conductive material comprises a lithium-based oxide, a sodium-based oxide, or a combination thereof.

29 . The metal-air battery of claim 28 , 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.

30 . The metal-air battery of claim 29 , 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.

31 . The metal-air battery of claim 23 , wherein the cathode layer comprises a space, and wherein the space is an electrolyte-free region.

32 . The metal-air battery of claim 31 , wherein the cathode layer further comprises a reaction product of a metal ion and a gas disposed in the space.

33 . The metal-air battery of claim 23 , wherein the cathode layer comprises a porous layer comprising a pore, and wherein the porous layer comprises the hybrid conductive material.

34 . The metal-air battery of claim 23 , wherein the cathode layer does not comprise a carbon-containing material.

35 . The metal-air battery of claim 23 , wherein the metal-air battery further comprises a gas diffusion layer disposed on at least one surface of the cathode layer.

Assignees

• Samsung Electronics Co Ltd

Inventors

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

Classifications

• 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

• H01M4/9016

  Oxides, hydroxides or oxygenated metallic salts · CPC title

• H01M2004/8689

  Positive electrodes · CPC title

• H01M4/8605

  Porous electrodes · CPC title