Air-metal secondary battery

Patent metadata

Field	Value
Publication number	US-11539055-B2
Application number	US-201414775111-A
Country	US
Kind code	B2
Filing date	Mar 7, 2014
Priority date	Mar 18, 2013
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

An air-metal secondary battery has an electrode including a porous carbon material, wherein the porous carbon material has a specific surface area of 280 m2/g or more, preferably 700 m2/g or more, more preferably 1,500 m2/g or more, as determined by a nitrogen BET method, and the air-metal secondary battery has an average charging voltage of 4.4 V or less, preferably 4.3 V or less, more preferably 4.1 V or less.

First claim

The invention claimed is:

1. An air-metal secondary battery comprising a cathode composed of a porous carbon material, wherein the porous carbon material has a specific surface area greater than 1500 m 2 /g as determined by a nitrogen BET method and comprises an inverse opal-type porous carbon material, the air-metal secondary battery having an average charging voltage of 4.4 V or less, wherein the air-metal secondary battery has an average charging voltage Vch-ave in arange of aSBET+b to cSBET+d, whereinaSBET+b<Vch-ave<cSBET+d, wherein SBET is the specific surface area of the porous carbon material as determined by the nitrogen BET method, wherein a=−2×10 −4 (Vgm −2 ), c=−2×10 −4 (Vgm −2 ), b=4.0 (V), and d=5.0 (V), wherein the porous carbon material has three-dimensional regularity, and the porous carbon material has pores arranged in a pattern forming a crystal structure macroscopically and has a pore distribution with a maximum in the range of 2 nm to 18 nm, and wherein the porous carbon material is derived from a plant and has a pore volume ranging from 0.5 cm 3 /g to 3.96 cm 3 /g as determined by a BHJ method.

2. The air-metal secondary battery according to claim 1 , wherein the porous carbon material is produced by a template method.

3. The air-metal secondary battery according to claim 1 , wherein the pores are macroscopically arranged in a face-centered cubic structure.

4. The air-metal secondary battery according to claim 3 , wherein the pores are macroscopically arranged in a pattern corresponding to a (111)-oriented face-centered cubic structure.

5. The air-metal secondary battery according to claim 2 , wherein the pores are continuously arranged.

6. The air-metal secondary battery according to claim 2 , wherein the pores have a spherical shape or a substantially spherical shape.

7. The air-metal secondary battery according to claim 2 , wherein the porous carbon material is made from a starting material with which a non-graphitizable carbon material or a graphitizable carbon material can be obtained.

8. The air-metal secondary battery according to claim 1 , which comprises an air-lithium secondary battery.

9. The air-metal secondary battery according to claim 1 , which the porous carbon material has a particle size of 50 nm.

10. The air-metal secondary battery according to claim 1 , wherein the porous carbon material has a total pore volume between 1 cm 3 /g and 5 cm 3 /g as determined by a BJH method.

11. The air-metal secondary battery according to claim 1 , wherein the average charging voltage 4.1 V or less.

12. The air-metal secondary battery according to claim 1 , wherein the average charging voltage is 4.0 V or less.

Assignees

• Murata Manufacturing Co

Inventors

• Iida Hironori
• Tabata Seiichiro
• Yamanoi Shun
• Yamada Shinichiro

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M12/08

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

• H01M4/90

  Selection of catalytic material · CPC title

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• C01B32/00

  Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) · CPC title