Lithium air battery

A lithium-air battery and lithium-ion technology, applied in the direction of fuel cells, battery electrodes, hybrid battery components, etc., can solve problems such as difficult charging reactions, lack of electronic conductivity of lithium peroxide, and hinder the cycle characteristics of lithium-air batteries. Improvement of cycle characteristics and effect of lowering charge potential

Inactive Publication Date: 2019-03-05
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of electronic conductivity of lithium peroxide, it is difficult to carry out the charging reaction
This hinders the improvement of the cycle characteristics of the lithium-air battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Ketjen Black (manufactured by Lion King Corporation) powder was used as the carbon material. As the binder, powder of PTFE (manufactured by Daikin Industry Co., Ltd.) was used. The carbon material, the powder of cuprous iodide (CuI), and the binder were kneaded using an ethanol solvent in a mass ratio of 40:15:10 to obtain a mixture. The mixture is rolled by rolling to produce electrode sheets. The obtained electrode sheet was cut to obtain a positive electrode (positive electrode layer).

[0098] LiTFSA (lithium bistrifluoromethanesulfonamide; manufactured by Kishida Chemical Co., Ltd.) was mixed and dissolved in tetraglyme (TEGDME; manufactured by Kishida Chemical Co., Ltd.) at a concentration of 1 mol / liter. The mixed solution is stirred for 24 hours in a dry gas atmosphere with a dew point of -50 degrees or less to obtain a non-aqueous electrolyte.

[0099] As the diaphragm, a glass fiber diaphragm is prepared. A SUS304 mesh (manufactured by Nilac Co., Ltd.) as a cur...

Embodiment 2

[0101] Except that CuBr powder was used instead of CuI powder, the same method as in Example 1 was used to produce a lithium air battery.

Embodiment 3

[0103] Except for using CuSCN powder instead of CuI powder, the same method as in Example 1 was used to produce a lithium air battery.

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Abstract

The invention provides a technology used for reducing charging level and improves cycling feature in a lithium air battery. The lithium air battery (1) comprises a negative electrode (12) configured to occlude and release a lithium ion; a positive electrode (13) configured to use oxygen in air as a positive electrode active material; a nonaqueous lithium ion conductor (14) disposed between the negative electrode (12) and the positive electrode (13); and a copper compound which contains no neutral ligand and is contained in the positive electrode (13) as oxygenation catalyst.

Description

Technical field [0001] The present disclosure relates to lithium air batteries. Background technique [0002] A lithium-air battery refers to a battery that uses oxygen in the air as a positive electrode active material, and uses a metal or compound capable of occluding and releasing lithium ions as a negative electrode active material. Li-air batteries have the advantages of high energy density, easy miniaturization, and easy weight reduction. Therefore, the lithium-air battery is attracting attention as a battery having an energy density that exceeds that of the lithium-ion battery currently considered to be the highest energy density. [0003] In lithium-air batteries, lithium peroxide is deposited on the positive electrode through a discharge reaction, and the lithium peroxide is decomposed through a charge reaction. Since lithium peroxide lacks electronic conductivity, it is difficult to perform a charging reaction. This hinders the improvement of the cycle characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/96H01M8/0234H01M12/08
CPCH01M4/8605H01M4/9083H01M4/96H01M8/0234H01M12/08H01M4/9016H01M4/9075Y02E60/10Y02E60/50H01M2004/8689H01M12/02
Inventor 森石麻纱子大冢友
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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