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Non-aqueous lithium-air battery

A lithium-air battery, air cathode technology, applied in non-aqueous electrolytes, batteries, battery electrodes, etc., can solve problems such as not improving capacity

Active Publication Date: 2017-09-19
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, despite the increased surface area, the cathode surface becomes composed of insulating Li 2 o 2 covered by the accumulation of products, leading to the termination of the discharge reaction
So it's not a final solution to improving capacity

Method used

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  • Non-aqueous lithium-air battery
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  • Non-aqueous lithium-air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Electrolyte for the cathode compartment: 0.1 in N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide (DEME-TFSA) M K 2 (Kanto Corporation)

[0065] Cathode: carbon paper (TGP-H-120, thickness = 0.36 mm, Toray Industries)

Embodiment 2

[0067] Electrolyte for cathode compartment: 0.1M KO in DEME-TFSA 2

[0068] Cathode: carbon paper (TGP-H-30, thickness = 0.11 mm, Toray Industries)

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Abstract

The invention relates to a non- aqueous lithium-air battery. A lithium-air electrochemical cell is provided. The battery comprises: an anode compartment; a cathode compartment; and a lithium ion conductive membrane separating the anode compartment from the cathode compartment. The anode compartment comprises an anode having lithium, a lithium alloy or a porous material capable of adsorption and release of lithium and a lithium ion electrolyte, while the cathode compartment comprises an air electrode, an ionic liquid capable of supporting the reduction of oxygen and a dissolved concentration of potassium superoxide. A lithium ion concentration in the cathode compartment is low in comparison to the concentration of potassium ion.

Description

technical field [0001] This embodiment is directed to a lithium-air battery with high capacity and cycle efficiency. Background technique [0002] Lithium-ion technology dominates the energy market for small electronic devices and even hybrid electric vehicles. However, lithium-ion batteries have insufficient theoretical capacity as a power source for future large-capacity generation energy capable of running electric vehicles. [0003] Metal-air batteries have been investigated as a generation of advanced high-capacity energy sources for their potential to power motor vehicles on a sustained basis comparable to current hydrocarbon-based combustion engines. In a metal-air battery, the metal of the anode is oxidized and the resulting cations travel to the cathode region of a matrix comprising a porous material such as carbon, where, for example, oxygen is reduced and the reduced products in the form of oxides or peroxides react with the metal cations combine to form dischar...

Claims

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Application Information

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IPC IPC(8): H01M12/06H01M4/86
CPCH01M4/86H01M12/06H01M2300/0014H01M2300/0068H01M12/08H01M4/382H01M2220/20Y02E60/10
Inventor 武市宪典
Owner TOYOTA JIDOSHA KK
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