Non-aqueous lithium-air battery

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...

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

Images