Air electrode of lithium air battery, preparation method of air electrode and lithium air battery

A lithium-air battery and air electrode technology, which is applied in battery electrodes, fuel cell-type half-cells and secondary battery-type half-cells, circuits, etc., to achieve the effects of alleviating polarization phenomenon, simple operation, and suitable for mass production

Inactive Publication Date: 2014-11-26
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the in situ recombination of nitrogen-doped carbon nanotubes and cobalt trioxide on the cathode current collector has not been reported in lithium-air batteries.

Method used

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  • Air electrode of lithium air battery, preparation method of air electrode and lithium air battery
  • Air electrode of lithium air battery, preparation method of air electrode and lithium air battery
  • Air electrode of lithium air battery, preparation method of air electrode and lithium air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]① Weigh 300 mg of ferrocene (analytical pure) and 500 mg of melamine (analytical pure), mix them and grind them thoroughly in a mortar until they are evenly mixed. ② Foam Ni was placed in acetone for ultrasonication, washed with distilled water, then ultrasonicated with ethanol, and washed with distilled water. Put the foamed Ni after ② treatment on the stage, and put it into the constant temperature zone of the reaction chamber. Ar(60cm 3 / min) as the protective gas and ethylene as the carbon source. After reaching the set temperature, slowly add ① into the reaction chamber to obtain the composite structure battery positive electrode of nitrogen-doped carbon nanotube foam Ni network. Use the 2016 button battery case as the battery package, place the lithium sheet, Celgard2340, and the electrode on the negative electrode case of the battery in turn, add some organic electrolyte for lithium-air batteries on the electrode until the electrode and the membrane are complete...

Embodiment 2

[0033] ① Weigh 300 mg of ferrocene (analytical pure) and 500 mg of melamine (analytical pure), mix them and grind them thoroughly in a mortar until they are evenly mixed. ② Foam Ni was placed in acetone for ultrasonication, washed with distilled water, then ultrasonicated with ethanol, and washed with distilled water. Put the foamed Ni after ② treatment on the stage, and put it into the constant temperature zone of the reaction chamber. Ar(60cm 3 / min) as the protective gas and ethylene as the carbon source. After reaching the set temperature, slowly add ① into the reaction chamber to obtain a composite structure of nitrogen-doped carbon nanotube foam Ni network. ③Put 2g of cobalt nitrate and 2g of sodium nitrate into a blend solution containing 100ml of deionized water and ethanol 1:1 (volume ratio) and stir evenly as an electroplating solution. The composite structure obtained in ② is a working electrode, a platinum sheet electrode As the counter electrode, the saturated ...

Embodiment 3

[0035] ① Weigh 300 mg of ferrocene (analytical pure) and 500 mg of melamine (analytical pure), mix them and grind them thoroughly in a mortar until they are evenly mixed. ② Foam Ni was placed in acetone for ultrasonication, washed with distilled water, then ultrasonicated with ethanol, and washed with distilled water. Put the foamed Ni after ② treatment on the stage, and put it into the constant temperature zone of the reaction chamber. Ar(60cm 3 / min) as the protective gas and ethylene as the carbon source. After reaching the set temperature, slowly add ① into the reaction chamber to obtain a composite structure of nitrogen-doped carbon nanotube foam Ni network. ③Put 2g of cobalt nitrate and 2g of sodium nitrate into a blend solution containing 100ml of deionized water and ethanol 1:1 (volume ratio) and stir evenly as an electroplating solution. The composite structure obtained in ② is a working electrode, a platinum sheet electrode As the counter electrode, the saturated ...

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Abstract

The invention provides an air electrode of a lithium air battery. The air electrode comprises a current collector and a catalyst, wherein the catalyst is loaded on the current collector in an in-situ composite manner. The invention further provides a preparation method of the air electrode of the lithium air battery and the lithium air battery which comprises the air electrode. According to the air electrode, the performance of the lithium air battery can be greatly improved.

Description

technical field [0001] The invention relates to the design and preparation technology of a class of air electrodes that can be used in lithium-air batteries, and belongs to the field of chemical power sources. Background technique [0002] The development of large-capacity and high-power energy storage devices is one of the important measures to solve energy crisis, energy security and environmental problems. Whether it is a lead-acid battery, a nickel-metal hydride (cadmium) battery or a lithium-ion battery, the bottleneck of its development is the lack of energy density of the battery. The positive active material (oxygen) of the metal-air battery can be obtained from the outside air instead of being stored in the battery system, so the metal-air battery has a high specific energy. However, since the initial metal-air batteries used aqueous electrolytes, the theoretical and practical battery voltages were low and the molar mass of the anode reactants was large, which limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/88H01M12/08
CPCH01M4/8657H01M4/8867H01M4/9016H01M4/9083H01M12/08Y02E60/10
Inventor 刘昊米睿汪浩梅军严辉刘焕明
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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