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A preparation method of a flexible composite material, an aqueous nickel-iron battery electrode comprising the flexible composite material, and a battery

A composite material and flexible technology, applied in battery electrodes, nickel storage batteries, alkaline storage batteries, etc., can solve the problems of unsatisfactory electrochemical performance and uneven dispersion, so as to improve the rate performance, energy density and structure The effect of stability and conductivity

Active Publication Date: 2021-02-12
深圳汽航院科技有限公司
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Problems solved by technology

However, since the additives are micron-sized particles and are added by physical mixing, they cannot be uniformly dispersed in the electrode material, so the effect of improving the electrochemical performance is not ideal.

Method used

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  • A preparation method of a flexible composite material, an aqueous nickel-iron battery electrode comprising the flexible composite material, and a battery

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Embodiment Construction

[0023]After detailed description of the embodiments of the present invention by way of examples below in conjunction with the accompanying drawings, other features, characteristics and advantages of the present invention will be more apparent.

[0024]figure 1Preparation of flexible FeS provided by embodiments of the present inventionx / InSx / CF composite method flow diagram. Such asfigure 1As shown, the embodiment of the present invention provides the preparation of flexible FeSx / InSx / CF composite material method, where 0

[0025]Step 1: Dissolve iron acetylacetonate and indium acetylacetonate in an organic solvent;

[0026]In one embodiment, iron acetylacetonate and indium acetylacetonate are dissolved in an organic solvent in a molar ratio of 90:10, 85:15 or 80:20. Ethanol is used as the organic solvent.

[0027]Step 2: Drop the above mixed solution onto the carbon fiber and dry it in a 60 degree oven to remove the organic solvent;

[0028...

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Abstract

The invention relates to a preparation method of a flexible composite material, an aqueous nickel-iron battery electrode containing the flexible composite material, and a battery; wherein, the preparation method of the flexible composite material comprises the following steps: step 1, combining iron acetylacetonate and acetylacetone Indium is dissolved in an organic solvent; step 2, the above mixed solution is added dropwise on filter paper, and dried in a 60-degree oven to remove the organic solvent; step 3, the obtained material is passed through argon (Ar) in a tube furnace Calcined to obtain flexible FeO x / InO x / CF composites. Step 4, the obtained FeO x / InO x / CF material in the presence of hydrogen sulfide (H 2 S) calcined in a gas tube furnace to obtain flexible FeS x / InS x / CF composites. The preparation method of the present invention has a simple process, and the prepared material is green and environment-friendly, and effectively suppresses the passivation of the electrode and the side reaction of hydrogen evolution, exerts high mass specific capacity and coulombic efficiency, and can meet the actual application requirements.

Description

Technical field[0001]The invention relates to the preparation of flexible FeSx / InSx / CF composite material technology, in particular to a method for preparing flexible composite materials, water-based nickel-iron battery electrodes containing the flexible composite materials, and batteriesBackground technique[0002]A nickel-iron battery is a rechargeable battery. Its positive electrode material can be nickel hydroxide, the negative electrode material can be elemental iron, and the electrolyte is potassium hydroxide or potassium hydroxide plus a small amount of lithium hydroxide. This battery can withstand a certain degree of use accidents (including overcharging, overdischarging, short circuit, overheating), and can still maintain a long life after suffering the above-mentioned damage. Therefore, this rechargeable battery has broad application prospects in the field of large-scale energy storage. However, this battery also has obvious defects, such as low Coulomb efficiency, poor low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M10/30
CPCH01M4/362H01M4/5815H01M4/5835H01M10/30H01M2004/021Y02E60/10
Inventor 雷丹妮张瑞锋
Owner 深圳汽航院科技有限公司
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