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Modified three-dimensional framework material with lithium-philic copper-nickel bimetallic layer and its preparation method and application

A bimetallic layer, three-dimensional skeleton technology, applied in the field of nanomaterials and electrochemistry, can solve the problems of complex preparation process raw materials, reduce the possibility and other problems, and achieve the effects of stable circulation, mild conditions and simple operation

Active Publication Date: 2022-03-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the reported current collectors with three-dimensional lithiophilic properties require complex preparation processes or expensive raw materials, which seriously reduces the possibility of such strategies in practical applications.

Method used

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  • Modified three-dimensional framework material with lithium-philic copper-nickel bimetallic layer and its preparation method and application
  • Modified three-dimensional framework material with lithium-philic copper-nickel bimetallic layer and its preparation method and application
  • Modified three-dimensional framework material with lithium-philic copper-nickel bimetallic layer and its preparation method and application

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preparation example Construction

[0025] The present invention provides a method of preparing the above-mentioned translucent copper nickel bipolar layer modified three-dimensional skeleton material, including the following steps:

[0026] (1) Mix the copper sulfate, nickel sulfate, boric acid with deionized water to obtain an electroplating solution;

[0027] (2) The obtained plating solution is used as the electrolyte, and the foam material is used as the working electrode, and the electroplating process is performed by the three electrode and the electrochemical workstation to obtain a modified three-dimensional bilateral material having a lithium copper nickel bis metal layer.

[0028] The present invention mixes copper sulfate, nickel sulfate, boric acid with deionized water to obtain an electroplating solution. The present invention can be used for foam nickel known to those skilled in the art. In the present invention, the molar concentration of the copper sulfate, nickel sulfate, and aqueous acid solution ...

Embodiment 1

[0040] Preparation method with lithium lithium copper nickel bimetal layer modified three-dimensional skeleton material, including the following steps:

[0041] 1) 2.5 mmol of copper sulfate, 50 mmol of nickel sulfate, 25 mmol of boric acid was dissolved in 50 ml of deionized water at 30 ° C for 20 minutes to dissolve the plating solution;

[0042] 2) At step 1) The plated liquid obtained as the electrolyte, using the three electrode and the electrochemical workstation, the electroplating voltage is set to 0.75V, and the plating time is set to 400 s;

[0043] 3) The product obtained in step 2) was taken out, and twice was washed twice with deionized water and anhydrous ethanol, and the three-dimensional bilayer material having a lithium copper nickel bilayer layer was obtained.

[0044] X-ray diffraction (XRD) analysis of transal lithium copper nickel bimetal layer modified three-dimensional skeleton material, the resulting X-ray diffraction spectrum figure 1 Indicated. Depend on ...

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Abstract

The invention relates to the technical field of nanometer materials and electrochemistry, in particular to a modified three-dimensional framework material with a lithium-philic copper-nickel double-metal layer, and a preparation method and application thereof. The preparation method of the modified three-dimensional framework material having a lithium-philic copper-nickel bimetallic layer is characterized in that it comprises the following steps: (1) adding copper sulfate, nickel sulfate, and boric acid to deionized water to obtain an electroplating solution; (2) The obtained electroplating solution is used as the electrolyte, and the nickel foam material is used as the working electrode, and the three-electrode and electrochemical workstation are used to perform the electroplating process to obtain a three-dimensional modified framework material with a lithium-philic copper-nickel bimetallic layer. The invention provides a preparation method for the above-mentioned modified three-dimensional framework material with a lithium-philic copper-nickel bimetallic layer. This method is simple in operation, short in synthesis time, mild in conditions, low in cost and can be prepared on a large scale, and meets the requirements of green chemistry. Conducive to market promotion.

Description

Technical field [0001] The present invention relates to the field of nanomaterials and electrochemical techniques, and in particular, to a modified three-dimensional skeleton material having a lithium copper nickel bis metal layer and a preparation method thereof. Background technique [0002] In recent years, people's requirements for energy storage devices have increased sharply due to the rapid development of mobile electronic equipment and electric vehicles. Currently, traditional commercial lithium-ion batteries are graphite (372mAh g) -1 ) Is a negative electrode, its development is close to its theoretical capacity. However, 300-800WH kg -1 The new architecture is a requirement for the next generation batteries, and it is also an important strategic goal to address the global energy challenge. Therefore, it only relies far to meet the needs of today's society. Metal lithium (Li) due to very high theoretical specific capacity (3860mAh G -1 ), It is 10 times that of traditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/66H01M4/80H01M4/134H01M10/052C25D7/06
CPCH01M4/661H01M4/662H01M4/667H01M4/808H01M4/134H01M10/052C25D7/0614Y02E60/10
Inventor 徐林邹文渊麦立强
Owner WUHAN UNIV OF TECH
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