Cu-Fe bimetallic oxide material as well as preparation method and application thereof

A double metal oxide, cu-fe technology, applied in the field of materials, can solve the problems of inconvenient application, low conductivity, low energy density, etc.

Inactive Publication Date: 2020-12-08
KUNSHAN BAOTRON NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the improvement of negative electrode carbon material technology, on the one hand, additional elements will be introduced in the pretreatment process, which will have an uncertain impact on the stability of the battery. On the other hand, the theoretical capacity of graphene-based materials is only 372mA·h g -1 , compared with metal compounds, the conductivity is not very high, and the low energy density is not convenient for the application in mass production

Method used

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  • Cu-Fe bimetallic oxide material as well as preparation method and application thereof
  • Cu-Fe bimetallic oxide material as well as preparation method and application thereof
  • Cu-Fe bimetallic oxide material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Solution A in the preparation of Cu-Fe-PBAs:

[0058] Dissolve 0.4mmol (0.1317g) of potassium ferricyanide in 20mL of deionized water to form a uniform golden transparent solution A;

[0059] (2) Solution B in the preparation of Cu-Fe-PBAs

[0060] Completely dissolve 1g of polyvinylpyrrolidone in 20mL of deionized water, then add 0.6mmol (0.1499g) of copper sulfate powder and 0.9mmol (0.2647g) of trisodium citrate, and stir evenly to dissolve into a transparent solution B;

[0061] (3) Add solution B to solution A drop by drop through a rubber dropper, and mix completely. After standing for 24 hours, pour off the supernatant, collect the lower precipitate (ie Cu-Fe-PBAs precursor), and precipitate water alcohol After washing, it was vacuum-dried at 60°C and ground into powder.

[0062] (4) Evenly disperse the dry powder in the porcelain boat, put it into the muffle furnace and calcinate at 400°C for 1 hour to obtain CuFeO 8 Complex.

Embodiment 2

[0064] (1) Solution A in the preparation of Cu-Fe-PBAs:

[0065] Dissolve 0.6mmol (0.3951g) of potassium ferricyanide in 20mL of deionized water to form a uniform golden transparent solution A;

[0066] (2) Solution B in the preparation of Cu-Fe-PBAs

[0067] Completely dissolve 1g of polyvinylpyrrolidone in 20mL of deionized water, then add 0.4mmol (0.0999g) of copper sulfate powder and 0.9mmol (0.2647g) of trisodium citrate, and stir evenly to dissolve into a transparent solution B;

[0068] (3) Add solution B to solution A drop by drop through a rubber dropper, and mix completely. After standing for 24 hours, pour off the supernatant, collect the lower precipitate (ie Cu-Fe-PBAs precursor), and precipitate water alcohol After washing, it was vacuum-dried at 60°C and ground into powder.

[0069] (4) Disperse the dried powder evenly in a porcelain boat, put it into a muffle furnace and calcinate at 400°C for 1 hour to obtain CuFe-O 2 Complex.

Embodiment 3

[0071] (1) Solution A in the preparation of Cu-Fe-PBAs:

[0072] Dissolve 0.6mmol (0.3951g) of potassium ferricyanide in 20mL of deionized water to form a uniform golden transparent solution A;

[0073] (2) Solution B in the preparation of Cu-Fe-PBAs

[0074] Completely dissolve 1g of polyvinylpyrrolidone in 20mL of deionized water, then add 0.4mmol (0.0999g) of copper sulfate powder and 0.9mmol (0.2647g) of trisodium citrate, and stir evenly to dissolve into a transparent solution B;

[0075] (3) Add solution B to solution A drop by drop through a rubber dropper, and mix completely. After standing for 24 hours, pour off the supernatant, collect the lower precipitate (ie Cu-Fe-PBAs precursor), and precipitate water alcohol After washing, it was vacuum-dried at 60°C and ground into powder.

[0076] (4) Evenly disperse the dry powder in the porcelain boat, put it into the muffle furnace and calcinate at 500°C for 1h to obtain CuFe-O 2 Complex.

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Abstract

The invention discloses a Cu-Fe bimetallic oxide material as well as a preparation method and application thereof. The method for preparing the CuFe bimetallic oxide material comprises the following steps: (1) mixing ferricyanate with a solvent to obtain a first solution, mixing copper salt, a complexing agent, a stabilizer and a solvent to obtain a second solution; (2) adding the second solutioninto the first solution and reacting to obtain a reaction product; (3) carrying out solid-liquid separation on the reaction product, and collecting a solid product; and (4) calcining the solid productto obtain the Cu-Fe bimetallic oxide material. The Cu-Fe bimetallic oxide material has a porous structure and a large number of mesopores which are connected with one another and a large specific surface area, and has stable coulombic efficiency, high theoretical capacity and stable cycle characteristics.

Description

technical field [0001] The present invention relates to the field of materials, in particular, the present invention relates to Cu-Fe double metal oxide material and its preparation method and application Background technique [0002] With the continuous growth of energy demand and the increasing awareness of environmental crisis, people are more and more keen on developing high-efficiency and environment-friendly energy storage technologies. At present, lithium-ion batteries (LIBs) have become the main power source of portable electronic devices due to their advantages of high energy, long life, no memory effect, and environmental friendliness. decline phenomenon. For batteries tested at room temperature, the capacity decays faster, which means that the battery quality is relatively poor. Therefore, high capacity and cycle performance are important indicators to measure its quality. However, commercial negative electrode battery materials usually use carbon materials as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/52H01M10/0525
CPCH01M4/483H01M4/523H01M10/0525H01M2004/027Y02E60/10
Inventor 于刘涛齐士博吕豪杰
Owner KUNSHAN BAOTRON NEW ENERGY TECH CO LTD
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