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Carbon-based Prussian blue analogue composite material, preparation method and applications thereof

A technology of Prussian blue and composite materials, which is applied to carbon-based Prussian blue analog composite materials and the fields of their preparation and application, can solve the problems of difficulty in improving the stability and utilization rate of Prussian blue materials, complicated preparation methods, and difficulty in batch preparation. , to achieve the effect of high ion adsorption capacity and energy storage capacity, simple method and improved stability

Active Publication Date: 2019-12-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to improve the stability and utilization of Prussian blue materials by doping methods, and for traditional composite methods, the preparation method is too complicated and difficult to prepare in batches

Method used

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  • Carbon-based Prussian blue analogue composite material, preparation method and applications thereof
  • Carbon-based Prussian blue analogue composite material, preparation method and applications thereof
  • Carbon-based Prussian blue analogue composite material, preparation method and applications thereof

Examples

Experimental program
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Embodiment 1

[0036] The present embodiment provides a kind of preparation method of Prussian blue / carbon nanotube material, specifically as follows:

[0037] Take 0.1 g of iron-containing carbon nanotubes, soak them in 50 mL of 0.1 mol / L potassium ferrocyanide solution for 20 hours, then slowly add a certain amount of hydrochloric acid to the solution to make the pH of the solution = 0, take it out after 8 hours of reaction, After repeated washing with deionized water, the Prussian blue / carbon nanotube material can be obtained by drying in a blast drying oven.

Embodiment 2

[0039] The present embodiment provides a kind of preparation method of Prussian blue / carbon nanotube material, specifically as follows:

[0040] Take 0.1 g of iron-containing carbon nanotubes, soak them in 50 mL of 0.1 mol / L potassium ferrocyanide solution for 144 hours, then slowly add a certain amount of hydrochloric acid to the solution to make the pH of the solution = 4, take it out after 48 hours of reaction, After repeated washing with deionized water, the Prussian blue / carbon nanotube material can be obtained by drying in a blast drying oven.

Embodiment 3

[0042] The present embodiment provides a kind of preparation method of Prussian blue / carbon nanotube material, specifically as follows:

[0043] Take 0.2 g of iron-containing carbon nanotubes, soak them in 100 mL of 0.2 mol / L potassium ferrocyanide solution for 20 hours, then slowly add a certain amount of hydrochloric acid to the solution to make the pH of the solution = 0, take it out after 8 hours of reaction, After repeated washing with deionized water, the Prussian blue / carbon nanotube material can be obtained by drying in a blast drying oven.

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Abstract

The invention discloses a carbon-based Prussian blue analogue composite material preparation method, which comprises: soaking a carbon material containing a transition metal element in a compound aqueous solution containing metal cyanide, adding an acid solution into the solution after the soaking, carrying out a reaction, carrying out water washing after completing the reaction, and drying to obtain the carbon-based Prussian blue analogue composite material. According to the present invention, the preparation method is simple; compared with the traditional Prussian blue analogue material, thePrussian blue analogue material of the present invention has advantages of high capacity, excellent electron transmission capability and excellent stability; the Prussian blue analogue in the synthesized composite material is stably and uniformly distributed inside and outside, and has small particles so as to enhance the utilization rate and the electrochemical performance of the Prussian blue analogues, and the carbon material as the carrier can greatly improve the conductivity of electrodes, such that the product as the electrode material has extremely high capacity to ions; and with the application of the product as a battery or a capacitor, the material has high capacity in energy storage and ion adsorption, and can be widely applied to the fields of energy storage, ion adsorption and the like.

Description

technical field [0001] The invention relates to a carbon-based Prussian blue analog composite material and its preparation method and application. The material prepared by the invention can be used for ion adsorption in water bodies and energy storage of batteries or capacitors. Background technique [0002] Prussian blue analogues have the advantages of excellent reversibility, high stability, easy preparation, low cost and environmental friendliness, etc., from simple as dyes and chromogens, to hydrogen storage, biosensing, seawater desalination, nuclear power plants Adsorbents for wastewater, electrochemical electrode modification materials and electrochromogenic agents have been applied in more and more fields. Especially in recent years, due to the huge three-dimensional ion channels of Prussian blue analogues, ions can be intercalated quickly; the coordination stability constants of metals and C≡N are extremely high, which can maintain the stability of the three-dimens...

Claims

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Application Information

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IPC IPC(8): C01C3/12C01C3/08C01B32/372C01B32/168H01G9/042H01G9/145B01J20/20B01J20/02C02F1/28
CPCC01C3/12C01C3/08C01B32/168C01B32/372H01G9/145H01G9/042B01J20/20B01J20/0259C02F1/283C02F1/281C01P2004/80B01J2220/4806B01J2220/42
Inventor 刘建允史威胡彬朱国栋聂鹏飞杨洪梅
Owner DONGHUA UNIV