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Preparation method of molecular metal phthalocyanine (phthalocyanine)/graphene (graphene oxide) composite material

A metal phthalocyanine and composite material technology, which can be used in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. Effect

Inactive Publication Date: 2020-12-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low-power supercapacitors are difficult to meet the needs of electric vehicles and hybrid vehicles, so it is imperative to develop high-power supercapacitors
[0003] The insufficient energy density of supercapacitors (about one-third of that of lithium-ion batteries) severely limits their practical application

Method used

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  • Preparation method of molecular metal phthalocyanine (phthalocyanine)/graphene (graphene oxide) composite material
  • Preparation method of molecular metal phthalocyanine (phthalocyanine)/graphene (graphene oxide) composite material
  • Preparation method of molecular metal phthalocyanine (phthalocyanine)/graphene (graphene oxide) composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 0.2 g of iron phthalocyanine in 20 mL of sulfuric acid, adjust the pH to neutral by diluting in an ice-bath environment, and dry at 60° C. to obtain amorphous iron phthalocyanine.

[0031] Take 0.2 g of graphene oxide powder, add 20 mL of concentrated sulfuric acid with a concentration of 98%, and obtain a uniformly dispersed graphene oxide sulfuric acid dispersion by ultrasonication for 30 minutes.

[0032] Add 0.2 g of iron phthalocyanine powder to the graphene sulfuric acid dispersion while stirring, ultrasonically treat for 30 minutes and then stir for 12 hours to obtain an iron phthalocyanine / graphene oxide composite dispersion, add water to wash until neutral, and obtain a sample.

[0033] Dry at 60° C. for 12 hours in a blast drying oven to obtain a black sample powder.

[0034] in figure 1 It is the SEM image of the purified iron phthalocyanine, which obviously changes from a crystal structure to an amorphous structure, figure 2 There is a Mapping im...

Embodiment 2

[0036] Dissolve 0.2 g of nickel phthalocyanine in 20 mL of sulfuric acid, adjust the pH to neutral by diluting in an ice-bath environment, and dry at 60° C. to obtain amorphous nickel phthalocyanine.

[0037] Take 0.2 g of graphene oxide powder, add 20 mL of concentrated sulfuric acid with a concentration of 98%, and obtain a uniformly dispersed graphene oxide sulfuric acid dispersion by ultrasonication for 30 minutes.

[0038] Add 0.2 g of nickel phthalocyanine powder to the graphene sulfuric acid dispersion while stirring, ultrasonically treat for 30 minutes and then stir for 12 hours to obtain a nickel phthalocyanine / graphene oxide composite material dispersion, add water and wash until neutral, and obtain a sample.

[0039] Dry at 60° C. for 12 hours in a blast drying oven to obtain a black sample powder.

Embodiment 3

[0041] Dissolve 0.2 g of cobalt phthalocyanine in 20 mL of sulfuric acid, adjust the pH to neutral by diluting in an ice-bath environment, and dry at 60° C. to obtain amorphous cobalt phthalocyanine.

[0042] Take 0.2 g of graphene oxide powder, add 20 mL of concentrated sulfuric acid with a concentration of 98%, and obtain a uniformly dispersed graphene oxide sulfuric acid dispersion by ultrasonication for 30 minutes.

[0043] Add 0.2 g of cobalt phthalocyanine powder to the graphene sulfuric acid dispersion while stirring, ultrasonically treat for 30 minutes and then stir for 12 hours to obtain a cobalt phthalocyanine / graphene oxide composite material dispersion, add water to wash until neutral, and obtain a sample.

[0044] Dry at 60° C. for 12 hours in a blast drying oven to obtain a black sample powder.

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Abstract

The invention discloses a preparation method of a metal phthalocyanine (phthalocyanine) / graphene (graphene oxide) composite material, and relates to an application of the metal phthalocyanine (phthalocyanine) / graphene (graphene oxide) composite material in a supercapacitor, and the preparation method comprises the following steps: dispersing graphene (graphene oxide); adding metal phthalocyanine (phthalocyanine) into the graphene oxide dispersion liquid, ultrasonically stirring, washing and drying; and carrying out heat treatment on the obtained sample. The method is simple and convenient, easy to operate and capable of achieving large-area production. The metal phthalocyanine (phthalocyanine) / graphene (graphene oxide) composite material prepared by adopting the method is non-toxic and environment-friendly, and an assembled supercapacitor has relatively large specific capacitance and excellent cycling stability.

Description

technical field [0001] The invention relates to a method for preparing a positive electrode material of a supercapacitor, in particular to a method for preparing a molecular-level metal phthalocyanine (phthalocyanine) / graphite (graphene oxide) composite material, and belongs to the technical field of supercapacitor materials. Background technique [0002] With the development of science and technology, problems such as energy crisis and environmental pollution are becoming more and more serious, and it is imminent to solve the development and storage of new green and sustainable energy. As an efficient energy storage device, supercapacitors have the advantages of high power density, good cycle performance, fast charge and discharge, non-toxicity, and low environmental pollution, and are gradually used in daily life. However, low-power supercapacitors are difficult to meet the needs of electric vehicles and hybrid vehicles. Therefore, it is imperative to develop high-power su...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/36H01G11/86
CPCH01G11/30H01G11/36H01G11/86Y02E60/13
Inventor 赵永男高海燕王青
Owner TIANJIN POLYTECHNIC UNIV
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