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Metal phthalocyanine-MXene composite material, supercapacitor and preparation method thereof

A supercapacitor, metal phthalocyanine technology, applied in the field of electrochemistry, to achieve commercialization, prevent the effect of re-stacking, and low price

Active Publication Date: 2020-10-13
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing MXene materials still need to be improved

Method used

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  • Metal phthalocyanine-MXene composite material, supercapacitor and preparation method thereof
  • Metal phthalocyanine-MXene composite material, supercapacitor and preparation method thereof
  • Metal phthalocyanine-MXene composite material, supercapacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Copper phthalocyanine (CuPc) nanostructures were prepared by the following process:

[0067] 2.5 mg CuPc was dissolved in 2.5 mL methanesulfonic acid, and the solution was sonicated. Afterwards, the solution was added dropwise into 200 mL of deionized water at a rate of 2 mL / min with constant stirring to form CuPc nanostructures. Finally, the solid powder was washed with deionized water, ethanol and acetone solutions, respectively, and the filtered product was dried in a vacuum oven at 80 °C. Take a small amount of sample preparation, use TEM to observe the morphology and structure of the material, such as figure 1 As shown, the CuPc nanostructures were found to be nanorods with a length of about 0.2-2 μm and a width of about 50-150 nm.

Embodiment 2

[0069] Peripheral octamethyl nickel phthalocyanine (NiMe 2 Pc) Nanostructures are prepared by the following process:

[0070] 10mg NiMe 2 Pc was dissolved in 2 mL of methanesulfonic acid, and the solution was sonicated. Afterwards, the solution was added dropwise into 200 mL of deionized water at a rate of 1 mL / min with constant stirring to form NiMe 2 Pc nanostructures. Finally, the solid powder was washed with deionized water, ethanol and acetone solutions, respectively, and the filtered product was dried in a vacuum oven at 80 °C. Take a small amount of sample preparation, use TEM to observe the morphology and structure of the material, such as figure 2 shown, found NiMe 2 The Pc nanostructure is a nanowire with a length of about 50-500nm and a width of about 20-50nm.

Embodiment 3

[0072] Based on non-peripheral octamethylcopper phthalocyanine (N-CuMe 2 The preparation of the supercapacitor of Pc):

[0073] N-CuMe 2 Pc nanostructures and carbon black were mixed at a weight ratio of 85:10, ground for 15 min, and dispersed in an ethanol solution containing 5 wt% perfluorosulfonic acid. Afterwards, the slurry of the mixture was spread on a carbon paper substrate (2 cm x 1 cm x 0.1 cm) using a doctor blade method. Then, the electrode was dried in a vacuum oven at 80 °C for 10 h to evaporate the solvent. The total effective mass of the electrode is the difference between the mass of the working electrode before and after coating, which is about 1 mg / cm 2 . at 1M H 2 SO 4 In the electrolyte solution, CV studies were performed at a scan rate of 5-100mV / s, and the results were as follows Figure 6 Shown in (a); then carry out GCD research under the current density of 0.5~20A / g, the result is as follows Figure 7 (a) shown. When the current density is 0....

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Abstract

The invention discloses a metal phthalocyanine-MXene composite material as well as a preparation method and application thereof. The method for preparing the metal phthalocyanine-MXene composite material comprises the following steps of: (1) mixing metal phthalocyanine with a first solvent to obtain a metal phthalocyanine solution, and adding the metal phthalocyanine solution into water to obtaina metal phthalocyanine nano structure; and (2) mixing the metal phthalocyanine nano structure, an MXene material and a second solvent to obtain the metal phthalocyanine-MXene composite material. The method is simple in technological process and good in repeatability; the adopted materials are easy to synthesize and low in price; large-scale preparation is easy; and commercialization of the materials and devices is facilitated. With the method adopted, the metal phthalocyanine nano structure can be introduced between MXene layers to serve as an interlayer spacer, therefore, the restacking effect of the MXene is effectively prevented, electrochemical active sites on the surface of the MXene are increased, the ion mobility in an electrochemical oxidation reduction process is remarkably enhanced, and then the electrochemical response to charge storage can be improved.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular, the invention relates to a metal phthalocyanine-MXene composite material and a preparation method thereof, and a supercapacitor using the metal phthalocyanine-MXene composite material and a preparation method thereof. Background technique [0002] Due to the ever-increasing world population, the consumption of various energy sources has led to a gradual reduction of non-renewable energy sources. Electrochemical energy storage devices, especially supercapacitors (also known as electrochemical capacitors), are ideal for many applications such as electric vehicles, the power sector, and portable electronics due to their long cycle life , high power density, high energy density, good temperature characteristics and environmental protection. Therefore, researchers focus on finding new candidate materials for high-performance energy storage and conversion devices. [0003] In recent yea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22H01G11/30H01G11/86
CPCC07D487/22H01G11/30H01G11/86Y02E60/13
Inventor 许宗祥李敏章
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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