Ultrafast hydrogen ion composite electrode material and preparation method thereof

A composite electrode and hydrogen ion technology, applied in the field of materials, can solve the problems of low capacitance, poor conductivity and stability, and limit application development, and achieve the effect of simple preparation process and good electrochemical performance.

Inactive Publication Date: 2017-10-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electric double layer capacitance is generated by the confrontation of charges caused by the directional arrangement of electrons or ions at the electrode / solution interface. At present, the electrode materials of electric double layer capacitors are mainly carbon materials, but their application development is limited due to their low capacitance.
Pseudocapacitors are generated by highly reversible chemical adsorption and desorption and redox reactions of electroactive substances on the two-dimensional or quasi-two-dimensional space of the electrode surface or in the bulk phase. The pseudocapacitor electrode materials are mainly transition metal-based materials, but due to The application of metal-based materials is limited due to their shortcomings such as poor conductivity and stability. Therefore, the development of new supercapacitor electrode materials has become a key issue.

Method used

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  • Ultrafast hydrogen ion composite electrode material and preparation method thereof
  • Ultrafast hydrogen ion composite electrode material and preparation method thereof
  • Ultrafast hydrogen ion composite electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A preparation method of ultrafast hydrogen ion composite material includes the following steps:

[0026] A. Put 0.5 g of perylene tetracarboxylic acid anhydride glutamic acid and 50 ml of 2 mg / ml graphite oxide suspension into a 100 ml round bottom flask and stir at a certain speed to form a uniform mixed solution, and react at 95°C. 4 Within hours, the perylene tetracarboxylic anhydride glutamic acid / graphite oxide composite was obtained.

[0027] B. Add 0.7 ml of ammonia and 1.0 ml of hydrazine hydrate to the mixed solution obtained in step A to reduce graphite oxide, the mass fraction of ammonia water is 15%, the mass fraction of hydrazine hydrate is 25%, and react at 95°C for 1 hour. After the completion, the product is cooled to room temperature, centrifuged and washed with deionized water and absolute ethanol for 4 times, after drying, the perylenetetracarboxylic anhydride amino acid / reduced graphite oxide ultrafast hydrogen ion composite material can be prepared.

[00...

Embodiment 2

[0032] A preparation method of ultrafast hydrogen ion composite material includes the following steps:

[0033] A. Put 0.5 g of perylenetetracarboxylic anhydride-based aspartic acid and 40 ml of 3 mg / ml graphite oxide suspension into a 100 ml round-bottom flask and stir at a certain speed to form a uniform mixed solution, and react at 80°C After 3 hours, a perylene tetracarboxylic anhydride-based aspartic acid / graphite oxide composite was obtained.

[0034] B. Add 0.5 ml of ammonia water and 1.2 ml of hydrazine hydrate to the mixed solution obtained in step A to reduce graphite oxide, the mass fraction of ammonia water is 10%, the mass fraction of hydrazine hydrate is 20%, and the reaction is carried out at 90°C for 2 hours. After the end, the product was cooled to room temperature, and washed with deionized water and absolute ethanol for 4 times by centrifugation. After drying, the perylenetetracarboxylic anhydride based aspartic acid / reduced graphite oxide ultra-fast hydrogen ion...

Embodiment 3

[0036] A preparation method of ultrafast hydrogen ion composite material includes the following steps:

[0037] A. Put 0.5 g of perylene tetracarboxylic acid anhydride glycine and 40 ml of the 3.5 mg / ml graphite oxide suspension into a 100 ml round bottom flask and stir at a certain speed to form a uniform mixed solution, and react at 90°C for 5 hours. The perylene tetracarboxylic acid anhydride glycine / graphite oxide composite was obtained.

[0038] B. Add 1.0 ml of ammonia and 0.8 ml of hydrazine hydrate to the mixed solution obtained in step A to reduce graphite oxide, the mass fraction of ammonia water is 25%, the mass fraction of hydrazine hydrate is 15%, and the reaction is carried out at 85°C for 3 hours. After the end, the product is cooled to room temperature, centrifuged and washed 4 times with deionized water and absolute ethanol, and dried to prepare perylenetetracarboxylic anhydride glycine / reduced graphite oxide ultra-fast hydrogen ion composite material.

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Abstract

The invention discloses an ultrafast hydrogen ion composite electrode material and a preparation method thereof. The ultrafast hydrogen ion composite electrode material has ultrafast hydrogen ion protonation/deprotonation electrochemical effect based on the perylene anhydride amino acid, the reduced graphite oxide has large surface area and conductivity, the perylene anhydride amino acid and the reduced graphite oxide are polymerized based on the pai-pai interaction, the perylene anhydride amino acid is loaded on the reduced graphite oxide; the preparation method comprises the following steps: mixing the perylene anhydride amino acid and the graphite oxide suspension at high temperature, uniformly stirring; adding a reducing agent into the above-mentioned solution to react to obtain the composite material, centrifuging, washing, and drying to obtain the product. The preparation method disclosed by the invention is simple and fast in preparation process; the composite electrode material has ultrafast hydrogen ion protonation/deprotonation electrochemical effect, can be used as the electrode material of the super capacitor, and provides the theoretical basis for the composite of the polyaromatic nucleus carboxyl compound and the carbon material on the super capacitor electrode material research aspect.

Description

Technical field [0001] The invention belongs to the field of materials, and particularly relates to an ultrafast hydrogen ion composite electrode material based on perylene tetracarboxylic anhydride amino acid / reduced graphite oxide and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the global economy, the continuous reduction of fossil fuels and serious environmental pollution have become more and more serious. Research on a new type of environmentally friendly, low-cost, high-efficiency energy conversion system has become urgent. Supercapacitors have attracted widespread attention due to their high power density, long cycle life, and environmental friendliness. They have been successfully used in consumer electronics and energy transportation and have broad application prospects. [0003] According to the storage and conversion mechanism of electric energy, supercapacitors can be divided into electric double layer capaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/86
CPCY02E60/13H01G11/30H01G11/32H01G11/86
Inventor 赵英渊郭静马廷丽江念高立国李艳强
Owner DALIAN UNIV OF TECH
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