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Layer combination controllable carbon material with nano pole of different scale, preparation method and application

A technology of carbon materials and nanopores, applied in the application field of electrochemical capacitor electrode materials, can solve the problems of low content, poor structure reproducibility, improvement of limiting performance and broadening of application range, etc., to achieve the effect of high-efficiency ion transmission capacity

Inactive Publication Date: 2009-07-08
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional chemical / physical activation methods can prepare activated carbon with a certain mesopore content, these mesopores are relatively small in size and relatively low in content, which limits the improvement of its performance and the broadening of its application range.
However, the process using mesoporous or microporous molecular sieves as a template has the disadvantages of long cycle, high cost, and poor structure reproducibility, which is not conducive to large-scale utilization.

Method used

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  • Layer combination controllable carbon material with nano pole of different scale, preparation method and application
  • Layer combination controllable carbon material with nano pole of different scale, preparation method and application
  • Layer combination controllable carbon material with nano pole of different scale, preparation method and application

Examples

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Effect test

Embodiment 1

[0022]Magnesium acetate and water are mixed according to the weight ratio of 1:4 and completely dissolved to form solution I. Sodium hydroxide, P123 and water are mixed and dissolved completely according to the weight ratio of 1:0.5:30 to form solution II, and then the above two solution systems are stirred and mixed at 20°C, and the weight ratio of magnesium acetate to sodium hydroxide is 1: 1, under the action of strong base (NaOH), make magnesium salt form its hydroxide sol, add the ethanol solution of alcohol-soluble phenolic resin (the weight ratio of phenolic resin and ethanol is 1:4), the mixture of phenolic resin and described magnesium salt The weight ratio is 1:1. After the phenolic resin is completely precipitated under the action of water, the solvent water and ethanol are evaporated and removed at 60°C (48 hours), and the phenolic resin / hydroxide composite material can be obtained, which can be carbonized ( 600°C, 6 hours, ammonia gas), washed with hydrochloric ac...

Embodiment 2

[0027] Nickel nitrate and water are mixed and dissolved completely according to the weight ratio of 1:5 to form solution I. Urea, CTAB and water are completely dissolved in a weight ratio of 1:1:20 to form solution II, and then the above two solutions are stirred and mixed at 90°C. The weight ratio of nickel nitrate to urea is 1:3, and nickel nitrate in urea Form its hydroxide sol under hydrolysis, add the ethanol solution of alcohol-soluble phenolic resin (the weight ratio of phenolic resin and ethanol is 1:3), the adding weight ratio of phenolic resin and described nickel salt is 1:1, treat phenolic resin After the resin is completely precipitated under the action of water, the solvent water and ethanol are evaporated and removed at 60°C (48 hours), and the phenolic resin / oxide composite material can be obtained, which is then carbonized (700°C, 6 hours, argon), and used Wash with hydrochloric acid to remove the template, mix the carbonized product and hydrochloric acid at a...

Embodiment 3

[0031] Zinc chloride and water were mixed and dissolved completely in a weight ratio of 1:5 to form solution I. Sodium carbonate, Brij30 and water are mixed and dissolved completely according to the weight ratio of 1:1:30 to form solution II, and then the above two solution systems are stirred and mixed at 10°C. The weight ratio of zinc chloride to sodium carbonate is 1:3, Zinc chloride forms its carbonate / oxide composite sol in the double effect of carbonate ion and water, adds the ethanol solution of alcohol-soluble phenolic resin (the weight ratio of phenolic resin and ethanol is 1:6), phenolic resin and described zinc The weight ratio of the salt added is 1:2. After the phenolic resin is completely precipitated under the action of water, the solvent water and ethanol are evaporated and removed at 60°C (48 hours), and the phenolic resin / oxide composite material can be obtained and carbonized (800°C, 5 hours, argon), washed with hydrochloric acid to remove the template, mixe...

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Abstract

The invention relates to a design method and preparation technology of an advanced material with a nanopore structure, specifically a carbon material with a controllable hierarchical combination of nanopores of different scales, a preparation method and an application thereof. The realization process is to obtain a metal oxide sol in an alkaline solution system, and mix an alcohol-soluble resin alcohol solution with it; in this process, the oxide sol is used as a template, and water is used as a resin precipitation agent to directly prepare a resin / oxide sol composite system . After removing the solvent, after carbonization, activation and template removal process, nanopores with controllable micropore ratio, controllable mesopore diameter and ratio, controllable macropore diameter and ratio, and concentrated distribution of mesopore / macropore diameter can be prepared Layered combination of carbon materials. The novel nanopore hierarchical composite structure carbon material prepared by the invention has different hierarchical pore structures, excellent ion transport performance and high electrochemical activity specific surface area, and is expected to be used as an electrode material for high energy density and high power density electrochemical capacitors.

Description

technical field [0001] The present invention relates to the design method and preparation technology of advanced materials with nanopore structure, specifically a design and preparation method of a new type of carbon material formed by a controllable combination of nanopores of different scales and its application as an electrode material for electrochemical capacitors . Background technique [0002] As an important energy storage element, electrochemical capacitors have attracted wide attention in various fields. However, conventional capacitors only have microfarads or picofarads of capacitance, which is greatly limited in application. It is very urgent to develop a capacitor with larger capacity, which can provide larger energy density and power density at the same time, and can play a role between batteries and traditional capacitors. As an energy storage device, capacitors need to have excellent instantaneous charge and discharge performance and good cycle performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02
Inventor 成会明王大伟李峰刘敏逯高清
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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