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A kind of flaky carbonyl functionalized carbon material and its preparation method and application

A functionalized, carbon material technology, applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., can solve the problems of poor capacitance performance, poor application, and unenvironmental protection, achieving low cost, simple operation, Excellent energy storage performance

Active Publication Date: 2018-09-14
HUANGGANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above analysis shows that the capacitive performance, especially the capacity, of the doped functionalized carbon materials reported so far is still relatively poor, and it is still far from the actual application.
In addition, the currently reported synthesis methods have the disadvantages of low efficiency, high cost, and not being environmentally friendly. Most of the reported synthesis methods rely on silicon-based templates. Combining the above analysis, a simple and effective method is used to obtain high-capacity Challenges remain in functionalizing carbon-based electrode materials

Method used

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  • A kind of flaky carbonyl functionalized carbon material and its preparation method and application
  • A kind of flaky carbonyl functionalized carbon material and its preparation method and application
  • A kind of flaky carbonyl functionalized carbon material and its preparation method and application

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Effect test

Embodiment 1

[0037] 0.94g of phenol was dissolved in 20ml of water to obtain a precursor solution with a concentration of 0.5mol / L, and then 2.5ml of formaldehyde (37%) was added to the precursor solution and mixed uniformly to obtain a mixed precursor solution. The prepared mixed precursor solution was impregnated onto calcium hydroxide by incipient wetness impregnation and kept for 72 hours to obtain a mixture of oligomeric resin / calcium hydroxide, and the mixture of oligomeric resin / calcium hydroxide was thermoset at 120°C After 48 hours a cured resin / calcium hydroxide mixture was obtained. The obtained cured resin / calcium hydroxide mixture was roasted in an argon atmosphere at 600°C for 4 hours to obtain a carbon / calcium oxide composite structure, and the carbon / calcium oxide composite structure was placed in 100ml of hydrochloric acid with a concentration of 0.2mol / L Carrying out etching to remove calcium oxide, then carrying out suction filtration, washing and drying to obtain a thin...

Embodiment 2

[0039]1.11 g of catechol was dissolved in 10.0 ml of water to obtain a precursor solution with a concentration of 1.0 mol / L, and then 2.5 ml of formaldehyde (37%) was added to the precursor solution and mixed uniformly to obtain a mixed precursor solution. The prepared mixed precursor solution was impregnated onto magnesium hydroxide by incipient wetness impregnation and kept for 48 hours to obtain a mixture of oligomeric resin / magnesium hydroxide, and the mixture of oligomeric resin / magnesium hydroxide was thermoset at 100°C After 24 h a cured resin / magnesium hydroxide mixture was obtained. The obtained cured resin / magnesium hydroxide mixture was roasted in an argon atmosphere at 700°C for 2 hours to obtain a carbon / magnesia composite structure, and the carbon / magnesia composite structure was placed in 100ml of hydrochloric acid with a concentration of 0.2mol / L Carry out etching to remove magnesia, then perform suction filtration, wash and dry to obtain a thin sheet-shaped ca...

Embodiment 3

[0041] 1.26g of trisphenol was dissolved in 5.0ml of water to obtain a precursor solution with a concentration of 2.0mol / L, and then 2.5ml of formaldehyde (37%) was added to the precursor solution and mixed uniformly to obtain a mixed precursor solution. The prepared mixed precursor solution was impregnated onto magnesium hydroxide by incipient wetness impregnation and kept for 24 hours to obtain a mixture of oligomeric resin / magnesium hydroxide, and the mixture of oligomeric resin / magnesium hydroxide was thermoset at 80°C After 12 h a cured resin / magnesium hydroxide mixture was obtained. The obtained cured resin / magnesium hydroxide mixture was roasted in an argon atmosphere at 800°C for 1 hour to obtain a carbon / magnesia composite structure, and the carbon / magnesia composite structure was placed in 100ml of hydrochloric acid with a concentration of 0.2mol / L Carry out etching to remove magnesia, then perform suction filtration, wash and dry to obtain a thin sheet-shaped carbon...

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Abstract

The invention provides a preparation method of a flaky carbonyl functionalized carbon material. The preparation method comprises the following steps: mixing 0.5-2 mol / L soluble phenolic precursor solution with formaldehyde in accordance with a molar ratio of 1:3, impregnating the mixture onto magnesium hydroxide or calcium hydroxide by using an initial wet impregnation method, forming a mixture of resin / solid alkali by using the surface alkaline induction of solid alkali, and performing further thermosetting, high temperature carbonization, pickling, filtering, washing and drying on the obtained mixture of resin / solid alkali to obtain the flaky carbonyl functionalized carbon material. The flaky carbonyl functionalized carbon material prepared by the method and applied to supercapacitor energy storage as an electrode material has high specific capacity and excellent cycle stability, and the capacitance in 1.0M sulfuric acid electrolyte is up to 622F / g.

Description

Technical field: [0001] The invention belongs to the field of synthesis of functionalized carbon-based nanomaterials and application of electrochemical energy storage, and relates to a method for synthesizing a carbonyl-functionalized carbon material with a sheet-like morphology by using a catalytic template-induced method and its application in the preparation of an electrochemical supercapacitor Applications. Background technique: [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and rechargeable batteries. It has the characteristics of high power density, long service life, wide temperature range and fast charging speed. It has attracted worldwide attention in recent years. There has been an upsurge in research on supercapacitors and has entered a wide range of applications. [0003] Carbon-based electrode material is one of the commonly used electrode materials for supercapacitors. It has good electrical conductivity, good the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/34
CPCY02E60/13
Inventor 田正芳解明江张万举王永正沈宇郭学锋
Owner HUANGGANG NORMAL UNIV
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