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Super capacitor charcoal electrode material, super capacitor charcoal electrode, preparation method of material, and preparation method of electrode

A technology of supercapacitor and carbon electrode, applied in the direction of hybrid capacitor electrode, etc., can solve the problem of large consumption, achieve the effect of high specific capacity, excellent high current performance, and improve high current rate performance

Active Publication Date: 2015-05-06
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned method of preparing mesoporous carbon from coal liquefaction residue needs to consume a large amount of silica as a template agent, and the mass ratio of asphaltene to silica (template) is as high as 1:1.2, so the economy needs to be further improved

Method used

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  • Super capacitor charcoal electrode material, super capacitor charcoal electrode, preparation method of material, and preparation method of electrode
  • Super capacitor charcoal electrode material, super capacitor charcoal electrode, preparation method of material, and preparation method of electrode

Examples

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Embodiment 1

[0051] This embodiment is used to illustrate the preparation method of the carbon electrode material provided by the present invention and the preparation method of the carbon electrode for supercapacitor.

[0052] Preparation of aromatics from coal liquefaction:

[0053] Weigh 50g coal direct liquefaction residue, mix with 150g coal direct liquefaction medium oil (distillation range 220-260°C) at 250°C and stir at 300r / min for 45min to extract coal liquefaction aromatics. The composition and properties of coal direct liquefaction residue and coal liquefaction aromatics are shown in Table 1.

[0054] Table 1

[0055]

carbon content

hydrogen content

average molecular weight

Ash content

Softening Point

Coal direct liquefaction residue

64.75% by weight

3.36% by weight

——

26.15% by weight

130℃

Coal liquefied aromatics

91.2% by weight

5.65% by weight

360

2800ppm

150℃

[0056] Preparation ...

Embodiment 2

[0066] This embodiment is used to illustrate the preparation method of the carbon electrode material provided by the present invention and the preparation method of the carbon electrode for supercapacitor.

[0067] Preparation of aromatics from coal liquefaction:

[0068] Same as Example 1.

[0069] Preparation of carbon electrode materials:

[0070] 1) Heating 66g of coal liquefied aromatics to 250°C and stirring for 1 hour under air atmosphere for stabilization;

[0071] 2) Carbonize the stabilized sample (softening point: 240°C) at 400°C for 1 hour under the protection of high-purity nitrogen;

[0072] 3) Mix the product obtained by carbonization with KOH at a weight ratio of 1:2 and activate at 650°C for 1 hour;

[0073] 4) The alkali was removed by acid washing with HCl with a volume ratio of 3:1, washed with deionized water to neutrality and dried to obtain the carbon electrode material for supercapacitors.

[0074] The carbon electrode material has a specific surfac...

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Abstract

The invention discloses a method for preparing a super capacitor charcoal electrode material by using coal liquefaction aromatic hydrocarbons, and the charcoal electrode material prepared through the method. The method comprises the following steps: sequentially stabilizing, charring and activating the coal liquefaction aromatic hydrocarbons, washing a product obtained after the activation, and drying, wherein eh ash content of the coal liquefaction aromatic hydrocarbons does not exceed 3000ppm. The invention also discloses a method for making a charcoal electrode by using the charcoal electrode material, and the charcoal electrode. The specific capacity of the charcoal electrode is effectively improved in the invention.

Description

technical field [0001] The invention relates to a method for preparing a carbon electrode material for a supercapacitor by using coal liquefied aromatics, a supercapacitor carbon electrode comprising the carbon electrode material and a manufacturing method thereof. Background technique [0002] Supercapacitors (Supercapacitors), also known as electrochemical capacitors, are a new type of energy storage device developed in recent years with performance between traditional capacitors and secondary batteries. Its main performance features are: both the high specific energy of the secondary battery and the high specific power of the traditional capacitor; the power density can reach 1-10kW / kg, which is equivalent to 5-10 times that of the battery; the charging and discharging speed is fast, and it can be used in several The charge and discharge are completed within seconds to minutes, and the charge and discharge efficiency is high, which can be ≥90%; the cycle performance is go...

Claims

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Application Information

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IPC IPC(8): C01B31/02H01G11/34
CPCY02E60/13
Inventor 郑冬芳宫晓颐赖世耀张胜振刘均庆盛英
Owner CHNA ENERGY INVESTMENT CORP LTD
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