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Preparation method for Ag/carya cathayensis peel based active carbon composite capacitor electrode material

A technology of capacitor electrodes and composite materials, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors to achieve good electrical conductivity and maintain electrical conductivity.

Inactive Publication Date: 2016-01-06
HANGZHOU XINGYU CARBON TECH GREEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activated carbon produced in this way has a large surface area and can store a relatively large amount of electricity, it has fatal flaws in practical applications because the carbon itself is not conductive.

Method used

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  • Preparation method for Ag/carya cathayensis peel based active carbon composite capacitor electrode material
  • Preparation method for Ag/carya cathayensis peel based active carbon composite capacitor electrode material

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specific Embodiment approach 1

[0014] Specific embodiment one: a kind of preparation method of Ag / hickory cattail shell base activated carbon composite capacitive electrode material is specifically finished according to the following steps:

[0015] Step 1: 1) Place the outer cattail shell of the hickory nut outdoors to dry naturally, air-dry, and pulverize in a pulverizer, and the powder passes through 200 mesh. 2) Carbonizing the hickory cattail shell powder in step 1) under the protection of nitrogen, the carbonization temperature is 500° C., and the carbonization time is 0.5 hour. 3) Mix the carbonized material in step 2) with KOH evenly and then activate it under the protection of nitrogen. The weight ratio of carbonized material to KOH is 1:1, the activation temperature is 800°C, and the activation time is 0.5 hours.

[0016] 4) After the product obtained in step 3) is cooled, wash it with dilute hydrochloric acid and acetic acid respectively, and then wash it with distilled water until the pH value ...

specific Embodiment approach 2

[0018] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is:

[0019] In the step, the particle size is over 400 mesh, the carbonization temperature is 650°C, the carbonization time is 1.0 hour, the weight ratio of carbonization material to sodium carbonate is 1:6, the activation temperature is 900°C, the activation time is 1.5 hours, and the heating rate is 10°C / min, the concentration of dilute hydrochloric acid is 0.2mol / L, the concentration of acetic acid is 1.0mol / L, and the quality of the hickory cattail shell base activated carbon powder that adds is 1.0g. Others are the same as the first embodiment.

specific Embodiment approach 3

[0020] Specific embodiment three: the particle size in the step is over 600 mesh, the carbonization temperature is 800°C, the carbonization time is 2.0 hours, the weight ratio of carbonization material to sodium carbonate is 1:10, the activation temperature is 1000°C, and the activation time is 2 hours, The heating rate is 10°C / min, the concentration of dilute hydrochloric acid is 0.3 mol / L, the concentration of acetic acid is 2.0 mol / L, and the mass of hickory cattail shell-based activated carbon powder added is 1.0 g. Others are the same as the first embodiment.

[0021] figure 1 It is the XRD figure of the Ag / hickory cattail shell base activated carbon composite capacitor electrode material prepared by the specific embodiment two, from the figure, it can be observed that the standard diffraction peak of Ag and the amorphous carbon diffraction peak representing bamboo charcoal indicate the successful synthesis of Ag / bamboo charcoal composite material.

[0022] figure 2 I...

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Abstract

The invention relates to a preparation method for an Ag / carya cathayensis peel based active carbon composite capacitor electrode material. Firstly, the carya cathayensis peel based active carbon with a high specific surface area is obtained by adopting a KOH activation method; and then nanometer Ag is loaded on the basis of the active carbon through a liquid phase reduction method. Researches show that the Ag / bamboo charcoal material is higher in specific surface area and excellent in electrode performance; and meanwhile, the composite material is safe, environment-friendly, non-toxic, and durable, and can be used as the good capacitor electrode material.

Description

technical field [0001] The invention relates to a preparation method of an Ag / hickory cattail shell-based activated carbon composite capacitor electrode material, which can be used as a high-efficiency capacitor electrode. Background technique [0002] The distribution of hickory nuts in the country is relatively small, mainly distributed in the mountainous areas of northwest Zhejiang and southeast Anhui. The cattail shells of hickory nuts contain a kind of alkaloid, which is highly alkaline and not easy to rot. Every year, the hickory nuts are discarded after picking The outer cattail shells of hickory have caused serious pollution to the local ecological environment. At present, no matter whether it is piled up on the mountain or piled up in a centralized special place, it cannot solve the increasing solid waste of hickory cattail shells. Every year, the government invests a lot of manpower, material resources and funds but has not achieved good results. The present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/22H01G11/32H01G11/34H01G11/86
Inventor 洪波徐卫星
Owner HANGZHOU XINGYU CARBON TECH GREEN CO LTD
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