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Preparation method and application of carbon material with high specific surface and high graphitization degree

A technology with high specific surface area and high graphite, applied in the preparation/purification of carbon, etc., can solve the problem that graphite cannot meet the requirements of high capacity, and achieve good market prospects and development potential, low cost, and increased degree of graphitization Effect

Active Publication Date: 2017-07-25
佛山市利元合创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the gradual improvement of power storage capacity requirements for electrical equipment, traditional graphite can no longer meet the high capacity requirements. Therefore, research on new carbon materials as lithium-ion battery anode materials is also a hot spot.

Method used

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  • Preparation method and application of carbon material with high specific surface and high graphitization degree
  • Preparation method and application of carbon material with high specific surface and high graphitization degree
  • Preparation method and application of carbon material with high specific surface and high graphitization degree

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preparation example Construction

[0041] The invention discloses a rapid preparation method and application of a carbon material with high specific surface area and high graphitization degree. The characteristics and key points of this rapid preparation method include the following points:

[0042] 1) Precursor selection, select oligomeric small molecules as precursors to control the degree of polymerization; 2) New sulfonation means; 3) The introduction of ball milling promotes the formation of surface defects; 4) The secondary mixing method of precursors and metal salts ; 5) The precursor is subjected to pyrolysis and graphitization treatment to obtain a carbon material with a high specific surface area and a high degree of graphitization.

[0043] The method of the invention is simple and low in cost. The prepared carbon material has high adsorption efficiency for heavy metals, has high activity as a fuel cell catalyst, and exhibits high capacity and lifespan in lithium-ion batteries. The prepared carbon ...

Embodiment 1

[0047] A carbon material with a high specific surface area and a high degree of graphitization, prepared by the following preparation method:

[0048] 1) Add 200 ml of deionized water and 50 ml of 10% (mass percentage concentration) polyvinyl alcohol solution in the reaction vessel, mix 5 ml of styrene in another vessel, 2 ml of divinylbenzene and 0.3 g of benzoyl peroxide, both Mix and stir at a speed of 500 rpm, and react at 80° C. for 30 minutes to obtain an oligomer. Wash, filter, and vacuum dry for later use.

[0049] 2) Under the condition of stirring, pretreat 5-20 g of small oligomeric molecules with 50-1000 mL of acid solution for 12-24 hours; the volume percentage concentration of the acid solution is 0.5-1 M; the acid solution is HCl solution; The rotational speed of the stirring is 200-1000 rpm; the deionized water is used for rinsing; the drying condition is drying at 60-80° C. for 6-12 hours.

[0050] 3) Add 5 g of the oligomeric small molecule product obtained...

Embodiment 2

[0063] A carbon material with a high specific surface area and a high degree of graphitization, prepared by the following preparation method:

[0064] 1) Add 200 ml of deionized water and 50 ml of 10% polyvinyl alcohol solution to the reaction container, mix 5 ml of styrene, 10 ml of vinyl chloride benzene and 1 g of benzoyl peroxide in another container, mix the two at a speed of 500 rpm Stir and react at 80°C for 30 minutes to obtain an oligomer. Wash, filter, and vacuum dry for later use.

[0065] 2) Under the condition of stirring, pretreat 5-20 g of small oligomeric molecules with 50-1000 mL of acid solution for 12-24 hours; the concentration of the acid solution is 0.5-1 M; the acid solution is HCl solution; the stirring The rotation speed is 200-1000 rpm; the deionized water is used for rinsing; the drying condition is to dry at 60-80° C. for 6-12 hours.

[0066] 3) Add 5 g of the oligomeric small molecule product obtained in step 2), add 30 ml of dichloroethane, soak...

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Abstract

The invention discloses a preparation method and an application of a carbon material with a high specific surface and a high graphitization degree. The preparation method comprises the following steps: 1, selecting oligomeric micro-molecules, and controlling reaction conditions to obtain an oligomer; 2, preprocessing the oligomer obtained in step 1; 3, sulfonating a product obtained in step 2; 4, adding a metal salt solution into the sulfonated oligomer obtained in step 3 in order to obtain metal ion-adsorbed sulfonated oligomer; 5, mixing the metal ion-adsorbed sulfonated oligomer with a metal salt; 6, placing a mixture obtained in step 5 in a ball milling tank, and carrying out high-speed ball milling in Ar atmosphere; and 7, placing a ball milled product obtained in step 6 in a tubular furnace, and heating the tubular furnace to 900-1100 DEG C to obtain carbon powder. The method has the advantages of simplicity and low cost, and the carbon material prepared in the invention has a very high adsorption rate to heavy metals, has high activity as a fuel cell catalyst, and has high capacity and long life in lithium ion cells.

Description

technical field [0001] The invention relates to a preparation method of a novel carbon material, which belongs to the technical field of material preparation, and specifically relates to a preparation method and application of a carbon material with a high specific surface area and high graphitization. The carbon material can be applied to the adsorption of heavy metals and fuel cell catalysts and lithium-ion battery electrode materials and other fields. Background technique [0002] With the frequent occurrence of environmental pollution problems, people's concern and requirements for environmental quality are constantly increasing. Heavy metal pollution poses serious harm to organisms and the environment. Therefore, the prevention and control of heavy metals is urgent, and the detection of heavy metal ions has become particularly important. The heavy metals that are often mentioned mainly refer to elements such as lead (Pb), cadmium (Cd), mercury (Hg), bismuth (Bi), zinc ...

Claims

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Application Information

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IPC IPC(8): C01B32/05
CPCC01P2002/82C01P2004/04C01P2006/12C01P2006/14
Inventor 孟辉谢方艳袁黎明
Owner 佛山市利元合创科技有限公司
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