Composite inflation liquid

A technology of expansion liquid and complexing agent, which is applied in the field of graphene, can solve the problems of inability to deal with metal ions, decrease in the amount of effective substances, and aggravation of ineffective decomposition, so as to ensure mildness and safety, ensure sufficiency, and easily obtain raw materials Effect

Inactive Publication Date: 2015-08-26
DEYANG CARBONENE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Initially, metal ions only exist between graphite layers, so the reaction is mainly based on effective decomposition; but as the reaction progresses and the graphite flakes are peeled off, the interlayer metal ions gradually dissolve into the liquid phase. When the concentration of metal ions increases To a certain extent, it will cause the aggravation of invalid decomposition
Especially in mass production (single-batch preparation of hundreds of kilograms of graphene), the increase in the amount of material will lead to a huge amount of metal ions dissolved from the graphite layers, and the increase in material will also make the diffusion of metal ions in the solution hindered, but because the expansion liquid in the above patent is oxalic acid or hydrogen peroxide solution, the expansion liquid cannot process the metal ions in the solution, which leads to the intensification of local invalid decomposition, which reduces the amount of effective substances participating in the expansion reaction, resulting in Insufficient expansion of the intercalated graphite raw material, which in turn adversely affects graphite expansion

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] A composite expansion liquid, which is uniformly mixed with the following components, each component and the mass percentage of each component are: 90% hydrogen peroxide solution, 1% metal ion complexing agent, 5% pH regulator, surface Tonicity regulator 0.5%, the rest is water. Wherein, the concentration of the hydrogen peroxide solution is 20%, and the metal ion complexing agent in the composite expansion liquid is one or both of potassium sodium tartrate and sodium pyrophosphate, and the composite expansion liquid is The pH adjusting agent is a compound of one or both of hydrochloric acid and sulfuric acid, and the surface tension adjusting agent in the compound swelling liquid is a compound of one or two of methanol and ethanol.

[0022] In this example, it has been proved by experiments that taking 4 parts of the same amount of graphite intercalation compound as an example, using the composite expansion liquid prepared by the above specific parameters for expansion...

Embodiment 2

[0025] A composite expansion liquid, which is uniformly mixed with the following components, and the mass percentage of each component and each component is: hydrogen peroxide solution 85%, metal ion complexing agent 5%, pH regulator 3%, surface Tonicity regulator 2%, the rest is water. Wherein, the concentration of the hydrogen peroxide solution is 24%, and the metal ion complexing agent in the composite swelling liquid is a composite of one or more of sodium pyrophosphate, ethylenediaminetetraacetic acid sodium salt and oxalic acid, The pH regulator in the composite swelling liquid is a compound of one or more of phosphoric acid, oxalic acid, formic acid and acetic acid, and the surface tension regulator in the composite swelling liquid is one or both of propanol and butanol. compound of species.

[0026] In this example, it has been proved by experiments that taking 4 parts of the same amount of graphite intercalation compound as an example, using the composite expansion l...

Embodiment 3

[0029] A composite expansion liquid, which is uniformly mixed with the following components, and the mass percentage of each component and each component is: hydrogen peroxide solution 80%, metal ion complexing agent 8%, pH regulator 5%, surface Tonicity regulator 3.5%, the rest is water. Wherein, the concentration of the hydrogen peroxide solution is 27%, and the metal ion complexing agent in the composite swelling liquid is one or both of oxalate and sodium gluconate. The pH regulator is a compound of one or more of oxalic acid, ammonia water, sodium hydroxide and potassium hydroxide, and the surface tension regulator in the composite swelling liquid is one or both of butanol and ethyl acetate. compound of species.

[0030] In this example, it has been proved by experiments that taking 4 parts of the same amount of graphite intercalation compound as an example, using the composite expansion liquid prepared by the above specific parameters for expansion treatment for 40 minu...

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PUM

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Abstract

The invention discloses a composite inflation liquid which is characterized in that the inflation liquid is prepared by uniformly mixing the following components, by mass: 60-90% of a hydrogen peroxide solution, 1-10% of a metal ion complexing agent, 1-5% of a pH value adjusting agent, 0.5-5% of a surface tension adjusting agent, and balance of water. With the inflation liquid, metal ions in a solution can be absorbed during an inflation reaction, such that the metal ions lose their catalytic activity. Effective decomposition is promoted, and ineffective decomposition is inhibited, such that a graphite intercalation compound can be inflated completely and thoroughly.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a composite expansion liquid, which is mainly used for expansion treatment of graphite intercalation compounds, and is especially suitable for large-scale treatment of graphite intercalation compounds. Background technique [0002] Since its discovery in 2004, graphene has attracted much attention as a new type of carbon material. It is a completely sp 2 The quasi-two-dimensional crystal material composed of hybrid carbon atoms with a thickness of only one atomic layer or several single atomic layers has excellent properties such as high light transmission and electrical conductivity, high specific surface area, high strength and flexibility, etc. It is expected to be widely used in the fields of high-performance nanoelectronic devices, optoelectronic devices, gas sensors, composite materials, field emission materials and energy storage. [0003] At present, the definition of graphene ...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 赵景浩姚林牟舜禹黄全国杜晓峰高华
Owner DEYANG CARBONENE TECH
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