Composite inflation liquid

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 ...

AI Technical Summary

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

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