New process for preparing polymeric carbon material by modifying graphite through electrochemical method

Abstract

The invention discloses a new process for preparing a polymeric carbon material by modifying graphite through an electrochemical method, and relates to the graphite modification deep processing technology. The new process comprises an electrolyzer, an electrolyte, positive and negative electrodes and a direct current power source. The high-carbon graphite is separately contained into two acid-proof bags to be placed into the electrolyzer, the graphite electrodes are inserted into the two graphite bags, a hydrofluoric acid aqueous solution is poured into the electrolyzer, the direct current power source is connected with the two electrodes, the electrolytic current is 1.5 A to 2A, the electrolysis temperature is 80 DEG C to 85 DEG C, and the reacting time is 100 hours. In the electrolytic process, electrode reversing is carried out every four hours, and meanwhile, the left and right graphite bags and the electrodes of the graphite bags are rotated by 180 degrees. Washing acid removal is carried out after electrolysis to obtain a new monofluorophosphate four-carbon polymeric carbon graphite modifying material. The new process has the beneficial effects that the true new carbon monofluoride high-grade polymeric carbon material is prepared. The material is large in mass, high in density and large in electron quantity, changes the plasticity of common graphite and has the flocculating performance. Divided meshes can reach the nanoscale. The material has hydrophilic-lipophhilic properties, high lubricity and chemical stability. The material widely serves as a high temperature lubricating agent and negative and positive electrode materials of high power lithium batteries, and is a novel functional material wide in purpose.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of deep processing of graphite, and mainly relates to the technology of preparing graphite-polycarbon new material by modifying graphite with an electrochemical method. [0003] Background technique: [0004] At present, there is a common misunderstanding in the graphite industry and graphite deep processing research and development departments. It is manifested in the purification of graphite by fluorination. Graphite crystals are planar layered structures composed of regular hexagonal carbon rings, and some impurities are between layers. Mainly some silicon oxide impurities, these impurities cannot be removed by ordinary beneficiation and beneficiation methods, so the fluorination purification method appeared, which can remove impurities in graphite, especially silicon impurities, and this method was misunderstood. It is completely wrong to think that fluorinated graphite is produced. This method on...

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Problems solved by technology

There are very few domestic and foreign literature reports on real graphite fluoride, or the reports are only about the functional uses of new graphite fluoride materials, etc. As for its generation method and preparation technology, there are basically no reports and disclosures

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