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Preparation method of few-layer cryptocrystalline graphene

A technology of cryptocrystalline graphite and few-layer graphene, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve problems affecting applications, graphene's electrical and thermal conductivity, and graphene's quality. Achieve the effect of low production cost and good low temperature discharge performance

Active Publication Date: 2022-02-08
湖南润众新材料科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the above-mentioned intercalation agent will be adsorbed in aphanitic graphite and it is difficult to separate, which has a great impact on the quality of the final graphene, and the use of organic dispersants has an impact on the electrical and thermal conductivity of graphene, affecting its use in conductive materials or graphene. Application in lead storage battery

Method used

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  • Preparation method of few-layer cryptocrystalline graphene
  • Preparation method of few-layer cryptocrystalline graphene
  • Preparation method of few-layer cryptocrystalline graphene

Examples

Experimental program
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Embodiment 1

[0044] S1 uses 40 to 80% of the crystalline graphite ore of 1 ton with a Raymond mill to 100 ~ 200 powder, slurry to the mine slurry concentration in the stirring barrel, and sodium hydroxide is added to the slurry 8kg. After mixing the pulp mixed with the slurry, it was sent to the vertical stirring mulch for the first stage mill, resulting in a slurry I; the mill feed velocity was 28 liters per minute, the line velocity was 10 m / sec.

[0045] S2 dilute the slurry I add water to 10% by weight, add secondary octanol 1.5kg, kerosene 0.8kg, water glass 5kg, 2 kg of sodium hexamphosphate for the first full open flotation, flotation to ensure that the slurry in the flotation tank Time is not less than 40 minutes to get slurry II.

[0046] S3 is filtered by a slurry II with a plate frame filter, and the water filter is about 60%, and the filter cake of the plate filter press is slurried with the partial slurry II, and the concentration is 25%, and then placed The second section of th...

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Abstract

The invention provides a low-cost batch preparation method of few-layer cryptocrystalline graphene. Few-layer cryptocrystalline graphene with high carbon content is obtained through a brand new liquid phase stripping process.

Description

Technical field [0001] The present invention relates to a flotation method of a method of preparing an uniform crystalline graphene, belonging to the field of graphene. Background technique [0002] Graphene is a SP 2 Hybrid connection carbon atoms are closely stacked into the thinnest, most hard nanomaterials of single-layer two-dimensional honeycomb lattice structure, and it is almost completely transparent, only 2.3% of light, carbon atoms in graphene The force is very strong, at normal temperature, even if the surrounding carbon atom is crushed, the interference of the inner electrons in the graphene electron is also very small, and the electron mobility is over 15,000 cm2 / v · S, and the motor speed of the electron movement is 1 / 300, also carbon-bit nanotubes or silicon crystals, and only about 10 6 Ω · cm of resistivity, lower than copper and silver. Therefore, graphene has excellent optical, electrical, mechanical properties, and important application prospects in mater...

Claims

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Application Information

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IPC IPC(8): C01B32/19C01B32/196
CPCC01B32/19C01B32/196C01B2204/30C01B2204/04C01B2204/32Y02E60/10
Inventor 洪声安刘洪涛
Owner 湖南润众新材料科技有限公司
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