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Preparation of high quality graphene powders

Preparation of high quality graphene powders

  • Categories:News
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  • Time of issue:2023-02-25
  • Views:811

(Summary description)The super high quality graphene powder developed and produced by Hefei Vigon Materials Technology is different from the traditional chemical and physical methods. The method is a super graphene powder developed by the company through its R&D department over a period of 2 years, with high monolayer rate, good crystallization, an order of magnitude higher electrical conductivity than both the traditional chemical and physical methods, with a very large specific surface area (specific surface area range between 800-1500m2/g), ideal for battery, physics and electronics researchers.

Preparation of high quality graphene powders

(Summary description)The super high quality graphene powder developed and produced by Hefei Vigon Materials Technology is different from the traditional chemical and physical methods. The method is a super graphene powder developed by the company through its R&D department over a period of 2 years, with high monolayer rate, good crystallization, an order of magnitude higher electrical conductivity than both the traditional chemical and physical methods, with a very large specific surface area (specific surface area range between 800-1500m2/g), ideal for battery, physics and electronics researchers.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2023-02-25
  • Views:811
Information

Graphene is not only one of the thinnest known materials, it is also very strong and hard; as a monolith, it can transfer electrons faster than any known conductor at room temperature. Graphene is a new material consisting of a single layer of carbon atoms in a sheet-like structure. Currently the world's thinnest yet hardest nanomaterial, it is almost completely transparent and absorbs only 2.3% of light. Because of its unique properties, graphene has been called the "wonder material". Scientists have even predicted that it is graphene batteries that will "revolutionise the 21st century". The use of graphene in battery electrode materials can greatly improve charging efficiency and increase battery capacity. Self-assembling multilayer graphene sheets are not only an ideal design for lithium-air batteries, but can also be used in many other potential energy storage applications such as supercapacitors and electromagnetic guns. In addition, the new graphene material will not rely on platinum or other precious metals, which could effectively reduce costs and environmental impact.

Graphene is divided into two main categories: graphene powders and graphene films. The common methods of graphene powder production are mechanical exfoliation method, redox method and SiC epitaxial growth method. Microcrystalline Materials Technology's graphene thin film production method is chemical vapour deposition (CVD) powder production mechanical exfoliation method is a method that uses the friction and relative motion between the object and graphene to obtain a thin layer of graphene material. This method is simple to operate and the resulting graphene usually retains an intact crystalline structure.

The properties and applications of graphene powder super carbon materials are as follows: better electrical conductivity than activated carbon, effective in reducing internal resistance and improving cycle life. Compared with conductive carbon black, it has more stable conductivity, less dosage and high efficiency. When applied to conductive materials for lithium-ion batteries, adding 1% of graphene microchips can reduce the number of carbon nanotubes by 3/2, thus increasing the amount of lithium ferrous phosphate, which can effectively improve battery capacity, cycle life and multiplier performance. Graphene has a large specific surface area and strong adsorption performance. It can be compounded with traditional photocatalytic products to improve their performance. For example, it is less sensitive to UV conditions, while ordinary light can stimulate a response. Adsorption is usually measured in terms of specific surface area, which is much larger for graphene than for activated carbon. However, unlike activated carbon, graphene has many microporous structures.

The super high quality graphene powder developed and produced by Hefei Vigon Materials Technology is different from the traditional chemical and physical methods. The method is a super graphene powder developed by the company through its R&D department over a period of 2 years, with high monolayer rate, good crystallization, an order of magnitude higher electrical conductivity than both the traditional chemical and physical methods, with a very large specific surface area (specific surface area range between 800-1500m2/g), ideal for battery, physics and electronics researchers.

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