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Ultra-high quality graphene powder

Ultra-high quality graphene powder

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2023-02-24
  • Views:838

(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.

Ultra-high quality graphene powder

(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:Industry News
  • Author:
  • Origin:
  • Time of issue:2023-02-24
  • Views:838
Information

Graphene powder is divided into graphene powder, the common methods of producing graphene powder are mechanical exfoliation method, redox method and SiC epitaxial growth method, the production method of graphene thin film is chemical vapour deposition (CVD) powder production. Mechanical exfoliation is a method that uses friction and relative motion between an object and graphene to obtain a thin layer of graphene material. The method is simple to operate and the resulting graphene usually maintains an intact crystal structure.

In the early days, British scientists used transparent tape to peel off layers of natural graphene to obtain graphene powder, which was also classified as a mechanical peeling method. This method was once considered inefficient and could not be used for large-scale industrial production. Graphene paste is supposed to be a mixture, for example, to make lithium negative electrodes, substances such as conductive agents and binders are added and then mixed with the paste to make a homogeneous paste that is applied to the surface of copper foil.

Graphene powder has been described as a "wonder material" and scientists have even predicted that graphene powder batteries will "change the 21st century". The addition of graphene to battery electrode materials can improve charging efficiency and increase battery capacity. Self-assembled 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 capacitors and electromagnetic guns. In addition, the new graphene material does not rely on precious metals such as platinum, which can effectively reduce costs and environmental impact.

Graphene powder details: 1, flake area is 100 to 400 times the diameter of similar products flake;

2, homogeneous chip size is uniform, with a clear difference from similar products. more than 80% of uniform layer instead of 1-10 layers of similar products, the number of layers is controllable;

3, strong solubility: solubility is more than 10 times than similar products, simple functional groups are based on the unique preparation of high-pass graphene technology. The products have simpler functional groups and are easier to functionalise, which can easily meet the different functional requirements of customers.

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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