Large-scale preparation of graphene material proved feasible

Graphene is a tougher material than carbon fiber and has great commercial potential, but so far, researchers have only used it in a small area and cannot be used on a large scale. A preparation method demonstrated by researchers of the US Department of Energy Oak Ridge National Laboratory can overcome the obstacles in the application of graphene commercial scale.

According to Oak Ridge National Laboratory's official website, the research team led by Ivan Varasok has prepared a 2-inch square monoatomic-thickness carbon composite that eliminates the problem of graphene sheet agglomeration and can be used in polymers. Use less graphene material for better conductivity. The results of this study were published in the most recent issue of Applied Materials and Interface.

The nanocomposite structure of most polymers will fuse small pieces of graphene or other carbon nanomaterials because they are difficult to disperse uniformly in the polymer. The team of Vala'ouk produced a larger piece of graphene material. He said: “We use a vapor deposition method to allow graphene-containing nanocomposite laminates to have excellent conductivity while reducing the amount of graphene added to one-fifth of the most advanced samples. This is graphene. Material is the key to enhancing competitiveness in the market."

The researchers said that this approach will usher in a new era of flexible electronics technology, and the angle at which graphene materials are studied and the methods that will ultimately be used will change. Varasok said: "Previous studies could only show the superior mechanical properties of graphene at the microscopic scale, and now we have extended it to larger scales that are expected to be applied in the market."

If Valauk and his team can further reduce costs and prove their scalability, they envisage their application in the field of aerospace structural inspection, combustion improver, anti-icing and electrical conductivity, catalysts and wear resistance of automotive components. Coatings, photovoltaics and energy storage in the energy sector, filtration, catalysts and coatings for manufacturing industries. (Reporter Fang Linlin)

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