New protection method for graphene-carbon nanotubes developed by the University of Surrey, UK
Researchers at the University of Surrey in the UK have now developed a revolutionary approach to protecting graphene and carbon nanotubes.
When bent and rolled into a cylinder, the ultra-thin graphene layer forms a carbon nanotube structure, which is only one-thousandth of the diameter of human hair. It has extraordinary properties, such as superior electrical conductivity and high strength. 100 times that of steel. Although widely recognized as the key to developing future battery and supercapacitor technologies, carbon nanotubes are often “toxic” by the surrounding environment and fail, causing the material to lose its catalyst performance.
Recently, in a paper published in the well-known academic journal Carbon, researchers from the University of Surrey in the UK detailed their new method of using a protective layer to cover carbon nanotube catalysts. The addition of this protective layer does not affect carbon. The element diffuses and can therefore be used to protect the catalyst from environmental pollution while protecting the carbon nanotube catalyst function. This technology allows the catalyst to be transported, stored or accurately metered for future use.
Professor Ravi Silva, Director of the Institute of Advanced Technology, said: “Protective catalyst technology has brought about breakthroughs in the availability and industrial applicability of carbon nanomaterials. For example, catalysts are destroyed due to environmental pollution, such as oxidation or corrosion. Etc. etc. can now be avoided.”
The main researcher of the project, Dr. Mohamed Ahmed of the University of Surrey, said: “The old problem of poor connection between nano-carbon materials and their substrates has now been solved by this unique technology. By fine-tuning the thickness of the protective layer, precise Controlling the carbon diffusion supply of the catalyst, the graphene layer or a more precise carbon nanotube film can be grown in selected quantities.”
“We hope to study the incredible potential of peer scientists to release carbon nanomaterials. Based on the progress we have made, I am not surprised by the progress in future technologies such as sensors, batteries and supercapacitors.”