Ingenieure demonstrieren eine kostengünstigere und umweltfreundlichere Methode zur Herstellung von hochwertigem Graphen durch Mahlen und Flash-Joule-Erhitzen von Erdnussschalen

Hi r/science, sharing this study on a new method for creating graphene using peanut shells, which our researchers have developed: [https://linkinghub.elsevier.com/retrieve/pii/S2666821126000682](https://linkinghub.elsevier.com/retrieve/pii/S2666821126000682)

Peanut shells are first heated to around 500°C for five minutes to remove impurities and convert the shells into a carbon-rich char material. That char is then subjected to flash joule heating, in which a flash of electricity rapidly raises the temperature to around 3000°C for just a few milliseconds – this instantaneously rearranges the carbon atoms into single layers of graphene.

The new process can be completed in around 10 minutes and requires substantially less energy usage than commercial methods used today. The researchers‘ calculations indicate that their method could produce a kilogram of graphene for just US$1.30 in energy.

Professor Guan Yeoh, who led the team, noted that a wide range of other organic waste could potentially be used to produce similar results.

Let us know if you have any questions!