Method for preparing graphite nanofibres from biogas

Abstract

The present invention relates to the production of synthetic graphite fibres of nanometric size using a carbon material from a renewable source, which is obtained together with a hydrogen-rich combustible gas in the process for recovery of biogas by means of catalytic breakdown. Said material, which consists of carbon nanofilaments is gradually transformed into nanofibres with a graphite structure by means of a thermal treatment in an inert atmosphere at temperatures which are no lower than 2400 ºC, in part due to the presence of metal residues that catalyse the process. Said synthesised carbon materials have high value added and many applications, including the use thereof as an anode in ion-lithium batteries, which are essential components of electronic devices such as mobile telephones or portable computers.