Methods for producing carbon from lignin

Abstract

The present invention relates to a method for producing carbon, the method comprising the steps of providing lignin having a total metal content of less than 200 ppm and subjecting it to a heat treatment at one or more temperatures in the range of 300° C. to 1500° C. to obtain carbon. The present invention also relates to carbon having a total metal content below 800 ppm, an anode for a secondary battery comprising said carbon as an active material, and the use of said carbon as an active material in an anode of a secondary battery.