公开(公告)号：SE546875C2

公开(公告)日：2025-03-04

申请号：SE2250425

申请日：2022-04-04

Applicant: STORA ENSO OYJ

Inventor： STOCKWELL ULRIKA ,  OLSSON VILHELM

IPC: C07G1/00 ,  B29B9/08 ,  B29B13/02 ,  B29B13/06 ,  C01B32/318 ,  H01M4/133 ,  H01M4/583

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