Si/C COMPOSITES AS ANODE MATERIALS FOR LITHIUM ION BATTERIES

摘要

PROBLEM TO BE SOLVED: To provide a process for producing an Si/C composite based anode for a lithium ion battery without depending on a petrochemical system, and the lithium ion battery.SOLUTION: A process for producing an Si/C composite includes the steps of providing an active material containing micro-sized or nano-sized silicon particles; providing lignin; bringing the active material into contact with a C precursor by crushing or physically mixing lignin; and carbonizing the active material by converting lignin into inorganic carbon at a temperature of at least 400°C in an inert gas atmosphere.