MESOPOROUS SILICON/CARBON COMPOSITE FOR USE AS LITHIUM ION BATTERY ANODE MATERIAL AND PROCESS OF PREPARING THE SAME

摘要

A silicon/carbon composite comprises mesoporous silicon particles and carbon coating provided on the silicon particles, wherein the silicon particles have two pore size distribution of 2-4 nm and 20-40 nm. A process of preparing the silicon/carbon composite comprises the steps of preparing mesoporous silicon particles via a mechanochemical reaction between SiCl4 and Li33Si4 under ball milling and subsequent thermal treatment and washing process, and coating the mesoporous silicon particles with carbon. An anode for lithium ion battery comprises the silicon/carbon composite. A lithium ion battery comprises the silicon/carbon composite.

主权项

1. A silicon/carbon composite, comprising:
mesoporous silicon particles; and a carbon coating disposed on the silicon particles, the silicon particles having two pore size distributions of 2-4 nm and 20-40 nm.