A Study to Explore the Suitability of LiNiCoAlO/Silicon@Graphite Cells for High-Power Lithium-Ion Batteries.

Silicon-graphite (Si@G) anodes are receiving increasing attention because the incorporation of Si enables lithium-ion batteries to reach higher energy density. However, Si suffers from structure rupture due to huge volume changes (ca. 300%).

Towards a High-Power Si@graphite Anode for Lithium Ion Batteries through a Wet Ball Milling Process.

Silicon-based anodes are extensively studied as an alternative to graphite for lithium ion batteries. However, silicon particles suffer larges changes in their volume (about 280%) during cycling, which lead to particles cracking and breakage of the solid electrolyte interphase. This process induces continuous irreversible electrolyte decomposition that strongly reduces the battery life.