| abstract |
The present invention is a core-shell composite particle wherein the shell is carbon based and non-porous and the core is a porous strong aggregate comprising a plurality of silicon particles, carbon and optionally further components. Core-shell composite particles, wherein the silicon particles have an average particle size (d 50 ) of 0.5 to 5 μm, and at least 80% by weight based on the total weight of the core-shell composite particles in the core. The core-shell composite particles present. |