Graphene

In simple terms graphene is a sheet of a single layer (monolayer) of carbon atoms, tightly bound in a hexagonal honeycomb lattice. In more complex terms, graphene is an allotrope of carbon in the form of a plane of sp2-bonded atoms with a molecular bond length of 0.142 nanometres.

Silicon composite with Graphene

silicon

Silicon is a chemical element with symbol Si and atomic number 14. It is a hard and brittle crystalline solid with a blue-grey metallic lustre; and it is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it.

Silicon anode materials for lithium batteries