SnO2/graphene composites with self-assembled alternating oxide and amine layers for high Li-storage and excellent stability.

An alternating stack (SG/GN) consisting of SnO2-functionalized graphene oxide (SG) and amine-functionalized GO (GN) is prepared in solution. The thermally reduced SG/GN (r(SG/GN)) with decreased micro-mesopores and completely eliminated macropores, results in a high reversible capacity and excellent capacity retention (872 mA h g⁻¹ after 200 cycles at 100 mA g⁻¹) when compared to a composite without GN.