Phase-tailored synthesis of tin oxide-graphene nanocomposites for anodes and their enhanced lithium-ion battery performance

► Phase-tailored hydrothermal synthesis of tin oxide-graphene nanocomposites was realized. ► Schematic illustration was proposed considering the amount ratio of GO to Sn2+. ► Reversible capacity of 525 mA h g−1, and an ultra-low capacity loss of ∼0.3% per cycle after 90 cycles.