One-step, simple, and green synthesis of tin dioxide/graphene nanocomposites and their application to lithium-ion battery anodes

•A one-step, simple and green approach to synthesis SnO2/graphene nanocomposites was proposed using a supercritical CO2 method.•The SnO2/graphene nanocomposites was used as an anode, which exhibit extreme high lithium storage capacity and well cycling performance.