▎ 摘　　要

NOVELTY - Preparation of tin/reduced graphene oxide nanocomposite, involves dissolving a tin salt and a carbon source in water to obtain a solution, transferring to a reaction kettle, heating and reacting to obtain tin dioxide/carbon, washing, and drying, ultrasonically dispersing graphene oxide in water, adding tin dioxide/carbon and a reducing agent, ultrasonically mixing, transferring the mixed solution to a reaction kettle, heating and reacting to obtain a three-dimensional product, washing, freeze-drying, and processing the product in a tubular furnace in a reducing atmosphere. USE - Preparation of tin/reduced graphene oxide nanocomposite for cathode of lithium ion batteries (all claimed). ADVANTAGE - the method uses economical raw materials, is simple and economical, and provides nanocomposite, which provides cathode having excellent cycle stability, with high yield.