摘要：【中文】本发明提供了一种锡掺杂金红石TiO₂复合材料的制备方法及其应用。通过离子交换和取代，结合在管式炉里面的后期煅烧，即可得到Sn‑TiO₂，接着与聚多巴胺包覆，碳化之后与氧化石墨烯复合，然后在进行氧化石墨的还原，即制得锡掺杂金红石TiO₂复合材料。该锡掺杂金红石TiO₂复合材料应用于锂离子电池负极材料。本发明利用简单的离子交换和吸附以及碳材料改性得到锡掺杂金红石TiO₂复合材料。将其作为储能电极材料时，展现了高容量，循环稳定性能好。本发明方法提供了一种无机金属掺杂钛酸盐的合成策略，为获得高容量，高倍率，循环稳定性的材料提供借鉴意义。 【EN】The invention provides a tin-doped rutile TiO₂A preparation method and application of the composite material. Sn-TiO can be obtained by combining ion exchange and substitution and post-calcination in a tubular furnace₂Then coating with polydopamine, carbonizing, compounding with graphene oxide, and reducing graphite oxide to obtain tin-doped rutile TiO₂A composite material. The tin-doped rutile TiO₂Composite materialThe method is applied to the cathode material of the lithium ion battery. The invention obtains the tin-doped rutile TiO by utilizing simple ion exchange and adsorption and carbon material modification₂A composite material. When the material is used as an energy storage electrode material, the material shows high capacity and good cycle stability. The method provides a synthesis strategy of inorganic metal doped titanate, and provides reference significance for obtaining materials with high capacity, high multiplying power and cycling stability.