通过简单的刮涂工艺，将含有氯化亚锡、聚丙烯腈（PAN）和聚甲基丙烯酸甲酯（PMMA）的二甲基甲酰胺（DMF）溶液涂覆在铜箔表面，然后在真空下煅烧，制备出具有三维网络结构的SnO₂-C复合涂层，对其微观结构进行了表征，并对该网络结构SnO₂-C复合涂层一体化负极材料的性能进行了测试。结果表明：该复合涂层具有由宽度为0.1~1 μm的碳基枝条相互连接而形成的连续三维网络结构，该碳基枝条由无定型结构的碳基体、尺寸为10~150 nm的SnO₂纳米粒子和尺寸为1~5 nm的微孔组成；当该复合涂层直接用作锂离子电池的负极时，在50 mA·g^-1电流密度下经过100次循环后其比容量为642 mAh·g^-1，在此循环过程中未出现比容量衰减的现象，在10 A·g^-1电流密度下其比容量仍为50 mA·g^-1电流密度下比容量的43%，该复合涂层表现出良好的电化学性能。

The dimethylformamide (DMF) solution containing SnCl₂, polyacrylonitrile (PAN) and poly(methyl methacrylate) (PMMA) was coated on the surface of Cu foils by simple knife coating, and then calcined in vacuum. The SnO₂-C composite coating with three dimensional network structure was fabricated successfully. The micro-structure of the composite coating was characterized and the performance of network structure SnO₂-C composite coating as lithium ion batteries anode was tested. The results show that the coating presented the continuous network structure formed by interconnected carbon based branches with width of 0.1-1 μm which consisted of amorphous carbon matrix, SnO₂ nano-particles with size of 10-150 nm and micro-pores with size of 1-5 nm. When the composite coating was employed as anodes of lithium ion batteries, after 100 times cycling under current density of 50 mA·g^-1, the composite coating electrodes exhibited specific capacity of 642 mAh·g^-1 without capacity fading during the cycling. The specific capacity of the electrodes under current density of 10 A·g^-1 was 43% of the specific capacity under current density of 50 mA·g^-1. The composite coating had the good electrochemical performance.