为改善锂离子电池负极循环性能，提高其安全性和稳定性，制备了氧化锡-碳锂离子电池负极材料。以有机聚合物碳纳米管（PNT）为前驱物骨架、沸石咪唑骨架材料-8（ZIF-8）为碳基修饰材料、纳米片状氧化锡为主体材料，合成出一种CNT@SnO₂@C纳米复合物，该材料的比表面积为125.6 m²/g。在作为锂离子电池负极材料应用时，2 A/g电流密度下循环600次，容量依然可以保持在878 mAh/g，具备优异的高比容量和持久的循环性能。

CNT@SnO₂@C nanocomposite for anode of lithium ion battery is synthesized by using polymer carbon nanotubes (PNT) as the carbon skeleton of precursor,ZIF-8 (Zeolitic imidazolate framework-8) as the carbon-based modifying material,tin oxide nanosheets as the main active material.CNT@SnO₂@C sample owns a high surface area (125.6 m²·g^-1) and high electric conductivity.When it is used as anode material for lithium ion battery,the sample shows excellent high specific capacity and long cycling performance.The composite can deliver a high reversible specific capacity of 878 mA·h·g^-1 after 600 cycles at a current rate of 2 A·g^-1.

邱立峰(1993-),男,硕士研究生,研究方向为纳米材料合成及锂离子电池正负极材料的应用,626183369@qq.com