Silicon (Si) is regarded as a great promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity and low lithium storage potential. However, the practical application of pure silicon is greatly limited by its low electrical conductivity and large volume expansion. It is well known that the modification ofsilicon negative materials with carbon tubes is a good strategy to overcome the low conductivity and poor cycling stability of silicon anode. In this work, the APOCs@Si composite is successfully synthesized by 1-aminopyrene (AP) modified oxidized carbon nanotubes (OCs) compounded silicon nanoparticles under ultrasonication-stirring condition. The APOCs@Si electrode presents a considerable reversible capacity of 913.7 mAh·g⁻¹ with a stable structure after 610 cycles at a current density of 0.5A g⁻¹, and the first reversible capacity is 3543.0 mAh g⁻¹ at 0.1A g⁻¹. The physico-chemical properties indicate that the incorporation of AP and OCs builds the interwoven CNTs networks, which serve as a matrix to buffer the volume expansion of silicon and boost the electronic conductivity of the electrode, to achieve remarkable capacity and cycle performance of APOCs@Si electrode. These remarkable results have further showed AP modified OCs as a buffer matrix significantly improve the cycle performance of silicon anode materials.

硅（Si）因其高理论容量和低锂储存潜力而被认为是一种很有前途的锂离子电池（LIBs）负极材料。然而，纯硅的电导率低、体积膨胀大，极大地限制了其实际应用。众所周知，用碳管对硅负极材料进行改性是克服硅负极电导率低和循环稳定性差的好策略。在这项工作中，在超声搅拌条件下，1-氨基芘（AP）修饰的氧化碳纳米管（OCs）复合硅纳米颗粒成功合成了APOCs@Si复合材料。APOCs@Si电极表现出相当大的可逆容量，为913.7 mAh·g ^-1与610次循环后的稳定的结构以0.5A g的电流密度^-1，并且所述第一可逆容量是3543.0毫安克^-1在0.1A克^-1。理化性质表明，AP和OCs的结合构建了相互交织的CNTs网络，作为基质缓冲硅的体积膨胀并提高电极的电子电导率，从而实现APOCs的显着容量和循环性能@硅电极。这些显着的结果进一步表明，AP 改性 OCs 作为缓冲基质显着提高了硅负极材料的循环性能。