Silicon monoxide (SiO) has emerged as one promising anode material for lithium-ion battery owing to its high theoretical capacity and relatively small volume change compared with silicon based anode. However, poor conductivity extremely restricts its specific capacity and cycling stability of SiO, C-SiO is most considered to be addressed this issue. Despite that, the effect of the orderly arrangements of carbon coatings on the overall electrochemical performance of SiO anode remains unclear. It is more important to explore the structure of carbon coatings on the electrochemical properties of silicon based anode. Herein, we have much improved orderly array of carbon coatings for C-SiO by introducing 3% TiO₂, and evidenced by Raman spectroscopy and HRTEM. The electrochemical results show that the TC-SiO with 3% TiO₂ exhibits striking advantages in cycling stability, high rate charge/discharge and interfacial stability properties compared with C-SiO with disorder carbon coatings. This work provides a new strategy for further improving conductivity and interfacial stability of C-Si based anode materials.

一氧化硅（SiO）由于其高理论容量和与硅基负极相比相对较小的体积变化，已成为一种有前景的锂离子电池负极材料。但是，差的电导率极大地限制了其比电容和SiO的循环稳定性，C-SiO被认为是解决了这一问题的最主要方法。尽管如此，碳涂层的有序排列对SiO阳极整体电化学性能的影响仍然不清楚。探索碳涂层的结构对硅基阳极的电化学性能更为重要。在这里，我们通过引入3％TiO ₂大大改善了C-SiO碳涂层的有序排列，并由拉曼光谱和HRTEM证明。电化学结果表明，与具有无序碳涂层的C-SiO相比，具有3％TiO ₂的TC-SiO在循环稳定性，高倍率充/放电和界面稳定性方面显示出显着优势。这项工作为进一步提高C-Si基阳极材料的电导率和界面稳定性提供了新的策略。