Abstract:Although SiO anode has high specific capacity and reasonable working voltage, it still faces the common problems of silicon-based anode materials such as low initial Coulomb efficiency, large volume expansion (~160%) and poor conductivity, which seriously hinders its large-scale commercial application in lithium-ion battery (LIBs). Among many metal oxides, titanium oxides anods have been reported many times in recent years to improve the electrochemical performance of SiO due to its small volume change during charge and discharge and excellent lithium storage capacity and thermal stability after lithiation. Above all, based on the microstructure and lithiation mechanism of SiO, this paper briefly summarizes the cases of composite modification of SiO and many metal oxides,; Secondly, it focuses on the research work of titanium oxides modify SiO anode, stressing the induction and analysis of TiO2 and TiO2-x modified SiO anode, and summarizes the mechanism of titanium oxides improving the electrochemical performance of SiO and the structure-activity relationship between modification process and electrochemical performance. In the end, the realization of the goal of commercialization of SiO-based anode with high energy density is prospected: making full use of relevant software algorithms to simulate the system with the lowest chemical complexity, which is conducive to in-depth analysis of the reaction process and electrochemical mechanism; strengthening the modification of SiO anode by new low-cost titanium oxides (such as Ti2O3) is beneficial to promote the academic research and commercial application of SiO-based anode.