<p>Lithium-ion batteries (LIBs), characterized by their high energy density and stable cycling life, have been extensively utilized in portable electronic devices such as mobile phones and computers, and they also demonstrate promising applications in electric vehicles and hybrid vehicles. Compared to commercial graphite anode materials, SnO₂ has garnered significant attention due to its high specific capacity, which can better meet the increasing demands for energy storage. However, the substantial volume expansion of SnO₂ during the charge–discharge process negatively affects its cycling stability. TiO₂ nanotube arrays (TNAs) exhibit excellent cycling stability, but their low theoretical specific capacity limits their widespread application as anode materials in lithium-ion batteries. To address these issues, this study prepared various TiO₂/Au/SnO₂ array composite electrodes by altering the loading amount of SnO₂ and systematically investigated their lithium storage performance through electrochemical characterization. The results indicate that TAS-30 can maintain a high specific capacity of 411 mAh·g⁻¹ at a current density of 0.1 A·g⁻¹. Additionally, this paper analyzed the kinetics of Li⁺ during the reaction to determine the optimal loading amount of SnO₂ in the TiO₂/Au/SnO₂ array composite electrodes. Subsequent experiments further demonstrated that capacitive behavior significantly enhanced the lithium storage performance of TAS-30, with 71.4% of the capacity originating from pseudocapacitive control at a scan rate of 10&#xa0;mV·s⁻¹. This work explores the intrinsic relationship between the loading amount of SnO₂ and the amorphous TiO₂ nanotube arrays, as well as their combined effects on electrochemical performance, providing a reference for the design and application of composite electrodes in lithium-ion batteries.</p>