Tin dioxide-carbon nanotube (SnO₂-CNT) composite films were synthesized on copper substrates by a one-step process using hot filament chemical vapor deposition (HFCVD) with methane gas (CH₄) as the carbon source. The composite structural properties enhance the surface-to-volume ratio of SnO₂demonstrating a desirable electrochemical performance for a lithium-ion battery anode. The SnO₂and CNT interactions were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared-attenuated total reflectance (ATR-FTIR) spectroscopy. Comprehensive analysis of the structural, chemical, and electrochemical properties reveals that the material consists of self-assembled and highly dispersed SnO₂nanoparticles in CNT matrix. The process employed to develop this SnO₂-CNT composite film presents a cost effective and facile way to develop anode materials for Li-ion battery technology.