The Wadsley-Roth structure of TiNb2O7 (TNO) offers a favorable framework for fast Li-ion diffusion, making it a promising candidate for high-power anode materials in lithium-ion batteries (LIBs). However, its inherently low electronic conductivity, due to a wide bandgap (2.92 eV), limits its electrochemical performance. To address this limitation, we introduced a CuO coating onto micro-sized TNO particles. The CuO coating promotes the formation of a Li2O-rich solid electrolyte interphase (SEI) layer during cycling, which not only enhances ion transport but also reduces SEI layer resistance. Additionally, Cu2+ doping improves electronic conductivity by introducing additional charge carriers. As a result, CuO-TNO maintained a high reversible capacity of 234.5 mAh/g after 100 cycles at 0.5 C and achieved a capacity retention of 94.3% at 5 C in a half-cell with an electrode density of 2.3 g/cm3.