<p>In this study, two LiFePO₄-based composite cathode materials, LiFePO₄@C and LiFePO₄@rGO, were synthesized and comparatively evaluated to enhance the electrochemical performance of lithium-ion batteries. LiFePO₄@C consists of LiFePO₄ particles coated with a uniform conductive carbon layer, whereas LiFePO₄@rGO employs reduced graphene oxide (rGO) to construct a three-dimensional conductive framework around the active particles. Structural and morphological analyses confirmed good particle dispersion and intimate interfacial contact in both composites. Notably, the LiFePO₄@rGO architecture provided more efficient electron and lithium-ion transport pathways. Electrochemical testing demonstrated the superior performance of LiFePO₄@rGO, which delivered a reversible capacity of 181 mAh·g⁻¹ at 0.1&#xa0;C, exceeding the theoretical capacity of pristine LiFePO₄. This enhancement is ascribed to additional pseudocapacitive contributions and reversible Li⁺ storage on rGO surfaces. Moreover, the LiFePO₄@rGO electrode exhibited outstanding rate capability up to 10&#xa0;C and excellent cycling stability, retaining 95.8% of its capacity after 1000 cycles at 5&#xa0;C. Importantly, LiFePO₄@rGO achieved a lithium-ion diffusion coefficient of 8.57 × 10⁻¹¹ cm²·s⁻¹, significantly higher than values reported for comparable systems, further confirming the role of rGO in accelerating Li⁺ kinetics. These findings highlight the synergistic effect of rGO integration and position LiFePO₄@rGO as a highly promising cathode material for high-rate and long-life lithium-ion batteries.</p>