Abstract: H₂TiO₃（HTO） is one of the most promising type of lithium-ion sieves due to its high theoretical adsorption capacity, excellent stability, and strong selectivity. However, its industrial application was hindered by unsatisfactory practical adsorption capacity and cycling stability. A silicon carbide （SiC）-doped lithium ion adsorbent was prepared by the solid-phase method using highly stable SiC as the dopant. The resulting material was characterized using a range of techniques to evaluate its crystallinity, morphology, hydrophilicity, specific surface area, and elemental surface valence states. Furthermore, its adsorption performance was investigated in terms of adsorption isotherms, thermodynamics, kinetics, and cyclic stability. The results indicated that after moderate SiC doping, the HTO-SiC-0.03 particles demonstrated a more uniform size distribution, improved hydrophilicity and specific surface area, as well as a significant increase in oxygen vacancies, thereby enhancing the lithium ion adsorption capacity. At 298 K, the adsorption capacity of HTO-SiC-0.03 could reach 40.91 mg·g⁻¹, which was significantly higher than that undoped sample （32.96 mg·g⁻¹）. The Li⁺ adsorption on HTO-SiC-0.03 was spontaneous and endothermic, following Langmuir isotherm model and pseudo-second-order kinetic model. After five adsorption-desorption cycles, the adsorption capacity of HTO-SiC-0.03 amounted to 95.1 % of the initial value, showing high stability.