<p>Metal-organic frameworks (MOFs) have garnered significant attention in the energy storage field owing to their exceptional porous architectures. Herein, a novel Mn/Cu bimetallic porphyrin-based MOF (TMC) was synthesized and employed as an anode material for lithium-ion batteries. In comparison with the monometallic counterpart TC, the incorporation of Mn³⁺ into the porphyrin ring not only enhances the electronic conductivity of the material but also facilitates Li⁺ storage by providing abundant active sites. These merits endow TMC with superior electrochemical performance, including an ultrahigh reversible specific capacity (810 mAh g⁻¹ at a current density of 100 mA g⁻¹), a remarkable rate capability (301.5 mAh g⁻¹ at 3000 mA g⁻¹), and excellent long-term cycling stability (418 mAh g⁻¹ after 500 cycles at a current density of 1000 mA g⁻¹).</p>