Harmonized Bronze/Anatase/Rutile Multiphase Conjugated TiO ₂ ‐Carbon Nanoarchitecture Anode from Ti‐Based Metal‐Organic Frameworks for Enhanced Lithium‐Ion Battery Performance

The increasing demand for high‐rate and long‐life lithium‐ion batteries (LIBs) has highlighted the need for anode materials with fast kinetics, high capacity, and excellent stability. Titanium dioxide (TiO 2 ) is a promising candidate because of its safe and stable structure. However, it suffers from poor conductivity and slow lithium‐ion diffusion. Herein, a multiphase TiO 2 ‐carbon nanocomposite is reported that is composed of bronze (B), anatase (A), and rutile (R) phases termed BAR TiO 2 , which is synthesized via the two‐stop pyrolysis of Ti‐based metal‐organic frameworks (Ti‐MOFs). This process allows control of the surface potential and TiOH interactions, leading to densely packed BAR interfaces embedded within a conductive carbon matrix. The BAR electrode delivers a high reversible capacity of 391 mAh g −1 at 0.3 A g −1 and retains 163 mAh g −1 over 9000 cycles at 10 A g −1 . This outstanding performance stems from the synergistic combination of the fast lithium charge transport in TiO 2 ‐R, the pseudocapacitive behavior of nanoscale TiO 2 ‐B, and the structural robustness of TiO 2 ‐A. In addition, MOF‐derived carbon enhances the electronic conductivity and interfacial stability. The findings demonstrate that multiphase engineering combined with rational carbon integration is a promising approach for overcoming the intrinsic limitations of TiO 2 ‐based anodes in advanced LIB technologies.