Fluorinated Graphdiyne‐Modified Graphite: Boosting Ion Diffusion for Advanced Lithium‐Ion Battery Anodes

Although graphite is widely used as the primary anode material in commercial lithium‐ion batteries, it suffers from inherent limitations in specific capacity, rate capability, and long‐term cycling stability. To overcome these challenges, this study successfully introduced fluorinated graphdiyne into graphite anodes via a simple and cost‐effective physical mixing approach. These findings indicate that fluorinated graphdiyne modified graphite (F‐G) effectively reduce the energy barrier for lithium ions migration, enhance ion diffusion within graphite electrodes, significantly reduce interfacial impedance, and suppress harmful side reactions. As a result, the cycle durability of the battery is improved. This work provides theoretical insights into the regulatory mechanism of modification on the electrochemical performance of graphite anodes, offering a new perspective for the design of high‐performance lithium‐ion battery materials, with certain scientific and practical significance.