Morphology Engineering of Self‐Assembled Nanostructured CuCo₂O₄ Anodes for Lithium‐Ion Batteries

The electrochemical kinetics and output capacity of active electrode materials are significantly influenced by their surface structure. Herein, the template‐free morphological evolution of CuCo 2 O 4 is reported, which is achieved by controlling the nucleation and growth rate during the hydrothermal process and evaluating its anode performance. The charge‐transfer resistance and specific surface area of the fabricated CuCo 2 O 4 anode films are influenced by the viscosity of the solvent used. The optimized mesoporous nanosheet anode exhibits a high specific discharge capacity (1547 mAh g –1 ) at 0.1 A g –1 and an excellent restoring capability (≈91%); it retains 88% of the initial capacity with a coulombic efficiency of ≈99% even after 250 discharge–charge cycles. The superior lithium‐ion energy storage performance of this anode is due to its electrochemically favorable porous 2D morphology with large Brunauer–Emmett–Teller (BET) specific surface area and pore volume, resulting in enhanced Li + storage and intercalation property.