Low-Cost Synthesis of Hierarchical V₂O₅ Microspheres as High-Performance Cathode for Lithium-Ion Batteries

Hierarchical V₂O₅ microspheres composed of stacked platelets are fabricated through a facile, low-cost, and energy-saving approach. The preparation procedure involves a room-temperature precipitation of precursor microspheres in aqueous solution and subsequent calcination. Because of this unique structure, V₂O₅ microspheres manifest a high capacity (266 mA h g^–1), excellent rate capability (223 mA h g^–1 at a current density 2400 mA g^–1), and good cycling stability (200 mA h g^–1 after 100 cycles) as cathode materials for lithium-ion batteries