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

摘要

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 Hthium-ion batteries.