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Facile Preparation of Nb₂O5@Carbon Hollow Microspheres as High-Performance Anode Materials for Lithium-Ion Batteries.

Nb₂O5@carbon hollow microspheres (Nb₂O5@CHMs) have been synthesized through a facile hydrothermal method. Results revealed that numerous urchin-shaped Nb₂O5 nanospheres were tightly and uniformly anchored on the surface of carbon hollow microspheres. Nb₂O5@CHMs with unique structure exhibited a high initial discharge capacity of 420.32 mA h·g-1 and an impressive reversible capacity of 350.15 mA h·g-1 after 100 cycles at the current density of 40 mA·g-1. The Nb₂O5@CHMs is a potential high-performance anode material for lithium ion batteries.