We report the synthesis of three-dimensional (3D) urchin-like Nb 2 O 5 microstructures by a facile hydrothermal approach with subsequent annealing treatment. As anode materials for lithium-ion batteries, the 3D urchin-like Nb 2 O 5 microstructures exhibit superior electrochemical performance with excellent rate capability as well as long-term cycling stability. The electrode delivers high capacity of 131 mA h g −1 after 1000 cycles at a high current density of 1 A g −1 . The excellent electrochemical performance suggests the 3D urchin-like Nb 2 O 5 microstructures may be a promising anode candidate for high-power lithium ion batteries.
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Liu et al. (2016) studied this question.