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Vanadium pentoxide (V 2 O 5 ) as the cathode material has caused great concern in metal-ion batteries due to the diverse valence states of vanadium. However, structural instability and poor electrical and ionic conductivity significantly limit its application as high-efficiency electrodes. Herein, V 2 O 5  nanosheet is directly grown on electrospun carbon nanofibers (V 2 O 5 @CNFs) by a hydrothermal method as a cathode for sodium-ion batteries. The carbon fiber skeleton can improve not only the conductivity but also buffer the volume variations of the electrodes. As the cathode of NIBs, the as-prepared V 2 O 5 @CNFs exhibits an excellent capacity of 178 mAh g −1  at 25 mA g −1  and 60 mAh g −1  at 1000 mA g −1 .

A superior cathode of sodium-ion battery: A V2O5 nanosheets anchored on carbon nanofibers