A Bowknot-like RuO2 quantum dots@V2O5 cathode with largely improved electrochemical performance

Abstract

Bowknot-like RuO₂ quantum dots@V₂O₅ nanomaterials have been synthesized by a facile hydrothermal method followed by annealing treatment, which exhibit largely enhanced electrochemical performance. Especially, the RuO₂ quantum dots@V₂O₅ cathode delivers 160 mA h g⁻¹ at 1000 mA g⁻¹ after 100 cycles, which is much higher than 86 mA h g⁻¹ of the pure V₂O₅ cathode.