V2O5-Au nanocomposite film cathode with enhanced electrochemical performance for lithium-ion micro batteries

The growth of pure V₂O₅ and V₂O₅-Au films were performed by pulsed laser deposition (PLD) technique. XRD shows that V₂O₅ belongs to orthorhombic. SEM, TEM and HRTEM images demonstrate the V₂O₅ is nanosheets, and the Au nanoparticles are anchored on the V₂O₅ nanosheets, forming a 165.3 nm dense V₂O₅-Au nanocomposite film. Compared to pure V₂O₅ film electrodes, the V₂O₅-Au nanocomposite film electrodes behave an admirable electrochemical performance with better rate and cycling performance, and impedance are weakened. The results imply that the Au nanoparticles incorporation improves capacity and accelerates the charge transfer process, and thus contribute to enhance batteries performance.