• Yu Zhang

      Articles written in Journal of Chemical Sciences

    • Significant improvement of electrochemical performance of Cu-coated LiVPO4F cathode material for lithium-ion batteries

      Yu Zhang Xiaolan Bai Cuiling Li

      More Details Abstract Fulltext PDF

      In this paper, we reveal that the intrinsic low electronic conductivity of the pristine LiVPO4F is overcome with conductive Cu-coating. The existence of nano-Cu is confirmed with X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The morphology and particle size are observed by scanning electron microscopy (SEM). Galvanostatic charge/discharge test indicates that Cu coating is effective to improve the discharge capacity, cycle performance and rate capability. Analysis of electrochemical impedance spectra (EIS) shows that the addition of nano-Cu markedly decreases the charge transfer resistance of the pristine LiVPO4F electrode.

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