Synthesis and electrochemical properties of highly crystallized CuV₂O₆ nanowires

Abstract

CuV₂O₆ nanowires were prepared via a simple hydrothermal route using NH₄VO₃ and Cu(NO₃)₂ as starting materials. The structures and electrochemical properties of CuV₂O₆ nanowires were characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results show that the CuV₂O₆ nanowires are about 100 nm in width and single crystalline grown along [001] direction. CuV₂O₆ nanowires delivered a high initial discharge capacity of 435 and 351 mA·h/g at current densities of 50 and 100 mA·h/g, respectively. The electrochemical kinetics of the CuV₂O₆ nanowires was also investigated by means of electrochemical impedance spectroscopy(EIS) and the poor rate performance was observed, which may be attributed to the low ion diffusion coefficient of the CuV₂O₆ nanowires.

Keywords

CuV₂O₆ / Nanowire / Electrochemical property

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