Chinese Journal of Applied Chemistry

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Synthesis of Vanadium Pentoxide Hollow Microspheres and Application as Cathode in Rechargeable Mg Batteries

DU Xinchuanab,HUANG Gangab,WANG Liminac*()   

  1. aState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry,CAS,Changchun 130022,China
    bUniversity of Chinese Academy of Science,Beijing 130049,China
    cChangzhou Institute of Energy Storage Materials & Devices,Changzhou,Jiangsu 213000,China
  • Received:2015-07-21 Published:2015-12-01 Online:2015-12-01
  • Contact: WANG Limin
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.20111061)

Abstract:

With carbon spheres(CS) as the template, vanadium pentoxide(V2O5) hollow microspheres were synthesized by the solvothermal reaction of vanadium oxytriisopropoxide(VOT). The structure, morphology and component of V2O5 hollow microspheres were characterized by scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results reveal that V2O5 hollow microspheres are perfectly generated with the diameter of ~1.5 μm and the wall thickness of ~100 nm. As a cathode material for rechargeable Mg batteries, the initial discharge capacity is up to 140 mA·h/g at the rate of 0.2 C and maintains 110 mA·h/g after 20 cycles.

Key words: vanadium pentoxide, hollow microspheres, rechargeable magnesium batteries, cathode material