Chinese Journal of Applied Chemistry

Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (12): 1402-1407.DOI: 10.3724/SP.J.1095.2011.00246

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Electrochemical Hydrogen Storage Properties of Ti-Based Quasicrystalline Composite Materials

LIU Wanqiang1,2*, ZHANG Shanshan1,2, WANG Limin2   

  1. (1.School of Materials Science and Engineering,Changchun University of
    Science and Technology,Changchun 130022;
    2.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022)
  • Received:2011-06-13 Revised:2011-07-25 Published:2011-12-10 Online:2011-12-10

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Abstract:

The Ti1.4V0.6Ni and V5Ti9Zr26.2Ni38Cr3.5Co1.5Mn15.6Al0.4Sn0.8 alloys were prepared via an arc-melting method followed by the melt-spinning technique. We systematically investigated the structures and electrochemical hydrogen storage performances of Ti1.4V0.6Ni+20%(mass fraction) ball-milled VTZN composite materials. It was found that the icosahedral quasicrystal, FCC(Ti2Ni) and BCC structural solid solution coexisted in the resultant composite material. When using such composite materials as Ni-MH battery anodes, the discharge current densities were about 30 mA/g at 303 K, the maximal electrochemical discharge capacity reaches 310 mA·h/g. In addition, the electrode of Ti1.4V0.6Ni and VTZN composite showed high-rate discharge ability compared with that of Ti1.4V0.6Ni.

Key words: Ti1.4V0.6Ni alloy, Quasicrystal, composite material, Electrochemical, Hydrogen Storage

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