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      https://www.ias.ac.in/article/fulltext/jcsc/131/09/0098

    • Keywords

       

      Ti-V alloy; BCC solid solution; hydrogen storage; kinetics

    • Abstract

       

      This paper deals with hydrogen storage properties of Ti-V based BCC solid solution incorporated with Fe. The alloy with composition Ti2FeV was prepared by arc melting method. X-ray diffraction (XRD) and energy dispersive X-ray analysis studies confirmed formation of solid solution phase with uniform composition and BCC structure. SEM studies revealed the formation of irregular shaped particles with size in the range of few microns up on hydrogenation of the parent alloy. The alloy shows maximum hydrogen storage capacity of 3.41 wt.% at 20 bar and 303 K and the thermodynamic parameters established near roomtemperature suitability of the alloy for solid state hydrogen storage applications. Hydrogenation kinetics is found to be quite fast and detailed kinetic analysis were done to underscore the hydrogenation mechanism. Activation energy during the initial stage of hydrogenation is found to be 30.8 kJ/mol. The value decreases to14.4 kJ/mol for extended duration of hydrogenation, and this is explained based on difference in rate determining steps existing at different time scales

    • Author Affiliations

       

      TAPAS KUMAR DAS1 2 ASHEESH KUMAR1 PRIYANKA RUZ1 SEEMITA BANERJEE1 3 V SUDARSAN1 3

      1. Chemistry Division Bhabha Atomic Research Centre, Mumbai 400 085, Maharashtra, India
      2. UM-DAE-Centre for Excellence in Basic Sciences, Health Centre, Mumbai University, Kalina Campus, Mumbai 400 098, Maharashtra, India
      3. Homi Bhabha National Institute, Mumbai 400 094, Maharashtra, India
    • Dates

       
  • Journal of Chemical Sciences | News

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