• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/037/07/1731-1736

    • Keywords

       

      Electronic structure calculations; MgH2; formation energy; hydrogen storage capacity; DFT; first principle calculations.

    • Abstract

       

      Using ab initio calculations, we predict the improvement of the desorption temperature and the hydrogen storage properties of doped Mg-based hydrides such as,Mg15AMH32 (AM = Ca, Sr and Ba) as a super cell 2 × 2 × 2 of MgH2. In particular, the electronic structure has been obtained numerically using the all-electron full-potential local-orbital minimum-basis scheme FPLO9.00-34. Then, we discuss the formation energy calculations in terms of the material stabilities and the hydrogen storage thermodynamic properties improvements. Among others, we find that the stability and the temperature of desorption decrease without reducing significantly the high storage capacity of hydrogen. Moreover, it has been observed that such a doping procedure does not affect the electronic behavior as seen in MgH2, including the insulator state in contrast with the transition metal hydrides, which modify the electronic structure of pure MgH2.

    • Author Affiliations

       

      M Bhihi1 M Lakhal1 S Naji1 2 H Labrim3 A Belhaj4 A Benyoussef1 5 6 A Elkenz1 M Loulidi1 B Khalil1 O Mounkachi5 M Abdellaoui1 E K Hlil7

      1. LMPHE (URAC 12), Faculté des Sciences, Université Mohammed V-Agdal, Rabat 10000, Morocco
      2. Department of Physics, Faculty of Science, Ibb University, Ibb 1120, Yemen
      3. Centre National de l’Energie, des Sciences et des Techniques Nucléaires, Rabat 10000, Morocco
      4. Département de Physique, Faculté Polydisciplinaire, Université Sultan Moulay Slimane, Béni Mellal 23000, Morocco
      5. Institute of Nanomaterials and Nanotechnology, MAScIR, Rabat 10000, Morocco
      6. Hassan II Academy of Science and Technology, Rabat 10000, Morocco
      7. Institut Néel, CNRS-UJF, 38042 Grenoble cedex 9, France
    • Dates

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.