Al-N-Compounds – Possible Materials for Hydrogen Storage


Event details

Date 21.03.2019
Hour 10:3011:30
Speaker Dr. Michael FEDERHOFF
MPI Mülheim an der Ruhr - Germany
Category Conferences - Seminars

Aluminum hydride (AlH3) by itself has already been considered as a hydrogen storage material over 50 years ago based on its high volumetric (148 g H2 L-1) and gravimetric (10.1 wt.-%) hydrogen density. Based on its low decomposition temperature and light weight, research on AlH3 confining the impractical re-hydrogenation conditions is still in progress. Attempts to stabilize AlH3 with a Lewis base, such as an amine, lead to a significant reduction of the thermodynamic hydrogenation barrier of Al. This approach enables the hydrogenation at room temperature and reasonable pressures to generate amine AlH3 adducts, called amino alanes. The influence of tertiary amines leads to stabilized phases under mild conditions offering promising properties for reversible hydrogenation.
[1]   J. Ortmeyer, A. Bodach, L. Sandig-Predzymirska, B. Zibrowius, F. Mertens, M. Felderhoff, Direct Hydrogenation of Aluminum via Stabilization with Triethylenediamine: A Mechanochemical Approach to Synthesize the Triethylenediamine AlH₃ Adduct, ChemPhysChem, 2019, DOI: 10.1002/cphc.20180109
[2]     M.B. Ley, T. Bernert, J. Ruiz-Fuertes, R. Goddard, C. Fares, C. Weidenthaler, M. Felderhoff, The plastic crystalline A15 phase of dimethylaminoalane, [N(CH3)2–AlH2]3, Chem. Commun. 2016, 52, 11649–11652.

Practical information

  • General public
  • Free


  • Prof. Andreas Züttel


  • Ivana Suter



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