A multidisciplinary combinatorial approach for tuning promising hydrogen storage materials towards automotive applications
2011; Royal Society of Chemistry; Volume: 151; Linguagem: Inglês
10.1039/c0fd00018c
ISSN1364-5498
AutoresAlvaro Amieiro-Fonseca, S.R. Ellis, Christopher J. Nuttall, Brian E. Hayden, Samuel Guérin, Geraldine M Purdy, Jean-Philippe Soulié, Samantha K. Callear, Scott D. Culligan, William I. F. David, Peter P. Edwards, Martin O. Jones, Simon R. Johnson, Alexander Pohl,
Tópico(s)Superconductivity in MgB2 and Alloys
ResumoHyStorM is a multidisciplinary hydrogen-storage project aiming to synthesise and tune materials hydrogen storage properties for automotive applications. Firstly, unique high-throughput combinatorial thin-film technologies are used to screen materials' hydrogen storage properties. Then promising thin-film candidate compositions are synthesised and examined in the bulk. In this paper, we report on our results within the ternary compositions Mg–Ti–B and Ca–Ti–B. Primary screening of the Mg–Ti–B ternary identified a high capacity hotspot corresponding to Mg0.36Ti0.06B0.58, with 10.6 wt% H2 capacity. Partial reversibility has been observed for this material in the thin-film. Bulk Ti-doped Mg(BH4)2 composites show rehydrogenation to MgH2 under the conditions used. The synthesised thin-film Ca–Ti–B ternary showed only low hydrogen storage capacities. In the bulk, Ti-doping experiments on Ca(BH4)2 demonstrated reversible storage capacities up to 5.9 wt% H2. Further characterisation experiments are required to decipher the role of the Ti-dopant in these systems in both films and in the bulk.
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