A multidisciplinary combinatorial approach for tuning promising hydrogen storage materials towards automotive applications

作者：Amieiro Fonseca A; Ellis S R; Nuttall C J^*; Hayden B E; Guerin S; Purdy G; Soulie J Ph; Callear S K; Culligan S D; David W I F; Edwards P P; Jones M O; Johnson S R; Pohl A H

来源：Faraday Discussions, 2011, 151: 369-384.

DOI：10.1039/c0fd00018c

HyStorM 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% H-2 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% H-2. Further characterisation experiments are required to decipher the role of the Ti-dopant in these systems in both films and in the bulk.

• 出版日期2011