title: A multidisciplinary combinatorial approach for tuning promising hydrogen storage materials towards automotive applications.
abstract: 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% 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.
authors.affiliation: Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading, RG4 9NH, UK.
authors.forename: A
authors.initials: A
authors.lastname: Amieiro-Fonseca
authors.forename: S R
authors.initials: SR
authors.lastname: Ellis
authors.forename: C J
authors.initials: CJ
authors.lastname: Nuttall
authors.forename: B E
authors.initials: BE
authors.lastname: Hayden
authors.forename: S
authors.initials: S
authors.lastname: Guerin
authors.forename: G
authors.initials: G
authors.lastname: Purdy
authors.forename: J P
authors.initials: JP
authors.lastname: Soulié
authors.forename: S K
authors.initials: SK
authors.lastname: Callear
authors.forename: S D
authors.initials: SD
authors.lastname: Culligan
authors.forename: W I F
authors.initials: WI
authors.lastname: David
authors.forename: P P
authors.initials: PP
authors.lastname: Edwards
authors.forename: M O
authors.initials: MO
authors.lastname: Jones
authors.forename: S R
authors.initials: SR
authors.lastname: Johnson
authors.forename: A H
authors.initials: AH
authors.lastname: Pohl