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

A multidisciplinary combinatorial approach for tuning promising hydrogen storage materials towards automotive applications.
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一种多学科组合方法,用于调整有前途的储氢材料以适应汽车应用。

DOI:
10.1039/c0fd00018c
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发表时间:
2011
影响因子:
3.4
通讯作者:
Amieiro-Fonseca A
Amieiro-Fonseca A
中科院分区:
化学2区
文献类型:
--
作者:
Amieiro-Fonseca A

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HyStorM是一个多学科的储氢项目,旨在为汽车应用合成和调整材料的储氢性能。首先,采用独特的高通量组合薄膜技术筛选材料的储氢性能。然后合成有前途的薄膜候选组合物并在体中进行检测。在本文中,我们报告了我们的结果在三元组合物Mg-Ti-B和Ca-Ti-B。初步筛选Mg-Ti-B三元体系发现了一个高容量热点,对应于Mg0.36Ti0.06B0.58, H2容量为10.6 wt%。在薄膜中观察到该材料的部分可逆性。在此条件下,块状掺ti的Mg(BH4)2复合材料表现出了MgH2的再加氢反应。所合成的薄膜Ca-Ti-B三元化合物的储氢能力较低。在Ca(BH4)2上进行的大量ti掺杂实验表明,可逆存储容量高达5.9 wt% H2。需要进一步的表征实验来破译钛掺杂在这些系统中的作用,无论是在薄膜中还是在体中。
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.
DOI: --
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