Nanocrystalline aluminium hydrides for hydrogen storage

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2004-04-25 DOI:10.1016/j.mseb.2003.10.036

Maximilian Fichtner, Jens Engel, Olaf Fuhr, Oliver Kircher, Oliver Rubner

引用次数: 73

Abstract

Nanocrystalline aluminium hydrides (alanates) are potential hydrogen storage materials for PEM fuel cell applications. Beside the reversible amount of hydrogen, kinetic and thermodynamic properties of alanate-based storage materials have still to be optimised. Progress was made in improving the kinetics of hydrogen uptake and release by a novel Ti catalyst. The available base materials, however, suffer from the low hydrogen content or unfavourable thermodynamic properties. Magnesium alanate has the potential to exchange up to 6.9 wt.% of hydrogen in its first transformation step. First measurements indicate equilibrium desorption pressures above 100 bar at the working temperatures of a PEM fuel cell.

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用于储氢的纳米晶氢化铝

纳米晶氢化铝(丙酸盐)是PEM燃料电池中潜在的储氢材料。除了氢的可逆性外，丙酸盐基存储材料的动力学和热力学性质仍有待优化。研究了一种新型钛催化剂在改善氢吸收和氢释放动力学方面取得的进展。然而，现有的基础材料受到低氢含量或不利的热力学性质的影响。丙酸镁在其第一个转化步骤中有可能交换高达6.9 wt.%的氢。首先测量表明，在PEM燃料电池的工作温度下，平衡解吸压力高于100巴。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.