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Nanocrystalline aluminium hydrides for hydrogen storage

机译:用于储氢的纳米晶氢化铝

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摘要

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. percent 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.
机译:纳米晶氢化铝(铝酸盐)是用于PEM燃料电池应用的潜在储氢材料。除了氢的可逆量外,基于铝酸盐的存储材料的动力学和热力学性质仍需优化。新型Ti催化剂在改善氢吸收和释放动力学方面取得了进展。然而,可用的基础材料具有氢含量低或热力学性质不利的缺点。铝酸镁有可能交换高达6.9 wt。第一个转化步骤中氢的百分比首次测量表明在PEM燃料电池的工作温度下,高于100 bar的平衡解吸压力。

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