A comparative study on the hydrogen absorption of thin films at room temperature deposited on non-porous glass substrate and nano-porous anodic aluminum oxide (AAO) template

作者：Norek Malgorzata^*; Stepniowski Wojciech J; Polanski Marek; Zasada Dariusz; Bojar Zbigniew; Bystrzycki Jerzy

来源：International Journal of Hydrogen Energy, 2011, 36(18): 11777-11784.

DOI：10.1016/j.ijhydene.2011.06.046

• Hydrogen storage
• Hydrogen absorption kinetics
• Thin films
• Stress relaxation
• Switchable mirrors

The influence of different morphology of the thin films deposited on the non-porous glass and nano-porous anodic aluminum oxide (AAO) substrates on the hydrogen absorption at room temperature was studied. A well-known sandwich-like Pd/Mg/Pd film was investigated. It is observed that the film deposited on the porous AAO template demonstrates a better hydrogen absorption in the H(2) pressure range 10-600 mbar with respect to the same film supported by the non-porous glass substrate. Moreover, the layer grown on the AAO, owing to its specific morphology inherited from the nano-porous substrate, has revealed its resistance toward stress accumulation caused by the lattice expansion, showing no buckle-to-crack network formation upon the hydrogen uptake. This interesting feature is expected to improve the cycling properties and structural stability of the system, and may help to investigate better the interaction of the H(2) with metal.

• 出版日期2011-9