Hydrogen absorption in magnesium based crystalline thin films

Date

2006-08-01

Author

Akyildiz, Hasan
Ozenbas, Macit
Öztürk, Tayfur

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A study is carried out for hydrogenation of Mg based thin films produced via thermal evaporation. Films produced were pure Mg, Mg capped with Au-Pd, Mg-Cu co-deposited and Mg-Cu multilayered. The films under the experimental conditions employed were crystalline with columnar grains with some degree of preferred orientation. In multi-component systems, the films in the as-deposited state were made of individual elements, but upon hydrogenation at temperatures greater than 473K, the elements react with each other yielding the intermetallic phases. The study showed that, of the systems studied in this work, Mg-Cu multilayer yielded the most favorable result as useful storage system, for Mg portion of the film can be converted totally into MgH2, this occurring at temperatures not greater than 473 K. The study implies that if the as-deposited structure were to be used and preserved as hydrogen storage medium, there is a narrow temperature window for hydrogenation. (c) 2005 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

Subject Keywords

Hydrogen storage, Thermal evaporation, Thin films, Co-deposited film, Multilayer film, Mg, Mg-Cu, Au-Pd

URI

https://hdl.handle.net/11511/31783

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

DOI

https://doi.org/10.1016/j.ijhydene.2005.11.003

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

H. Akyildiz, M. Ozenbas, and T. Öztürk, “Hydrogen absorption in magnesium based crystalline thin films,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, pp. 1379–1383, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31783.