Abstract
In this paper, we review our recent results on hydrogen storage, structural and optical properties in multi-layered Pd/Mg thin films. The thin films were prepared using a RF associated magnetron sputtering method, in which the structure in Mg layer was controlled into columnar-like textures with several tens nanometer in diameter by optimizing the sputtering conditions. The results obtained indicate that hydrogen of ∼5 mass% absorbs at 373 K in Mg under a hydrogen pressure of 0.1 MPa in multi-layered Pd/Mg films and the hydrogen desorbs at 360 K in vacuum. Such excellent hydrogen storage properties are explained by cooperative phenomena that hydrogen displays in nano-composite interface boundary regions between the Pd and Mg films. In addition, we experimentally confirmed at the first time that the rare earth and nickel free two-layered Pd/Mg film displayed optical transparency upon hydrogenation.
| Original language | English |
|---|---|
| Pages (from-to) | 2721-2727 |
| Number of pages | 7 |
| Journal | Materials Transactions |
| Volume | 43 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2002 Nov |
Keywords
- Cooperative phenomena
- Hydrogen storage
- Magnesium-palladium nano-composite
- Multi-layered thin film
- Optical transparency
- Thermal desorption spectroscopy
- Transmission electron microscopy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering