Abstract
In this work, we have investigated the microstructural and hydrogen storage properties of a 60 layer film of Pd(40 nm)/Ti(x nm)/Mg(360 nm)/Ti(x nm) (x = 10, 20, 30, 40, and 50) using an ultra-high vacuum DC magnetron sputtering system. The highest hydrogen absorption capacity of the Pd/Ti/Mg/Ti film was 4.46 wt% for x = 50. The hydrogen absorption rate accelerated remarkably with increased thickness of the Ti layer, from 209 min for x = 10 to 39 min for x = 40 - overall, an increase by a factor of ∼5. These results demonstrate that the Ti layer in the Pd/Ti/Mg/Ti films serves as a blocking layer preventing the formation of Mg Pd intermetallic phases and provides additional diffusion paths for hydrogen atoms, which leads to enhanced hydrogen storage properties.
| Original language | English |
|---|---|
| Pages (from-to) | 203-206 |
| Number of pages | 4 |
| Journal | Journal of Alloys and Compounds |
| Volume | 635 |
| DOIs | |
| Publication status | Published - 2015 Jun 25 |
Bibliographical note
Funding Information:This work was supported by the POSCO Research Project and Priority Research Centers Program ( 2009-0093823 ) through the National Research Foundation of Korea (NRF).
Publisher Copyright:
© 2015, Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry