Effects of Ti interlayers on microstructures and hydrogen storage capacity in Mg/Pd multilayer thin films

Hwaebong Jung; Junhan Yuh; Sungmee Cho; Wooyoung Lee

doi:10.1016/j.jallcom.2014.02.105

Effects of Ti interlayers on microstructures and hydrogen storage capacity in Mg/Pd multilayer thin films

Hwaebong Jung, Junhan Yuh, Sungmee Cho, Wooyoung Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

In this work, we examine the microstructural and hydrogen storage properties of 60 multilayer Mg/Pd and Ti/Mg/Ti/Pd films using an ultra-high-vacuum (UHV) DC magnetron sputtering system. The hydrogen absorption capacity of the Ti/Mg/Ti/Pd film was found to be 1.7, 3.5, and 4.7 wt% at 50, 100, and 150 C, respectively, while that of the Mg/Pd film was measured at significantly lower values, 0.18, 0.65, and 1.35 wt%. The hydrogen absorption capacity for the Mg/Pd and Ti/Mg/Ti/Pd films is greatly dependent upon the formation of Mg-Pd intermetallic phases, formed during the hydrogenation process. Our results demonstrate that Ti interlayers in the Ti/Mg/Ti/Pd film play a crucial role in preventing the formation of Mg-Pd intermetallic phases, which originate from the inter-diffusion of Mg and Pd atoms during hydrogenation, and thus result in an improved hydrogen storage capacity.

Original language	English
Pages (from-to)	63-66
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	601
DOIs	https://doi.org/10.1016/j.jallcom.2014.02.105
Publication status	Published - 2014 Jul 15

Bibliographical note

Funding Information:
This work was supported by the POSCO Research Project (2013Z048,), Priority Research Centers Program (2009-0093823), and the Pioneer Research Center Program (2013008070) through the National Research Foundation of Korea (NRF).

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2014.02.105

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title = "Effects of Ti interlayers on microstructures and hydrogen storage capacity in Mg/Pd multilayer thin films",

abstract = "In this work, we examine the microstructural and hydrogen storage properties of 60 multilayer Mg/Pd and Ti/Mg/Ti/Pd films using an ultra-high-vacuum (UHV) DC magnetron sputtering system. The hydrogen absorption capacity of the Ti/Mg/Ti/Pd film was found to be 1.7, 3.5, and 4.7 wt% at 50, 100, and 150 C, respectively, while that of the Mg/Pd film was measured at significantly lower values, 0.18, 0.65, and 1.35 wt%. The hydrogen absorption capacity for the Mg/Pd and Ti/Mg/Ti/Pd films is greatly dependent upon the formation of Mg-Pd intermetallic phases, formed during the hydrogenation process. Our results demonstrate that Ti interlayers in the Ti/Mg/Ti/Pd film play a crucial role in preventing the formation of Mg-Pd intermetallic phases, which originate from the inter-diffusion of Mg and Pd atoms during hydrogenation, and thus result in an improved hydrogen storage capacity.",

author = "Hwaebong Jung and Junhan Yuh and Sungmee Cho and Wooyoung Lee",

note = "Funding Information: This work was supported by the POSCO Research Project (2013Z048,), Priority Research Centers Program (2009-0093823), and the Pioneer Research Center Program (2013008070) through the National Research Foundation of Korea (NRF).",

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AU - Jung, Hwaebong

AU - Yuh, Junhan

AU - Cho, Sungmee

AU - Lee, Wooyoung

N1 - Funding Information: This work was supported by the POSCO Research Project (2013Z048,), Priority Research Centers Program (2009-0093823), and the Pioneer Research Center Program (2013008070) through the National Research Foundation of Korea (NRF).

PY - 2014/7/15

Y1 - 2014/7/15

N2 - In this work, we examine the microstructural and hydrogen storage properties of 60 multilayer Mg/Pd and Ti/Mg/Ti/Pd films using an ultra-high-vacuum (UHV) DC magnetron sputtering system. The hydrogen absorption capacity of the Ti/Mg/Ti/Pd film was found to be 1.7, 3.5, and 4.7 wt% at 50, 100, and 150 C, respectively, while that of the Mg/Pd film was measured at significantly lower values, 0.18, 0.65, and 1.35 wt%. The hydrogen absorption capacity for the Mg/Pd and Ti/Mg/Ti/Pd films is greatly dependent upon the formation of Mg-Pd intermetallic phases, formed during the hydrogenation process. Our results demonstrate that Ti interlayers in the Ti/Mg/Ti/Pd film play a crucial role in preventing the formation of Mg-Pd intermetallic phases, which originate from the inter-diffusion of Mg and Pd atoms during hydrogenation, and thus result in an improved hydrogen storage capacity.

AB - In this work, we examine the microstructural and hydrogen storage properties of 60 multilayer Mg/Pd and Ti/Mg/Ti/Pd films using an ultra-high-vacuum (UHV) DC magnetron sputtering system. The hydrogen absorption capacity of the Ti/Mg/Ti/Pd film was found to be 1.7, 3.5, and 4.7 wt% at 50, 100, and 150 C, respectively, while that of the Mg/Pd film was measured at significantly lower values, 0.18, 0.65, and 1.35 wt%. The hydrogen absorption capacity for the Mg/Pd and Ti/Mg/Ti/Pd films is greatly dependent upon the formation of Mg-Pd intermetallic phases, formed during the hydrogenation process. Our results demonstrate that Ti interlayers in the Ti/Mg/Ti/Pd film play a crucial role in preventing the formation of Mg-Pd intermetallic phases, which originate from the inter-diffusion of Mg and Pd atoms during hydrogenation, and thus result in an improved hydrogen storage capacity.

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Effects of Ti interlayers on microstructures and hydrogen storage capacity in Mg/Pd multilayer thin films

Abstract

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