Hydrogen storage properties of Mg/Cu and Mg/Pd laminate composites and metallographic structure

被引：0
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作者：
Takeichi, Nobuhiko [1 ]
Tanaka, Koji [1 ]
Tanaka, Hideaki [1 ]
Ueda, Tamotsu T. [2 ]
Kamiya, Yoshihisa [2 ]
Tsukahara, Makoto [2 ]
Miyamura, Hiroshi [3 ]
Kikuchi, Shiomi [3 ]
机构：
[1] National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan
[2] IMRA Material R and D Co. Ltd., 5-50 Hachiken-cho, Kariya, Aichi, 448-0021, Japan
[3] University of Shiga Prefecture, 2500 Hatsusaka-cho, Hikone, Shiga, 522-0057, Japan
来源：
Journal of Alloys and Compounds | 2007年 / 446-447卷
关键词：
The Mg-based laminate composites; Mg/Cu and Mg/Pd; were prepared by repetitive-rolling; which is considered to suit for mass production. Mg/Cu laminate composites (Mg/Cu = 2) absorb and desorb hydrogen reversibly at 473 K; and the laminate composites have a better reaction kinetics than melting-casting alloys. TEM observations revealed that the as-rolled Mg-based laminate composite had the sub-micrometer-ordered layered structure with dense dislocations and vacancies. After initial activation and dehydrogenation process; the samples have kept the sub-micrometer-ordered laminate structure with dense dislocations and vacancies. The nano-structure of Mg-based laminate composites leads to lower hydrogen desorption temperature and better kinetics; which would contribute to achieve high capacity hydrogen storage materials. In Mg/Pd laminate composites (Mg/Pd = 6); Mg6Pd is formed during initial activation process. This Mg6Pd also can store hydrogen reversibly through the disproportionation and recombination process. © 2007 Elsevier B.V. All rights reserved;
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页码：543 / 548
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