Paper Title:
Comparison between Mg/Cu Super-Laminates and Mg2Cu Powder in Microstructure and Hydrogen Storage Properties
  Abstract

Super-laminates have been attracting attention since co-authors Ueda et al. reported that Mg/Cu super-laminates showed reversible hydrogenation and dehydrogenation at 473K. The Mg/Cu super-laminates were prepared by a repetitive fold and roll method. Initial activation at 573 K led the super-laminates to absorb hydrogen at 473K. TEM observations of micro/nano-structures in the super-laminates and Mg2Cu powder were performed in order to clarify the process of hydrogenation and dehydrogenation at 473K. The as-rolled Mg/Cu super-laminates have laminated structures in size of sub-micrometer thickness composed of Mg and Cu layers with dense lattice defects. The super-laminates after initial activation keep laminated structure and have uniformly distributed pores with a sub-micrometer diameter. It is considered that these micro/nano-structures of Mg/Cu super-laminates lead to lower dehydrogenation temperature and better kinetics.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1581-1584
DOI
10.4028/www.scientific.net/MSF.561-565.1581
Citation
K. Tanaka, N. Takeichi, H. Tanaka, N. Kuriyama, T. T. Ueda, M. Tsukahara, H. Miyamura, S. Kikuchi, "Comparison between Mg/Cu Super-Laminates and Mg2Cu Powder in Microstructure and Hydrogen Storage Properties", Materials Science Forum, Vols. 561-565, pp. 1581-1584, 2007
Online since
October 2007
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