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Hydrogen storage property of MgH2synthesized by hydriding chemical vapor deposition

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.jallcom.2007.04.020
Keywords
  • Metal Hydrides
  • Nano-Structured Materials
  • Vapor Deposition
  • Microstructure
Disciplines
  • Chemistry

Abstract

Abstract As reported previously, MgH 2 synthesized by hydriding chemical vapor deposition (HCVD) was made of single crystals with nano-fibrous figures. Therefore, the hydrogen storage property of the HCVDed MgH 2 is expected to reflect its structural character. In this study, we examined the hydrogen storage property of MgH 2 synthesized by HCVD. Results of pressure-composition-isotherm (PCT) measurement showed that the HCVDed MgH 2 reversibly absorbed and desorbed hydrogen as much as 7.6 mass% without any activation treatment retaining the fiber shape. Each hydrogenation/dehydrogenation rate was great because hydrogen diffused through a short pathway in a radial direction of the fiber.

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