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Shape-Controlled Growth of MgH2/Mg Nano/Microstructures Via Hydriding Chemical Vapor Deposition

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Title: Shape-Controlled Growth of MgH2/Mg Nano/Microstructures Via Hydriding Chemical Vapor Deposition
Authors: Zhu, Chunyu Browse this author
Hosokai, Sou Browse this author
Matsumoto, Itoko Browse this author
Akiyama, Tomohiro Browse this author →KAKEN DB
Keywords: Hydrogen storage
Magnesium hydride
Crystal growth
Hydriding chemical vapor deposition
Issue Date: 2010
Publisher: American Chemical Society
Journal Title: Crystal Growth & Design
Volume: 10
Issue: 12
Start Page: 5123
End Page: 5128
Publisher DOI: 10.1021/cg100856n
Abstract: In this paper, we report the shape-controlled growth of MgH2/Mg nano/microstructures via hydriding chemical vapor deposition (HCVD), wherein magnesium vapor was deposited on a substrate at different temperatures ranging from 225 °C to 600 °C and H2 pressures ranging from 1 to 4 MPa. The products obtained after heating for 7, 13, and 20 h were identified by XRD and observed by SEM. The shape, size, and purity of the products strongly depended on the experimental conditions, which were classified according to the P-T equilibrium diagram for MgH2. The diagram showed six distinct areas for the products MgH2 and/or Mg having the following structures: fine and coarse powder, dendrite, root-like structure, straight and curved fibers, irregular bulk structure, and hexagonal and spherical structures. The diagram can be used quite effectively for controlling the shape of MgH2 and/or Mg, and this may lay the foundation for the mass production of nano/microsized MgH2/Mg for use in hydrogen storage or batteries.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 朱 春宇

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