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US 4,195,989 AGranted
Hydrogen storage material
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakaharu Gamo, Yoshio Moriwaki, Toshio Yamashita, Masataro Fukuda
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakaharu Gamo, Yoshio Moriwaki, Toshio Yamashita, Masataro Fukuda
Estimating the term…
The disclosure relates to a hydrogen storage material composed of a Ti-Mn-M alloy in which M represents at least one metal selected from the group consisting of vanadium, chromium, iron, cobalt, nickel, copper and molybdenum, and which defines an alloy phase of a Laves phase having a hexagonal crystal structure of MgZn.sub.2 (C.sub.14) type and crystal lattice parameters a=4.86.about.4.90A and C=7.95.about.8.02A. The hydrogen storage material is economical and suited to practical purposes, since it readily absorbs a large amount of hydrogen at room temperature and reversibly discharges a large amount of hydrogen with safety through variations of ambient hydrogen pressure, temperature conditions or electro-chemical conditions.
A metallic material for storing of hydrogen which comprises a substance able to store hydrogen and composed of a Ti-Mn-M alloy defining an alloy phase which is substantially a Laves phase constituted by an intermetallic compound, which has a hexagonal crystal structure of the MgZn.sub.2 (C.sub.14) type, and crystal structure parameters a and c which have values in the ranges:
A hydride formed by causing hydrogen to be absorbed into a metallic material which comprises a substance able to store hydrogen and composed of a Ti-Mn-M alloy defining an alloy phase which is substantially a Laves phase constituted by an intermetallic compound, which has a hexagonal crystal structure of the MgZn.sub.2 (C.sub.14) type, and crystal structure parameters a and c which have values in the ranges:
A method of storing, transporting and preserving hydrogen comprising the steps of preparing a metallic material able to store hydrogen and composed of a Ti-Mn and M alloy defining an alloy phase which is substantially a Laves phase constituted by an intermetallic compound, which has a hexagonal crystal structure of the MgZn.sub.2 (C.sub.14) type, and crystal structure parameters a and c which have values in the ranges:
Dependencies are inferred from the claim text.