Material for hydrogen absorption and desorption

Patent · Tue Nov 09 04:00:00 EST 1982

OSTI ID:6614170

Gamo, T; Moriwaki, Y; Yamashita, T

An economical metallic material for absorption and desorption of hydrogen comprises an alloy having the general formula represented by AB/sub x/, wherein A is Ca or a metallic material which is an alloy including Ca, B is Ni or a metallic material which is an alloy including Ni, and X is in the range of 3.8-6.3, and exhibiting a hydrogen dissociation equilibrium pressure (Or plateau pressure, pressure of the plateau region of hydrogen dissociation pressure-hydride composition isotherm) below 1 atm at normal temperatures. The material of the invention very easily absorbs large amounts of hydrogen and efficiently releases it at other predetermined temperatures, pressure and electrochemical conditions, whereby it is able to store hydrogen safely, usefully and economically. It is also suitable for use especially as media for thermal energy storage such as solar energy, waste heat from the electric power generators, and iron foundries, as the alloy of this invention has a plateau pressure below 1 atm at room temperature and of several atmospheres at 35/sup 0/-100/sup 0/ C.

• Assignee: Matsushita Electric Industrial Co Ltd (Japan)
• Patent Number(s): US 4358432
• OSTI ID: 6614170
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080201* -- Hydrogen-- Chemisorption Storage
25 ENERGY STORAGE
250600 -- Energy Storage-- Thermal
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
CALCIUM ALLOYS
CALCIUM COMPOUNDS
CALCIUM HYDRIDES
DESORPTION
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN STORAGE
MAGNESIUM ALLOYS
MAGNESIUM COMPOUNDS
MAGNESIUM HYDRIDES
NICKEL ALLOYS
NICKEL COMPOUNDS
NICKEL HYDRIDES
SORPTION
SORPTIVE PROPERTIES
STORAGE
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS