Development of hydrogen storage materials for application to energy needs. Final report

Technical Report · Mon Oct 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/6408902· OSTI ID:6408902

Liu, J.; Magee, C. B.

The following alloy systems were screened: Ti-, Y-, and Ca-base alloys; AB/sub 2/, Laves phase structure type intermetallic compounds; CrB (B/sub f/) structure type intermetallic compounds; borides; intermetallic compounds with AB/sub 3/ and AB/sub 4/ stoichiometries; and RE-Ni system alloys. Ti-base alloys seem to be the most promising candidates. These types of alloys do not need a high hydrogen pressure during absorption or for the thermal cycling process for alloy activation. They can readily absorb hydrogen up to 3.75 wt % at room temperature. However, the 25/sup 0/C desorption isotherms show that most of the alloy-hydrogen systems in this family are quite stable. High-temperature-assisted desorptions show that about 2 wt % of the hydrogen absorbed at room temperature can be released at about 200/sup 0/C. Compositional adjustments in an attempt to destabilize these families of alloys were made. The effects of alloy additions of Fe, Co, Ni, Cr, Pd, Al, or Si were investigated as to their influence on hydride behavior. While the other alloy systems studied were not as promising as the Ti-base alloys in terms of hydrogen occlusion capacities, their hydriding characteristics are interesting and lead to a better understanding of metal hydride formation in general. Theoretical studies on the relationships between intermetallic compound structure and hydride formation were made from the geometric point of view. Four intermetallic compound structures were studied in terms of the types, members, and sizes of interstitial holes; the clustering of these holes; and the relationships between these holes, or clusters of holes, to the formation of hydrides of these compounds.

• Research Organization: Denver Univ., CO (USA). Dept. of Metallurgy and Materials Science
• DOE Contract Number: AS02-78ET26910
• OSTI ID: 6408902
• Report Number(s): DOE/ET/26910-T1; ON: DE81026225
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
36 MATERIALS SCIENCE
HYDROGEN STORAGE
HYDRIDES
BORIDES
CALCIUM BASE ALLOYS
EVALUATION
INTERMETALLIC COMPOUNDS
LAVES PHASES
NICKEL BASE ALLOYS
RARE EARTH ALLOYS
STOICHIOMETRY
TITANIUM BASE ALLOYS
YTTRIUM BASE ALLOYS
ALLOYS
BORON COMPOUNDS
CALCIUM ALLOYS
HYDROGEN COMPOUNDS
NICKEL ALLOYS
STORAGE
TITANIUM ALLOYS
YTTRIUM ALLOYS
080201* - Hydrogen- Chemisorption Storage
360105 - Metals & Alloys- Corrosion & Erosion