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US 6,616,891 B1Granted
High capacity transition metal based hydrogen storage materials for the reversible storage of hydrogen
AssigneeEnergy Conversion Devices, Inc.
InventorsKrishna Sapru, Zhaosheng Tan, Mohamed Bazzi, Subramanian Ramachandran, Stanford R. Ovshinsky
Life of this patent
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Abstract
A reversible hydrogen storage alloy capable of absorbing approximately 4 weight percent hydrogen and desorbing up to 2.8 weight percent hydrogen at temperatures up to 100° C. The hydrogen storage alloy is generally composed of titanium, vanadium, chromium, and manganese. Additional elements such as zirconium, yttrium, iron, nickel, zinc, molybdenum, and tantalum may also be included in the alloy.
Claims24
A hydrogen storage alloy comprising:
- 29-54 atomic percent titanium;
- 5-45 atomic percent vanadium;
- 15-50 atomic percent chromium;
- 9.75-15 atomic percent manganese;
- and
- greater than 0.0 up to 22 atomic percent of one or more of the elements selected from the group consisting of zirconium, yttrium, iron, nickel, zinc, molybdenum, and tantalum.
3 more elements
A hydrogen storage alloy comprising:
- 29-54 atomic percent titanium;
- 5-45 atomic percent vanadium;
- 15-50 atomic percent chromium;
- 0-18 atomic percent manganese;
- and
- molybdenum.
3 more elements
A hydrogen storage alloy comprising:
- 29-54 atomic percent titanium;
- 5-45 atomic percent vanadium;
- 27.5-50 atomic percent chromium;
- 9.75-15 atomic percent manganese.
1 more element
Dependencies are inferred from the claim text.