Amorphous metal alloy compositions for reversible hydrogen storage and electrodes made therefrom
AssigneeThe Standard Oil Company
InventorsRobert K. Grasselli, Jonathan H. Harris, Richard S. Henderson, Michael A. Tenhover
Life of this patent
Estimating the term…
Abstract
The present invention provides a novel amorphous metal alloy composition which reversibly stores hydrogen and is useful as the hydrogen storage electrode in an energy storage device. The amorphous metal alloy is made up of at least three elements with at least one element of Ag, Hg, or Pt; at least one element of Pb, Cu, Cr, Mo, W, Ni, Al, Co, Fe, Zn, Cd, Ru or Mn: and at least one element of Ca, Mg, Ti, Zr, Hf, Nb, V or Ta.
Claims32
A reversible hydrogen storage material consisting essentially of an amorphous metal alloy of the formula:
- A.sub.a M.sub.b M'.sub.c
- wherein
- A is at least one element selected from the group consisting of Ag, Hg, and Pt;
- M is at least one metal selected from the group consisting of Pb, Cu, Cr, Mo, W, Ni, Al, Co, Fe, Zn, Ru, Cd, and Mn;
- M' is at least one element selected from the group consisting of Ca, Mg, Ti, Zr, Hf, Nb, V and Ta;
- and
- wherein
- a ranges from about 0.005 to about 0.80;
- b ranges from about 0.05 to about 0.70;
- and
- c ranges from about 0.08 to about 0.95.
An electrode for reversibly storing hydrogen comprising essentially of an amorphous metal alloy of the formula:
- A.sub.a M.sub.b M'.sub.c
- wherein
- A is at least one metal selected from the group consisting of Ag, Hg and Pt;
- M is at least one metal selected from the group consisting of Pb, Cu, Cr, Mo, W, Ni, Al, Co, Fe, Zn, Ru, Cd, and Mn;
- M' is at least one of the elements selected from the group consisting of Ca, Mg, Ti, Zr, Hf, V, Nb and Ta;
- and
- wherein a ranges from about 0.005 to about 0.80;
- b ranges from 0.05 to about 0.70;
- and
- c ranges from about 0.08 to abuot 0.95.
An energy storage device comprising:
- a working electrode, a counter electrode, electrically isolated from said working electrode;
- an electrolyte in contact with the working electrode and the counter electrode, and means for collecting electrical current therefrom;
- the working electrode consisting essentially of an amorphous metal alloy of the formula:
- A.sub.a M.sub.b M'.sub.c
- wherein
- A is at least one metal selected from the group consisting of Ag, Hg and Pt;
- M is at least one metal selected from the group consisting of Pb, Cu, Cr, Mo, W, Ni, Al, Co, Fe, Zn, Ru, Cd and Mn;
- M' is at least one of the elements selected from the group consisting of Ca, Mg, Ti, Zr, Hf, V, Nb and Ta;
- and
- wherein
- a ranges from about 0.005 to about 0.80;
- b ranges from 0.05 to about 0.70;
- and
- c ranges from about 0.08 to about 0.95.
Dependencies are inferred from the claim text.