Metal hydride alloy with catalyst particles and channels
AssigneeOvonic Battery Company, Inc.
InventorsKwo Young, Benjamin Reichman, Michael A. Fetcenko
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Abstract
The performance of an ABx type metal hydride alloy is improved by adding an element to the alloy which element is operative to enhance the surface area morphology of the alloy. The alloy may include surface regions of differing morphologies.
Claims10
A hydrogen storage material for use as anode in an electrochemical cell which also contains a cathode and an electrolyte, said hydrogen storage material having an interface oxide region with channels distributed therein, said channels having interior surfaces;
- said oxide region characterized by the presence of metallic, catalytic particles formed on said channel surfaces and said hydrogen storage material characterized by low charge transfer resistance at cold temperature:
- wherein at least some of the catalytic nickel particles on said channel surfaces are directly exposed to said electrolyte interiorly of said channels, whereby the electrolyte reacts on the surface of the catalyst as though no oxide interface was present.
A hydrogen storage material having a bulk metal region and an interface oxide region, said interface region having a plurality of catalytic channels defined therethrough, said channels having a cross-sectional dimension in the range of 25-150 angstroms and a length which is greater than said cross-sectional dimension, said channels including a plurality catalytic sites formed on and extending from the interior surfaces thereof.
An ABx (1≦x≦5) metal hydride material having an interface oxide region, said interface region having a plurality of catalytic channels disposed therethrough, said channels having an average cross-sectional dimension in the range of 25-150 angstroms and a length which is greater than said cross-sectional dimension, said channels having catalytic particles formed on and extending from the interior surfaces thereof.
Dependencies are inferred from the claim text.