# US 2014/0193639 A1 · Metal hydride alloy with catalytic channels

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- Number: US 2014/0193639 A1
- Document ID: US20140193639A1
- Status: Published application
- Kind: A1
- Application number: 13/735,489
- Filed: 2013-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: Ovonic Battery Company, Inc.
- Applicants: Ovonic Battery Company, Inc.
- Inventors: Kwo Young; Benjamin Reichman; Michael A. Fetcenko
- Web page: https://patentgrep.com/patent/US20140193639A1

## CPC

- C01B 3/0084: Solid storage media characterised by their shape, e.g. porous compacts or hollow particles
- C01B 3/0031: Intermetallic compounds; Metal alloys
- Y02E 60/32: Hydrogen storage
- Y10T 428/26: Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T 428/268: Monolayer with structurally defined element
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## 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.

## Claims

### Claim 1

A hydrogen storage material having a bulk region and an interface oxide region, said interface region comprising metallic catalytic particles supported by a support matrix and voids, said metallic catalytic particles and said voids being distributed throughout at least one portion of the interface region, said volume fraction of voids in said interface region is greater than 5% and said voids being elongated channels having a cross-sectional dimension of greater than 20 Angstroms and a length greater than said cross-sectional dimension.

### Claim 2 (depends on 1)

The hydrogen storage material of claim 1, wherein the cross-sectional dimension of the channels is in the range of 25-250 angstroms.

### Claim 3 (depends on 1)

The hydrogen storage material of claim 1, wherein the metallic catalytic particles include Ni or Ni alloyed with another metal present in the bulk region.

### Claim 4 (depends on 3)

The hydrogen storage material of claim 3, wherein the metallic catalytic particles have an average diameter of less than 100 angstroms.

### Claim 5 (depends on 4)

The hydrogen storage material of claim 4, wherein the metallic catalytic particles have an average diameter of 5-15 angstroms.

### Claim 6 (depends on 1)

The hydrogen storage material of claim 1, wherein said material is selected from the group consisting of AB2, AB5, AB3 or A2B7.