US3620844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for the activation of hydrogen
Assignee: VARTA AG
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Filing: 1963-03-04
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Granted: 1971-11-16
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Expires: 1983-03-04
Abstract
Abstract A fuel cell comprising an electrode designed for the electrochemical utilization of gaseous hydrogen, said electrode comprising a metallic body of a heavy metal lattice capable of absorbing and diffusing the hydrogen, and at least a large portion of one side of said body being in intimate contact with a dissimilar metal hydrogenation catalyst layer, consisting of a metal hydride, the catalyst of said layer being selected from the group consisting of uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said lattice being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys, and a conduit delivering the gaseous hydrogen to said one side of the metallic body.
Inventors
- 👤 Ewald Wicke
- 👤 Albrecht Kuessner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:16
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; H; H01; H01M; H01M4/00; H01M4/86; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/047; C01B2203/048; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
16 words
In the system of claim 1, wherein the continuous metal lattice is a pore-free metal sheet.
Claim 2
Dependent Claim
21 words
In the system of claim 1, wherein the metal lattice is selected from the group consisting of palladium and palladium-silver alloys.
Claim 3
Dependent Claim
21 words
In the system of claim 1, wherein the metal lattice is selected from the group consisting of tantalum and tantalum alloys.
Claim 4
Dependent Claim
136 words
A hydrogen electrode for a fuel cell, comprising a tubular member having two open ends, one open end being capable of being connected to a source of hydrogen, a foil of metal having a multitude of crevices of molecular dimensions capable of dissolving the hydrogen at temperatures not exceeding room temperature, said foil being mounted over and closing the other tube end, and a dissimilar metallic hydrogenation catalyst layer in intimate contact with the metal foil in the interior of the tube, said catalyst layer defining a multitude of crevices of molecular size, the catalyst of said layer being selected from the group consisting of uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said lattice being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys.
Claim 5
Independent Claim
125 words
A system for separating hydrogen from a gaseous mixture containing hydrogen, comprising a continuous metal lattice wall capable of dissolving the hydrogen at temperatures not exceeding room temperature, a dissimilar metal hydrogenation catalyst layer for diffusing the hydrogen through the layer into the metal lattice, the latter being in intimate contact with at least one surface of the wall and defining a multitude of crevices of molecular size, the catalyst of said layer being selected from the group consisting of uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said lattice being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys, and a source of said gaseous mixture supplying the mixture to said one surface.
Claim 6
Dependent Claim
118 words
A fuel cell comprising an electrode designed for the electrochemical utilization of gaseous hydrogen, said electrode comprising a metallic body of a heavy metal lattice capable of absorbing and diffusing the hydrogen, and at least a large portion of one side of said body being in intimate contact with a dissimilar metal hydrogenation catalyst layer, consisting of a metal hYdride, the catalyst of said layer being selected from the group consisting of uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said lattice being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys, and a conduit delivering the gaseous hydrogen to said one side of the metallic body.
Claim 7
Independent Claim
84 words
A system for separating hydrogen by electrolysis comprising a continuous metal lattice wall cathode capable of dissolving the evolved hydrogen at temperatures not exceeding room temperatures and a dissimilar metal hydrogenation catalyst layer in intimate contact with said continuous metal lattice, the catalyst of said layer being selected from the group consisting of uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said lattice being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys.
Claim 8
Dependent Claim
81 words
A process for the recovery of hydrogen from a gaseous mixture comprising the steps of contacting such gaseous mixture with a first side of a metallic film selected from the group consisting of tantalum, palladium, and silver-palladium alloys, said first side being coated with a dissimilar metal hydride selected from the group consisting or uranium, titanium, zirconium, thorium, and cerium hydrides; permeating the hydrogen through said metallic film; and removing such permeated hydrogen from the opposite side of said metallic film.
Claim 9
Dependent Claim
92 words
A metallic body having an imperforate metal surface layer defining a multitude of crevices of molecular dimension permeable to hydrogen said imperforate metal surface layer being in intimate contact with a dissimilar metal hydrogenation catalyst layer which defines a multitude of crevices of molecular dimension, the catalyst of said catalyst layer being selected from the group consisting of: uranium hydride, titanium hydride, thorium hydride, cerium hydride, and zirconium hydride and the metal of said imperforate metal surface layer being selected from the group consisting of tantalum, tantalum alloys, palladium and palladium-silver alloys.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |