System and method for creating catalyst OBD limit parts for exhaust aftertreatment applications
US-9528420-B2 · Dec 27, 2016 · US
Hydrogen detecting sensor
US9846146B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9846146-B2 |
| Application number | US-201514752960-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 28, 2015 |
| Priority date | Oct 8, 2014 |
| Publication date | Dec 19, 2017 |
| Grant date | Dec 19, 2017 |
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Abstract
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Disclosed herein is a hydrogen detecting sensor that includes a sulfide-metal catalyst, such that hydrogen gas can be detected visibly with naked eyes. Particularly, the hydrogen detecting sensor includes a substrate, a sulfide layer formed on the substrate and chemically discolored when exposed to hydrogen, and a metal catalytic layer formed on the sulfide layer.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydrogen detecting sensor, comprising a substrate, a sulfide layer formed on the substrate and discolored when exposed to hydrogen, and a metal catalytic layer deposited on the sulfide layer, wherein the sulfide layer includes one or more sulfides selected from the group comprising of CdS, SnS, MoS, ZnS, SeS, FeS, PdS, and CuS, and wherein the metal catalytic layer includes one or more of metal particles selected from the group comprising of palladium (Pd) and platinum (Pt). 2. The hydrogen detecting sensor according to claim 1 , wherein the sulfide layer is chemically discolored by a chemical reaction with the hydrogen. 3. The hydrogen detecting sensor according to claim 1 , wherein the substrate is selected from the group consisting of glass, flexible plastic, silicon, quartz, fused silica, stainless steel, mica, carbon, carbon nano-tube, polymer, ceramic, and porcelain enamel. 4. The hydrogen detecting sensor according to claim 1 , wherein the sulfide layer is deposited on the substrate using a chemical bath deposition (CBD) method or a dry deposition method. 5. The hydrogen detecting sensor according to claim 1 , wherein the sulfide layer is formed in a thin film by reacting copper sulfate and sodium thiosulfate at a mole ratio of about 1:5 and by bath-depositing. 6. The hydrogen detecting sensor according to claim 1 , wherein a thickness of the sulfide layer ranges from about 40 nm to about 50 nm. 7. The hydrogen detecting sensor according to claim 1 , wherein the sulfide layer is deposited on the entire region of the substrate such that the substrate is not exposed. 8. The hydrogen detecting sensor according to claim 1 , wherein the metal catalytic layer is formed using a hydrothermal method or e-beam evaporation (EBD). 9. The hydrogen detecting sensor according to claim 1 , wherein a thickness of the metal catalytic layer ranges from about 4 nm to about 5 nm. 10. The hydrogen detecting sensor according to claim 1 , wherein the metal catalytic layer is formed on a portion of the sulfide layer such that at least other portion of the sulfide layer is exposed.
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Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Concentration; Density (H01M8/04492 takes precedence) · CPC title
Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title
Cross-Sectional Technologies · mapped topic
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- What does patent US9846146B2 cover?
- Disclosed herein is a hydrogen detecting sensor that includes a sulfide-metal catalyst, such that hydrogen gas can be detected visibly with naked eyes. Particularly, the hydrogen detecting sensor includes a substrate, a sulfide layer formed on the substrate and chemically discolored when exposed to hydrogen, and a metal catalytic layer formed on the sulfide layer.
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Ajou Univ Industry-Academic Cooperation Foundation
- What technology area does this patent fall under?
- Primary CPC classification G01N31/10. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 19 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).