Hydrogen detecting sensor

Patent metadata

Field	Value
Publication number	US-2016103107-A1
Application number	US-201514752960-A
Country	US
Kind code	A1
Filing date	Jun 28, 2015
Priority date	Oct 8, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

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

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.

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 includes one or more sulfides selected from the group consisting of CdS, SnS, MoS, ZnS, SeS, FeS, PdS, and CuS.

5 . The hydrogen detecting sensor according to claim 4 , wherein the sulfide layer is deposited on the substrate using a chemical bath deposition (CBD) method or a dry deposition method.

6 . The hydrogen detecting sensor according to claim 4 , 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.

7 . The hydrogen detecting sensor according to claim 1 , wherein a thickness of the sulfide layer ranges from about 40 nm to about 50 nm.

8 . 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.

9 . The hydrogen detecting sensor according to claim 1 , wherein the metal catalytic layer includes one or more of metal particles selected from the group consisting of palladium (Pd), platinum (Pt), ruthenium (Ru), manganese (Mg), nickel (Ni), and gold (Au).

10 . The hydrogen detecting sensor according to claim 1 , wherein the metal catalytic layer is formed using a hydrothermal method or e-beam evaporation (EBD).

11 . 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.

12 . 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.

13 . A vehicle part that comprises a hydrogen detecting sensor according to claim 1 .

14 . The vehicle part of claim 13 is a hydrogen storage tank, a high pressure regulator, a tube having a joint, a valve for hydrogen gas, or a stack enclosure for a fuel cell in fuel cell vehicles.

Assignees

• Hyundai Motor Co Ltd
• Ajou Univ Ind Acad Coop Found

Inventors

• Noh Yong Gyu
• Bae Ho June
• Seo Hyung Tak
• Lee Yeong An
• Kalanur Shankara S

Classifications

• G01N31/10 Primary

  using catalysis · CPC title

• H01M8/0271

  Sealing or supporting means around electrodes, matrices or membranes · CPC title

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M8/04104

  Regulation of differential pressures · CPC title

• H01M8/04201

  Reactant storage and supply, e.g. means for feeding, pipes · CPC title