Process of manufacturing an electrochemical gas sensor and electrochemical gas sensor

Patent metadata

Field	Value
Publication number	US-2025198962-A1
Application number	US-202418982438-A
Country	US
Kind code	A1
Filing date	Dec 16, 2024
Priority date	Dec 18, 2023
Publication date	Jun 19, 2025
Grant date	—

Abstract

A process of manufacturing an electrochemical gas sensor is provided and an electrochemical gas sensor is obtainable by this process. The process includes the steps of: providing a substrate, the substrate having a through opening configuration including one or more through openings formed in the normal direction of the substrate, applying electrode material to an upper surface of the substrate and/or to a lower surface of the substrate, bonding the electrode material and the substrate so that the through opening configuration is closed by the electrode material to obtain a contact surfaces configuration including one or more contacts electrically contactable on the lower surface of the substrate opposite to the upper surface.

First claim

What is claimed is:

1 . A process for producing an electrochemical gas sensor, the process comprising the steps of:
providing a substrate having a through opening configuration, wherein the through opening configuration comprises one or more through openings formed in a normal direction of the substrate; applying electrode material to an upper surface of the substrate and/or applying electrode material to a lower surface of the substrate; and bonding the electrode material and the substrate so that the through opening configuration is closed by the electrode material to obtain a contact surface configuration electrically contactable on the lower surface of the substrate opposite to the upper surface, wherein the contact surface configuration comprises one or more contact surfaces.

2 . A process according to claim 1 , wherein the bonding of the electrode material and the substrate comprises a thermal treatment of the substrate and the electrode material.

3 . A process according to claim 1 ,
wherein the substrate is configured as a gas-permeable and liquid-tight membrane, or wherein the substrate is configured as a liquid-wettable separator.

4 . A process according to claim 2 ,
wherein the substrate is configured as a gas-permeable and liquid-tight membrane, or wherein the substrate is configured as a liquid-wettable separator.

5 . A process according to claim 1 ,
wherein the substrate comprises a glass or a plastic, wherein the electrode material comprises the glass and/or a metal and/or a metal oxide and/or the plastic and/or carbon.

6 . A process according to claim 5 , wherein the metal and/or the metal oxide is selected from the group comprising: platinum, platinum oxide, gold, gold oxide, iridium, iridium oxide, silver, silver oxide, ruthenium, ruthenium oxide, rhodium, rhodium oxide, palladium, palladium oxide, copper, copper oxide and nickel.

7 . A process according to claim 5 , wherein the plastic is selected from the group comprising: PTFE, PE, PET, PP, PVC, PEEK, PFA, PVDF, PA, PU and FEP.

8 . A process according to claim 6 , wherein the plastic is selected from the group comprising: PTFE, PE, PET, PP, PVC, PEEK, PFA, PVDF, PA, PU and FEP.

9 . A process according to claim 1 , further comprising the step of providing an electrode on the substrate, wherein:
the electrode is obtained by the step of applying the electrode material to the upper surface of the substrate and/or applying the electrode material to the lower surface of the substrate, or the electrode is obtained by an application of additional electrode material to the electrode material applied to the upper side of the substrate and/or applied to the lower side of the substrate.

10 . A process according to claim 9 , further comprising the step of hydrophilization a surface of the electrode.

11 . An electrochemical gas sensor formed by a process comprising the steps of:
providing a substrate having a through opening configuration, wherein the through opening configuration comprises one or more through openings formed in a normal direction of the substrate; applying electrode material to an upper surface of the substrate and/or applying electrode material to a lower surface of the substrate; and bonding the electrode material and the substrate so that the through opening configuration is closed by the electrode material to obtain a contact surface configuration electrically contactable on the lower surface of the substrate opposite to the upper surface, wherein the contact surface configuration comprises one or more contact surfaces.

12 . An electrochemical gas sensor according to claim 11 , further comprising:
a sensor housing, wherein the substrate is connected to the sensor housing; and an electrical lead configuration, wherein the electrical lead configuration comprises one or more electrical leads, wherein the electrical lead configuration is connected to the contact surface configuration.

13 . An electrochemical gas sensor according to claim 12 , further comprising:
a diffusion barrier connected to the sensor housing and configured to hinder a passage of gas from an environment to the substrate and/or to an interior of the sensor housing; and a sealing element arranged between the substrate and the sensor housing.

14 . An electrochemical gas sensor according to claim 12 , wherein the bonding of the electrode material and the substrate comprises a thermal treatment of the substrate and the electrode material.

15 . An electrochemical gas sensor according to claim 12 ,
wherein the substrate is configured as a gas-permeable and liquid-tight membrane, or wherein the substrate is configured as a liquid-wettable separator.

16 . An electrochemical gas sensor according to claim 12 ,
wherein the substrate comprises a glass or a plastic, wherein the electrode material comprises the glass and/or a metal and/or a metal oxide and/or the plastic and/or carbon.

17 . An electrochemical gas sensor according to claim 16 , wherein the metal and/or the metal oxide is selected from the group comprising: platinum, platinum oxide, gold, gold oxide, iridium, iridium oxide, silver, silver oxide, ruthenium, ruthenium oxide, rhodium, rhodium oxide, palladium, palladium oxide, copper, copper oxide and nickel.

18 . An electrochemical gas sensor according to claim 16 , wherein the plastic is selected from the group comprising: PTFE, PE, PET, PP, PVC, PEEK, PFA, PVDF, PA, PU and FEP.

19 . An electrochemical gas sensor according to claim 12 , further comprising an electrode on the substrate, wherein:
the electrode comprises the electrode material at the upper surface of the substrate and/or the electrode material at the lower surface of the substrate, or the electrode comprises additional electrode material applied to the electrode material at the upper side of the substrate and/or at the lower side of the substrate.

20 . An electrochemical gas sensor according to claim 19 , the electrode comprises a surface that has been hydrophilized.

Assignees

• Draeger Safety Ag & Co Kgaa

Inventors

• Sick Michael
• Eckhardt Rolf
• Rittemann Steffen
• Gliech Manuel

Classifications

• G01N27/307

  Disposable laminated or multilayered electrodes (G01N27/3272 takes precedence) · CPC title

• G01N27/40

  Semi-permeable membranes or partitions · CPC title

• G01N27/308

  at least partially made of carbon · CPC title

• G01N27/304

  Gas permeable electrodes · CPC title

• G01N27/413

  Concentration cells using liquid electrolytes {measuring currents or voltages in voltaic cells} · CPC title