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Apparatus for electrochemically generating oxygen

a generator and oxygen technology, applied in the direction of electrolysis components, electrodes with substrates, electrolysis components, etc., can solve the problems of noise and vibration, related products are attracted attention, and the conventional oxygen generation technology such as the psa method or the membrane separation method is highly expensive, and achieves the effect of simple device configuration

Inactive Publication Date: 2020-07-02
FARADAY 02 INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an electrochemical oxygen generator that uses a membrane-electrode assembly and a power supply to generate oxygen without noise or vibration. The device is simple and portable. The technical effect is a miniaturized and efficient oxygen generator that can provide oxygen in a convenient and safe manner.

Problems solved by technology

Recently, as atmospheric contamination has intensified due to environmental problems or the like, oxygen-related products are being attracted attention.
However, the conventional oxygen generating technology such as the PSA method or the membrane separation method is highly expensive due to a large size of a system due to a complicated oxygen generating process and use of a large amount of an adsorbent or the like.
In addition, in the case of these methods, since a compressor should be used, noise and vibration inevitably occur.
Accordingly, in the case of the oxygen generator using the PSA method or the membrane separation method, it is difficult to miniaturize the oxygen generator and it is difficult to popularize the oxygen generator because the oxygen generator cannot be used in a space requiring quiet operation.
In addition, the oxygen generator using the oxygen tank has advantages in that it is possible to lower the price of the oxygen generator, miniaturize the oxygen generator, and implement noise-free and vibration-free oxygen generation but has a problem in that the oxygen tank should be periodically filled with oxygen from a specialized gas company in accordance with the use of the oxygen generator.
Furthermore, the oxygen generator has a problem in that it is very inconvenient to use the oxygen generator due to the usage time of the oxygen generator being limited to the size of the oxygen tank.

Method used

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  • Apparatus for electrochemically generating oxygen
  • Apparatus for electrochemically generating oxygen
  • Apparatus for electrochemically generating oxygen

Examples

Experimental program
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embodiments

[0036]Advantages and features of the present invention and methods for accomplishing the same will be more clearly understood from embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments but may be implemented in various different forms. The embodiments are provided only to complete the present invention and to fully provide a person having ordinary skill in the art to which the present invention pertains with the category of the present invention, and the present invention will be defined by the appended claims.

[0037]Hereinafter, specific contents for carrying out the present invention will be described in detail with reference to the accompanying drawings. The same reference numeral indicates the same element regardless of the drawings. With respect to the elements referred using the term of “and / or”, each of the elements and all possible combinations of the elements are included ...

experimental example 1

[0115]On a nafion electrolyte membrane, Pt / C as a catalyst was applied on a cathode, and an iridium oxide catalyst having a nanoporous structure was applied on an anode using a spray method, a decal method, or the like.

[0116]Water was supplied to the anode through a water supply source, and oxygen was generated from water through an OER. In this case, generated hydrogen ions moved through the nation electrolyte membrane, and an ORR, through which oxygen in air is reduced to generate water, occurred at the cathode.

[0117]FIG. 5 is a graph showing a change in oxygen generation current density according to a voltage of Experimental Example 1.

[0118]In FIG. 5, Pt / C—IrO2 (Air-Water) means that Pt / C was used as a cathode catalyst, IrO2 was used as an anode catalyst, air was supplied to the cathode through a separate air supply unit, and water was supplied to the anode through a separate water supply source. Hereinafter, the expressions have the same meaning.

[0119]Referring to FIG. 5, when a...

experimental example 2

[0120]On a nafion electrolyte membrane, platinum as a catalyst was applied on a cathode, and an iridium oxide catalyst having a nanoporous structure was applied on an anode using a spray method, a decal method, or the like.

[0121]In this case, unit cell evaluation was performed in the same manner as in Experiment Example 1 described above except that the supply of water to the anode through a water supply source was cut off and the supply of air to the cathode through an air supply unit was cut off.

[0122]FIG. 6 is a graph showing a change in oxygen generation current density according to a voltage of Experimental Example 2.

[0123]In FIG. 6, Pt / C—IrO2 (Non Air-Water) means that Pt / C was used as a cathode catalyst, IrO2 was used as an anode catalyst, the supply of water to the anode through the water supply source was cut off, and the supply of air to the cathode through the air supply unit was cut off.

[0124]Referring to FIG. 6, when a voltage of 1.4 V was applied, a current density of ...

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Abstract

The present invention relates to an oxygen generating apparatus comprising: a membrane-electrode assembly including an anode connected to a first pole of a power supply device, a cathode connected to a second pole of the power supply device, and an electrolyte membrane provided between the anode and the cathode; a water supply source for supplying water to the anode; and an oxygen supply unit for supplying oxygen to the cathode, wherein oxygen (O2) is generated at the anode by using an oxygen evolution reaction (OER) and water (H2O) is generated at the cathode by using an oxygen reduction reaction (ORR). The present invention may provide an apparatus for electrochemically generating oxygen, which uses an electrochemical method and thus can generate oxygen without noise or vibration, and has a simple configuration capable of reducing the volume of the apparatus.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is the National Stage of International Application No. PCT / KR2018 / 008438, filed on Jul. 25, 2018, which claims the benefit of and priority to Korean Patent Application No. 10-2017-0094511 filed on Jul. 26, 2017 and Korean Patent Application No. 10-2018-0076331 filed on Jul. 2, 2018, which are herein incorporated by reference in their entirety.TECHNICAL FIELD[0002]The present invention relates to an electrochemical oxygen generator, and more particularly, to an electrochemical oxygen generator applicable to various fields such as in portable, domestic, medical, vehicular, or industrial oxygen generating devices, oxygen pumps, oxygen compressors, or oxygen concentrators.TECHNICAL BACKGROUND[0003]Recently, as atmospheric contamination has intensified due to environmental problems or the like, oxygen-related products are being attracted attention.[0004]In general, oxygen is an essential element for the survival of humankind, a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C25B9/10C25B11/04C25B13/08C25B1/10C25B9/23
CPCC25B9/10C25B11/0473C25B1/10C25B11/0405C25B11/0415C25B13/08Y02E60/36C25B1/04C25B9/73C25B9/23C25B11/081C25B11/031C25B11/075C25B11/091C25B11/057C25B11/054C25B11/065C25B11/077C25B11/089C25B11/051C25B11/055C25B11/073
Inventor KIM, YONG TAE
Owner FARADAY 02 INC
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