WO2016171483A1

WO2016171483A1 - Hydrogen water production device

Info

Publication number: WO2016171483A1
Application number: PCT/KR2016/004145
Authority: WO
Inventors: 서형탁; 이상민
Original assignee: 아주대학교산학협력단
Priority date: 2015-04-21
Filing date: 2016-04-21
Publication date: 2016-10-27
Also published as: KR101788917B1; KR20160125104A

Abstract

A hydrogen water production device of the present invention comprises: a container in which water is received; an oxygen generation electrode which is arranged within the container and is formed of a carbon-based material; and a hydrogen generation electrode which is arranged within the container, is formed of a carbon-based material, and has a surface subjected to hydrophilic treatment.

Description

Hydrogen water production equipment

The present invention relates to a hydrogen water production apparatus, and more particularly to a hydrogen water production apparatus for producing hydrogen water that is electrolytic reduced water by electrolysis.

Hydrogen water was produced in May 1997 by Professor Sarahata Sanetaga of Kyushu University in a paper on the efficacy of active hydrogen published in the American Journal of Biological Biochemical and Biophysical Research Communications (BBRC). It is called "active hydrogen water" after claiming to be the most ideal substance to remove the active oxygen in the inside.

Vitamin C's antioxidant activity acts on not only free radicals that are bad for the body, but also free radicals, while free radicals in hydrogen water can selectively remove free radicals that are harmful to the body.

In Japan, the hydrogen water market currently accounts for more than 10% of the total drinking water market. In addition to the health concerns in Korea, the market is generating 50 billion won annually in Korea. The apparatus for producing hydrogen water can be classified into four types: a stick type using magnesium, an electrolysis type using electrolysis of water, a capsule type powdered calcium salt, and a method of injecting hydrogen gas into raw water.

In the case of electrolysis, platinum and titanium-plated platinum alloys are used as electrodes, and these precious metals are widely used because of their excellent efficiency and excellent stability. However, precious metals such as platinum constituting the electrode are very expensive, which lowers the price competitiveness of the hydrogen water production apparatus.

One object of the present invention is to provide a hydrogen water production apparatus that can be configured at a low cost while having a high hydrogen generation efficiency.

Hydrogen water production apparatus for an object of the present invention is a container containing water, an oxygen generating electrode disposed in the container, formed of a carbon-based material, and disposed in the container, formed of a carbon-based material, the surface is hydrophilic Treated hydrogen generating electrode.

In one embodiment, the carbon-based material is a carbon felt, carbon paper, reduced-graphene oxide (RGO) laminate, porous carbon material, graphene structure, carbon nanotubes ( a carbon nano tube) structure and / or a diode structure in which p-type RGO (p-RGO) and n-type silicon (n-Si) are bonded to each other.

In one embodiment, the surface of the carbon-based material of the oxygen generating electrode may be hydrophilic.

In one embodiment, the hydrogen generated by the electrolysis of water in the hydrogen generating electrode and the oxygen generating electrode may be dissolved in water to form hydrogen water.

In one embodiment, the minimum voltage for the electrolysis of water in the hydrogen water production apparatus may be 4V.

In one embodiment, the carbonaceous material includes a diode structure in which p-type RGO (p-RGO) and n-type silicon (n-Si) are bonded, and the minimum voltage for electrolysis of water may be 1V.

According to the apparatus for producing hydrogen water of the present invention, the hydrogen generating electrode may have a high hydrogen generation efficiency at a level similar to the case of using a noble metal electrode by using a surface-treated hydrophilic carbon electrode. Therefore, the productivity of hydrogen water can be improved by using the carbon electrode which is remarkably cheaper than a noble metal electrode as a hydrogen generating electrode. In particular, the carbon electrode in the present invention can minimize the voltage required for water decomposition can reduce the power consumption, it is possible to improve the productivity of the hydrogen water.

1 is a view for explaining a hydrogen water production apparatus according to an embodiment of the present invention.

2 is a view for explaining another hydrogen water production apparatus according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, step, operation, component, part, or combination thereof described on the specification, and one or more other features or steps. It is to be understood that the present invention does not exclude, in advance, the possibility of the presence or the addition of an operation, a component, a part, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Referring to FIG. 1, the hydrogen water producing apparatus 100 includes a vessel 110, a hydrogen generating electrode CE and an oxygen generating electrode AE disposed therein. Water 120 may be received in the vessel 110, and the hydrogen generating electrode CE and the oxygen generating electrode AE may be disposed to be submerged in the water 120.

The hydrogen generating electrode CE is a cathode that receives electrons and generates hydrogen gas HY. The hydrogen generating electrode CE is a carbon electrode made of a carbon-based material, and includes a carbon electrode whose surface is hydrophilic. The carbon-based material itself has hydrophobic surface properties, but the hydrophilic treatment of the surface increases the amount of adsorption of water molecules on the hydrogen generating electrode CE. As the number of water molecules adsorbed on the hydrogen generating electrode CE increases, the amount of hydrogen gas generated by the hydrogen generating electrode CE increases because more water molecules are electrolyzed. That is, in the hydrogen generating electrode CE, a reaction occurs as in Scheme 1 below, where the number of x may be increased (x is a natural number).

Scheme 1

Hydrophilic treatment of the hydrogen generating electrode CE may be performed by introducing an oxygen functional group into the carbon-based material. For example, the hydrophilic treatment may be performed by chemical treatment using an acidic solution, by surface treatment with oxygen radicals and hydroxyl functional groups generated by ultraviolet rays, or by using an oxygen plasma. The hydrophilic treatment method is not limited thereto, and may be performed in various ways.

Examples of the carbon-based material of the hydrogen generating electrode CE include carbon felt, carbon paper, reduced-graphene oxide (RGO) laminate, porous carbon material, graphene structure, Carbon nano tube structure can be used. These can be used individually or in combination of 2 or more, respectively. For example, as the hydrogen generating electrode CE, a laminated structure of nano structured carbon nanotubes and carbon nanosheets may be used. Alternatively, a diode structure in which p-type RGO (p-RGO) and n-type silicon (n-Si) are bonded may be used as the carbon-based material.

The oxygen generating electrode AE is an anode that loses electrons and generates oxygen gas OX. Since the oxygen generating electrode AE is formed of a carbon-based material, and the carbon-based material forming the oxygen generating electrode AE is substantially the same as that described in the hydrogen generating electrode CE, detailed descriptions thereof will be omitted. At this time, the oxygen generating electrode (AE) is formed of a carbon-based material without a separate hydrophilic treatment.

The oxygen generating electrode AE and the hydrogen generating electrode CE may be formed of the same carbon-based material or may be formed of different carbon-based materials.

Reaction like the following Reaction Formula 2 takes place in the oxygen generating electrode AE (y is a natural number).

Scheme 2

Accordingly, in the hydrogen water production apparatus 100, electrolysis of water occurs as a whole reaction as in Scheme 3 (z is a natural number), and z in Scheme 3 may also increase due to an increase in x in Scheme 1. That is, it is possible to maximize the amount of hydrogen generated in the hydrogen generating electrode (CE) of the hydrogen water production apparatus 100 according to the present invention in the entire reaction.

Scheme 3

The hydrogen water production apparatus 100 may produce hydrogen water in a state in which hydrogen gas HY generated at the hydrogen generating electrode CE is dissolved in water.

When the hydrogen generating electrode CE and the oxygen generating electrode AE are provided like the hydrogen water producing apparatus 100 of the present invention, the minimum voltage for electrolysis of water may be 4V. That is, the hydrogen water production apparatus 100 using the electrode containing the carbon-based material can electrolyze water even at a low voltage, compared to the minimum voltage of about 6 V when using the platinum electrode, the power consumption required Can be reduced.

In particular, when the carbon-based material forming the hydrogen generating electrode CE and the oxygen generating electrode AE includes a diode structure in which p-type RGO (p-RGO) and n-type silicon (n-Si) are bonded to each other, The minimum voltage for electrolysis may be 1 V.

As described above, the hydrogen generating electrode CE may maximize the adsorption amount of water molecules on the hydrogen generating electrode CE by using a surface-treated hydrophilic carbon electrode. Accordingly, the generation efficiency of the hydrogen gas HY may be high at a level similar to the case of using a noble metal electrode formed of a noble metal such as platinum. The productivity of hydrogen water can be improved by using the carbon electrode which is remarkably cheaper than a noble metal electrode as hydrogen generation electrode CE. Surface hydrophilic treatment of the carbon electrode can also be carried out at low cost as a simple process. In addition, since the voltage required for water decomposition of the hydrogen water generator 100 is low, power consumption may be reduced, and thus productivity of the hydrogen water may be improved.

Referring to FIG. 2, the hydrogen water producing apparatus 101 includes a vessel 110, a hydrogen generating electrode CE, and an oxygen generating electrode MAE disposed therein. Water 120 is contained within the vessel 110 and the other components, except for the oxygen generating electrode MAE of FIG. 2, are substantially the same as those of the hydrogen water production apparatus 100 described in FIG. Detailed description thereof will be omitted.

Oxygen generating electrode (MAE) is a carbon electrode formed of a carbon-based material, the surface is hydrophilic treatment. The carbonaceous material and the hydrophilic treatment are substantially the same as described for the hydrogen generating electrode CE of FIG. 1. That is, the hydrogen water producing apparatus 101 of FIG. 2 uses a carbon electrode in which not only the hydrogen generating electrode CE but also the oxygen generating electrode MAE is hydrophilically treated. As the oxygen generating electrode MAE uses a hydrophilic carbon electrode, the amount of adsorption of water molecules on the oxygen generating electrode MAE can be increased, thereby increasing the amount of electrolyzed water and increasing the hydrogen generating electrode CE. The amount of electrons that can be delivered increases. As a result, the total amount of hydrogen gas generated by the hydrogen water production device 101 can be maximized.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

[Description of the code]

100, 101: hydrogen water production apparatus CE: hydrogen generating electrode

AE, MAE: oxygen generating electrode 110: container

120: water

Claims

A container containing water;

An oxygen generating electrode disposed in the container and formed of a carbon-based material; And

A hydrogen generating electrode disposed in the vessel and formed of a carbon-based material, the surface of which comprises a hydrophilic treatment;

Hydrogen water production device.
The method of claim 1,

Carbon-based materials

Carbon felt, carbon paper, reduced-graphene oxide (RGO) laminates, porous carbon materials, graphene structures, carbon nanotube structures, and p-type RGO (p-RGO) and n-type silicon (n-Si) is characterized in that it comprises any one selected from the diode structure bonded,

Hydrogen water production device.
The method of claim 1,

The surface of the carbon-based material of the oxygen generating electrode, characterized in that the hydrophilic treatment,

Hydrogen water production device.
The method of claim 1,

Hydrogen generated due to electrolysis of water in the hydrogen generating electrode and the oxygen generating electrode is dissolved in water to form hydrogen water,

Hydrogen water production device.
The method of claim 1,

Characterized in that the minimum voltage for the electrolysis of water is 4 V,

Hydrogen water production device.
The method of claim 1,

The carbonaceous material includes a diode structure in which p-type RGO (p-RGO) and n-type silicon (n-Si) are bonded to each other,

Characterized in that the minimum voltage for the electrolysis of water is 1 V,

Hydrogen water production device.