KR102204669B1 - Hydrogen production system using acid-base solution - Google Patents

Abstract

A hydrogen production device is disclosed that generates hydrogen and electricity by supplying an acid solution and a base solution to an electrolyte portion of a hydrogen production device. Since the hydrogen production device can generate hydrogen and electricity using waste acid and/or waste base, it may be economical because it does not require the application of external voltage, and is environmentally large by neutralizing and discharging waste acid and/or waste base. It can be something that contributes.
In addition, electrical energy generated by continuously supplying the waste acid and/or waste base to the hydrogen production device can be stored in energy storage devices such as capacitors, secondary batteries, flow batteries, etc., and then used as a power source for other industries, It is very efficient.

Description

Hydrogen production device using acid-base solution {HYDROGEN PRODUCTION SYSTEM USING ACID-BASE SOLUTION}

The present invention relates to a hydrogen production device for generating hydrogen and electricity by supplying an acid solution and a base solution to an electrolyte portion of a hydrogen production device.

In general, hydrogen has recently attracted great attention due to its various uses including a clean energy source, and a method for efficiently producing such hydrogen has been studied in various and in depth not only domestically but also globally.

Accordingly, the main method of producing hydrogen is to obtain fossil fuels such as methane gas through steam reforming, and then purify and use them, but in recent years, water is electrolyzed to overcome the finiteness and environmental problems of fossil fuels. It is actively developing and applying a method using water electrolysis.

In other words, as a method of obtaining hydrogen by electrolyzing water, an alkaline water electrolysis method using an alkaline aqueous solution as an electrolyte is typical, but such a method requires a purification process due to low hydrogen purity, a need for a separation process to separate oxygen and hydrogen, It has many disadvantages such as the need for process management to continuously replenish the electrolyte in the aqueous solution, corrosion of electrodes and components by the aqueous electrolyte, decrease in hydrogen production efficiency due to low current density, and excessive power consumption due to high voltage. have.

On the other hand, due to the characteristics of some industries, including many chemical industries, a significant amount of waste acid or waste base is generated, which is considered a hazardous waste and requires additional treatment before being discharged to the environment. . Therefore, in the treatment of the waste acid or the waste base, additional costs are inevitably incurred, which puts an enormous burden on enterprises.

Accordingly, the inventors of the present invention were conducting research by combining the treatment of the waste acid or the waste base with hydrogen production, supplying the waste acid or the waste base as a source to a novel hydrogen production device, and a cation exchange membrane included in the electrolyte part of the hydrogen production device And it was found that hydrogen and electricity can be generated by exchanging the cations and anions contained in the waste acid or waste base, respectively, through an anion exchange membrane, thereby completing the present invention. In addition, since the hydrogen production device does not require the application of an external voltage and discharges it in the form of water and salt through neutralization of the supplied waste acid or waste base, it can greatly contribute to the environment.

In this regard, Korean Patent Registration No. 10-1263177 discloses an electrolytic cell for an integrated photoelectric-electrolysis hydrogen production system.

The present invention was conceived to solve the above-described problem, and an embodiment of the present invention provides a hydrogen production apparatus for generating hydrogen and electricity by supplying an acid solution and a base solution to an electrolyte portion of a hydrogen production apparatus.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

As a technical means for achieving the above technical problem, one aspect of the present invention,

Anode; Cathode; An electrolyte portion interposed between the anode and the cathode; A hydrogen transfer tube and a conducting wire connecting the anode and the cathode; And an acid solution supply unit, a water supply unit, and a base solution supply unit respectively supplying an acid solution, water, and base solution to the electrolyte unit, wherein the electrolyte unit includes a unit cell including an anion exchange membrane and a cation exchange membrane sequentially disposed. And an acid solution transfer part between the cathode and the anion exchange membrane, a water transfer part between the anion exchange membrane and the cation exchange membrane, and a base solution transfer part between the cation exchange membrane and the anode, and the acid solution supply part and the base solution supply part An acid solution and a base solution are supplied to an acid solution moving part and a base solution moving part in a unit cell, respectively, and the water supply part supplies water to a water moving part in the unit cell.

In the cathode, hydrogen ions react with electrons to generate hydrogen gas through a reduction reaction, and the generated hydrogen gas is transferred to the anode through the hydrogen transfer tube, and the hydrogen gas transferred to the anode reacts with hydroxide ions to be oxidized. Water and electrons are generated through the reaction, and the generated electrons may be transferred to the cathode through the conducting wire.

At least one of the acid solution and the base solution may be a waste acid solution or a waste base solution.

The anode and cathode may have a porous structure.

The interval between adjacent cation exchange membranes and anion exchange membranes in the unit cell may be 100 μm to 300 μm.

Each of the anode and the cathode may have an outer surface in contact with the current collector plate.

The plurality of unit cells may further include a water moving unit between the plurality of unit cells and the unit cells, and may supply water from the water supply unit to a water moving unit between the unit cells.

The hydrogen production device includes a first discharge unit for discharging a solution discharged from the acid solution moving part, the base solution moving part, and the water moving part between the unit cell and the unit cell, and the solution discharged from the water moving part in the unit cell. It may be to further include a second discharge unit to discharge.

Water may be discharged from the first discharge unit, and salt may be discharged from the second discharge unit.

The acid solution may contain hydrochloric acid (HCl), and the base solution may contain sodium hydroxide (NaOH).

The chloride ions of the hydrochloric acid move through the anion exchange membrane to the water moving part in contact with the acid solution moving part, and the sodium ions of the sodium hydroxide move to the water moving part in contact with the base solution moving part through the cation exchange membrane. Sodium chloride (NaCl) may be formed in the water moving part in contact with the acid solution moving part and the base solution moving part.

The hydrogen production device may further include a sodium chloride tank for storing the formed sodium chloride.

In addition, another aspect of the present invention,

It provides a stack, wherein a plurality of the hydrogen production devices are connected in series or in parallel.

According to an embodiment of the present invention, since the hydrogen production device can generate hydrogen and electricity using waste acid and/or waste base, it may be economical because it does not require application of external voltage, and waste acid and/or waste base By neutralizing it and discharging it, it may contribute greatly to the environment.

In addition, electrical energy generated by continuously supplying the waste acid and/or waste base to the hydrogen production device can be stored in energy storage devices such as capacitors, secondary batteries, flow batteries, etc., and then used as a power source for other industries, It is very efficient.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a schematic diagram showing a hydrogen production apparatus including one unit cell according to an embodiment of the present invention.
2 is a schematic diagram showing a hydrogen production apparatus including a plurality of unit cells according to an embodiment of the present invention.
3 is a schematic diagram showing a stack in which a plurality of hydrogen production devices are connected in series according to an embodiment of the present invention.
4 is a schematic diagram showing a stack in which a plurality of hydrogen production devices are connected in parallel according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail. However, the present invention may be implemented in various different forms, and the present invention is not limited by the embodiments described herein, and the present invention is only defined by the claims to be described later.

In addition, terms used in the present invention are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the entire specification of the present invention, "including" a certain component means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

The first aspect of the present application,

Anode 110; Cathode 120; An electrolyte part 200 interposed between the anode 110 and the cathode 120; A hydrogen transfer tube 300 and a conducting wire 400 connecting the anode 110 and the cathode 120; And an acid solution supply unit 500, a water supply unit 550, and a base solution supply unit 600 respectively supplying an acid solution, water, and base solution to the electrolyte unit 200, wherein the electrolyte unit 200 includes A unit cell 220 including an anion exchange membrane 240 and a cation exchange membrane 250 disposed in sequence, and an acid solution moving part 270 between the cathode 120 and the anion exchange membrane 240, and the anion A water transfer unit 280 between the exchange membrane 240 and the cation exchange membrane 250 and a base solution transfer unit 290 between the cation exchange membrane 250 and the anode 110, and the acid solution supply unit 500 And the base solution supply unit 600 supplies an acid solution and a base solution to the acid solution movement unit 270 and the base solution movement unit 290 in the unit cell 220, respectively, and the water supply unit 550 is the unit It provides a hydrogen production apparatus 101 that supplies water to the water moving unit 280 in the cell 220.

Hereinafter, the hydrogen production apparatus 101 according to the first aspect of the present application will be described in detail with reference to FIGS. 1 and 2.

In one embodiment of the present application, the hydrogen production device 101 includes an anode 110, a cathode 120, an electrolyte unit 200, and a conducting wire 400 similar to a general fuel cell. However, the hydrogen production device 101 of the present application additionally provides an acid solution supply unit 500, a water supply unit 550, and a base solution supply unit 600 respectively supplying an acid solution, water, and base solution to the electrolyte unit 200. It may further include, and may further include a hydrogen transfer tube 300 connecting the anode 110 and the cathode 120.

In one embodiment of the present application, the hydrogen production device 101 includes a unit cell 220 including an anion exchange membrane 240 and a cation exchange membrane 250 in which the electrolyte part 200 is sequentially disposed, By supplying an acid solution, water and a base solution to the unit cell 220, hydrogen ions react with electrons in the cathode 120 to generate hydrogen gas through a reduction reaction, and the generated hydrogen gas is transferred to the hydrogen transfer tube ( 300) is transferred to the anode 110, and the hydrogen gas transferred to the anode 110 reacts with hydroxide ions to generate water and electrons through an oxidation reaction, and the generated electrons pass through the conducting wire 400. It may be transmitted to the cathode 120 through. Specifically, since the cathode 120 is in contact with the acid solution moving part 270 of the adjacent unit cell 220, hydrogen ions contained in the acid solution supplied to the acid solution moving part 270 are transferred to the cathode 120 ) Can be delivered. The transferred hydrogen ions may be electrons generated in the anode 110 and hydrogen gas is generated through a reduction reaction as shown in Formula 1 below.

<Formula 1>

_{^{4H + + 4e - → 2H 2}} (g)

In this case, the reduction reaction may have a reduction potential value of 0 V at room temperature.

In addition, the hydrogen gas generated in the cathode 120 may be transferred to the anode 110 through the hydrogen transfer pipe 300. At this time, since the anode 110 is in contact with the base solution moving part 290 of the adjacent unit cell 220, the hydroxide ions contained in the base solution supplied to the base solution moving part 290 are transferred to the anode 110. Can be delivered to. Therefore, it may be that the transferred hydroxide ions and hydrogen gas generate water and electrons through an oxidation reaction as shown in Formula 2 below.

<Formula 2>

_{^{4OH - + 2H 2 → 4e -}} + 4H 2 O

In this case, the oxidation reaction may have a reduction potential value of 0.4 V at room temperature.

The electrons generated in Formula 2 may be transferred to the anode 110 through the conducting wire 400, and thus the reaction of Formula 1 may be performed again.

In one embodiment of the present application, at least one of the acid solution and the base solution may be a waste acid solution or a waste base solution. The waste acid solution or waste base solution may be a conventional waste acid solution or waste base solution that can be released industrially, and since the hydrogen production device 101 is driven through a waste acid solution or a waste base solution, application of an external voltage is not required. It is not necessary, so the economic cost can be greatly reduced. In addition, in industry, it is common for only one of the waste acid solution and the waste base solution to be discharged.In the case of an industry that discharges the waste acid solution, the base solution may be separately purchased and supplied, and in the opposite case, the acid solution is purchased separately. It may be to supply. However, in the case of an industry that discharges both the waste acid solution and the waste base solution, it may be to supply both the discharged waste acid solution and the waste base solution.

In one embodiment of the present application, the anode 110 and the cathode 120 may include an electrode or a metal catalyst that can be used as a catalyst for the anode 110 and the cathode 120, for example, the anode ( 110) and the cathode 120 electrodes are silver (Ag), silver alloy, platinum, iridium, ruthenium, osmium, platinum-ruthenium alloy, platinum-osmium alloy, platinum-palladium alloy or platinum-M alloy (M is Ir, Ga , Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and one or more transition metals selected from the group consisting of Zn) may include one or more catalysts selected from, for example, silver (Ag ), silver alloy, platinum, iridium, ruthenium, osmium, platinum-iridium alloy, platinum-ruthenium alloy, platinum-osmium alloy, platinum-palladium alloy, platinum-cobalt alloy, and platinum-nickel. I can. In addition, as the metal catalyst of the anode 110 and the cathode 120 electrode, as a catalyst supported on a carrier, a catalyst supporting a metal using carbon such as acetylene black, graphite, alumina, silica, zirconia, titania, etc. Can be used. When a noble metal supported on a carrier is used as a catalyst, a commercially available one may be used, or it may be prepared and used by supporting a noble metal on the carrier.

In one embodiment of the present application, the anode 110 and the cathode 120 may have a porous structure. Accordingly, the hydrogen gas generated in the cathode 120 may be desorbed from the cathode 120 and transferred to the hydrogen transfer pipe 300. In addition, the transferred hydrogen gas may be transferred to the anode 110 through the hydrogen transfer pipe 300 to react with hydroxide ions.

In one embodiment of the present application, the size of the cathode 120 and the anode 110 is not limited, and the size of the cation exchange membrane and the anion exchange membrane may be the same as the sizes of the cathode 120 and the anode 110 have.

In one embodiment of the present application, the interval between the cation exchange membrane and the anion exchange membrane adjacent to the unit cell 220 may be 100 μm to 300 μm, preferably 150 μm to 200 μm. If the distance is less than 100 μm, the distance between the cation exchange membrane and the anion exchange membrane may not be smooth because the distance is very narrow and a large pressure loss occurs. Since the distance that the generated ions move to both ion exchange membranes is increased due to the wide area, the size of the resistance to move the ions may increase.

In one embodiment of the present application, the hydrogen production device 101 may include a plurality of unit cells 220, and in this case, water between the plurality of unit cells 220 and the unit cell 220 Each of the moving parts 295 may be further included, and water may be supplied from the water supply part 550 to the water moving parts 295 between the unit cells 220. The more the unit cell 220 is included in the hydrogen production device 101, the greater the difference in the potential value between the anode 110 and the cathode 120 may increase. For example, the unit cell 220 When six are included, the difference in potential value between the anode 110 and the cathode 120 may be 2.4 V.

In the exemplary embodiment of the present disclosure, each of the anode 110 and the cathode 120 may have an outer surface in contact with the current collector plate 800. The material of the current collecting plate 800 is not limited, and hydrogen gas or water generated by contacting the outer surfaces of the anode 110 and the cathode 120 is discharged to the outside of the hydrogen production device 101. It may be to prevent it. Accordingly, the size of the current collector plate 800 may be the same as that of the anode 110 and the cathode 120.

In one embodiment of the present application, the hydrogen production device 101 includes the acid solution moving part 270, the base solution moving part 290, and the water moving part between the unit cell 220 and the unit cell 220 ( 295) may further include a first discharge unit 650 for discharging the solution discharged from the unit cell 220, and a second discharge unit 700 for discharging the solution discharged from the water moving unit 280 in the unit cell 220. have.

In one embodiment of the present application, water may be discharged from the first discharge unit 650 and salt may be discharged from the second discharge unit 700. Specifically, the acid solution supplied to the acid solution transfer unit 270 may be that hydrogen cations are moved through the cation exchange membrane, and anions are also transferred through the anion exchange membrane so that only water is discharged when discharged.For the same reason, the base solution transfer unit The base solution supplied to 600 may be that cations are moved through a cation exchange membrane, and hydroxide ions are moved through an anion exchange membrane, so that only water is discharged when discharged. In addition, water is supplied to the water transfer unit 295 between unit cells through the water supply unit 550, and hydroxide ions are transferred through the anion exchange membrane from the base solution moving unit 290 in contact with the anion exchange membrane on one side. In addition, hydrogen ions are transferred through the cation exchange membrane from the acid solution moving part 270 in contact with the cation exchange membrane on the other side to generate water, and only water may be discharged when discharged. Therefore, the solution discharged from the acid solution moving part 270, the base solution moving part 290, and the water moving part 295 between unit cells may be water, which is the same place through the first discharge part 650. It may be discharged. On the other hand, water is supplied to the water moving part 280 in the unit cell through the water supply part 550, but anions are transferred from the acid solution moving part 270 in contact with the anion exchange membrane on one side, and the other side Since the cation is transferred from the base solution moving part 290 in contact with the cation exchange membrane and the anion and the cation form a salt, the discharged solution may be a salt, and the salt is at the same place through the second discharge unit 700 It may be discharged.

In one embodiment of the present application, in each of the acid solution supply unit 500, the water supply unit 550, and the base solution supply unit 600, the acid solution movement unit 270, the water movement unit (280, 295) and the base solution A pump and a valve may be installed in the pipe connected to the moving part 290. By installing the pump and the valve, the flow rate or flow rate of the supplied acid solution, water, and base solution may be appropriately adjusted so that the hydrogen production device 101 can be smoothly operated.

In one embodiment of the invention, the acid solution is a cation H ⁺ and ^{F -, Cl -, Br -} , I -, SO 4 2-, NO 3 -, ClO 4 - could be to include any of the anion of have. In addition, the base solution is ^{Li +, Na +, K +} , Mg 2+, Ca 2+, Ba ²⁺ of any of positive ions and OH ^- can be to include an anion of.

In one embodiment of the present application, preferably, the acid solution may include hydrochloric acid (HCl), and the base solution may include sodium hydroxide (NaOH). In this case, the chloride ions of the hydrochloric acid move through the anion exchange membrane to the water transfer section 280 in contact with the acid solution transfer section 270, and the sodium ions of the sodium hydroxide pass through the cation exchange membrane. Sodium chloride (NaCl) in the water moving part 280 in contact with the acid solution moving part 270 and the base solution moving part 290 by moving to the water moving part 280 in contact with the moving part 290 ) May be formed. Meanwhile, the hydrogen production apparatus 101 may further include a sodium chloride tank for storing the formed sodium chloride. That is, the sodium chloride tank may be the second discharge unit. Since the formed sodium chloride is formed of sodium ions and chloride ions transferred through a cation exchange membrane and an anion exchange membrane, it may be a high purity sodium chloride containing almost no impurities.

In one embodiment of the present application, the hydrogen production device 101 may supply hydrogen gas to the anode 110 from the outside at the start of operation. This means that when hydrogen gas is supplied to the anode 110 at the start of operation, the hydroxide ions transferred from the base solution moving unit 290 in contact with the anode 110 react to generate electrons, and the electrons are transferred to the cathode 120. This may be because the hydrogen production device 101 can be operated only. However, when the operation of the hydrogen production device 101 starts, hydrogen gas is generated in the cathode 120 and the generated hydrogen gas can be transferred to the anode 110 through the hydrogen transfer pipe 300. The hydrogen gas supplied from may stop the supply.

In one embodiment of the present application, the hydrogen production device 101 collects electrical energy generated during operation by connecting an energy storage device (not shown) such as a capacitor, a capacitor, a secondary battery, or a flow battery to the conducting wire 400 It can be. Therefore, the collected electric energy may be used as a power source for other industries. That is, the hydrogen production device 101 supplies an acid solution and a base solution so that electrons generated from the anode 110 are transferred to the cathode 120 through the conductor 400, and at this time, the conductor 400 It may be to recycle the electrical energy generated by connecting a capacitor or a capacitor to.

The second aspect of the present application,

A plurality of hydrogen production apparatuses 101 of the first side are connected in series or in parallel to provide a stack.

Detailed descriptions of portions overlapping with the first aspect of the present application have been omitted, but the description of the first aspect of the present application may be equally applied even if the description is omitted in the second aspect.

Hereinafter, the stack according to the second aspect of the present application will be described in detail with reference to FIGS. 3 and 4. 3 is a schematic diagram showing a stack in which the hydrogen production apparatus 101 is connected in series, and FIG. 4 is a schematic diagram showing a stack in which the hydrogen production apparatus 101 is connected in parallel.

In one embodiment of the present application, according to FIG. 3, the hydrogen production device 101 may be connected in series to form a stack. At this time, the connection between the hydrogen production device 101 may be connected by a conducting wire 400, in this case, in the hydrogen production device 101 according to the first aspect of the present application, the anode 110 and the cathode 120 The conducting wire 400 connecting the is not a structure connected within a single hydrogen production device 101 but may be connected between neighboring hydrogen production devices 101. That is, all the configurations including the hydrogen transfer pipe 300 in FIGS. 1 and 2 showing a schematic diagram of the hydrogen production device 101 of the first aspect of the present application are the same as the configuration of each of the hydrogen production devices 101 shown in FIG. 3, Only the conductive wire 400 is connected to the adjacent hydrogen production device 101, and the hydrogen production devices 101 at both ends of the stack connected in series may also be connected by the conductive wire 400.

In one embodiment of the present application, when the hydrogen production device 101 is connected in series to form a stack, hydrogen ions react with electrons at the cathode 120 to generate hydrogen gas through a reduction reaction, and the generation The generated hydrogen gas is transferred to the anode 110 through the hydrogen transfer tube 300, and the hydrogen gas transferred to the anode 110 reacts with hydroxide ions to generate water and electrons through an oxidation reaction, and the generated electrons May be transmitted to the cathode 120 of the neighboring hydrogen production device 101 through the conducting wire 400. Each hydrogen production device 101 connected in series may operate according to the same principle as described above, and at this time, electrons generated from the anode of the hydrogen production device 101 located at one end are the hydrogen production device 101 located at the other end. It may be transferred to the cathode of the stack to operate as a whole.

In one embodiment of the present application, when the hydrogen production device 101 is connected in series to form a stack, the electric energy generated from each hydrogen production device 101 is collected and used as a power source for other industries. In particular, the current of the entire stack is constant, but since the voltage increases, power may be increased. For example, in the case of a stack in which 10 hydrogen production devices 101 are connected in series, assuming that a potential difference of 0.4 V occurs in each hydrogen production device 101, a potential difference of 4 V may occur in the entire stack. There may be.

In one embodiment of the present application, according to FIG. 4, the hydrogen production apparatus 101 may be connected in parallel to form a stack. At this time, the connection between the hydrogen production device 101 may be connected by a conducting wire 400, in this case, in the hydrogen production device 101 according to the first aspect of the present application, the anode 110 and the cathode 120 The conductive wire 400 connecting the hydrogen may be connected between all the hydrogen production devices 101 rather than a structure connected within a single hydrogen production device 101.

In one embodiment of the present application, when the hydrogen production device 101 is connected in parallel to form a stack, hydrogen ions react with electrons at the cathode 120 to generate hydrogen gas through a reduction reaction, and the generation The generated hydrogen gas is transferred to the anode 110 through the hydrogen transfer tube 300, and the hydrogen gas transferred to the anode 110 reacts with hydroxide ions to generate water and electrons through an oxidation reaction, and the generated electrons May be delivered to the cathode 120 of all the hydrogen production device 101 through the wire 400. Each of the hydrogen production devices 101 connected in parallel may operate on the same principle as described above.

In one embodiment of the present application, when the hydrogen production devices 101 are connected in parallel to form a stack, electric energy generated from each hydrogen production device 101 is collected and used as a power source for other industries. In particular, the voltage across the stack is constant, but power may be increased because the current increases.

101: hydrogen production device
110: anode
120: cathode
200: electrolyte part
220: unit cell
240: anion exchange membrane
250: cation exchange membrane
270: acid solution moving part
280: water moving part in the unit cell
290: base solution moving part
295: water moving part between unit cells
300: hydrogen transfer pipe
400: lead
500: acid solution supply
550: water supply
600: base solution supply unit
650: first discharge unit
700: second discharge unit
800: collector plate

Claims (13)

Anode;
Cathode;
An electrolyte part interposed between the anode and the cathode;
A hydrogen transfer tube and a conducting wire connecting the anode and the cathode; And
An acid solution supply unit, a water supply unit, and a base solution supply unit respectively supplying an acid solution, water and a base solution to the electrolyte unit;
Including,
The electrolyte unit includes a unit cell including an anion exchange membrane and a cation exchange membrane sequentially disposed,
An acid solution moving part between the cathode and the anion exchange membrane, a water moving part between the anion exchange membrane and the cation exchange membrane, and a base solution moving part between the cation exchange membrane and the anode,
The acid solution supply unit and the base solution supply unit supply an acid solution and a base solution to an acid solution moving unit and a base solution moving unit in the unit cell, respectively, and the water supply unit supplying water to a water moving unit in the unit cell Phosphorus hydrogen production device.
The method of claim 1,
In the cathode, hydrogen ions react with electrons to generate hydrogen gas through a reduction reaction,
The generated hydrogen gas is transferred to the anode through the hydrogen transfer tube,
Hydrogen gas transferred to the anode reacts with hydroxide ions to generate water and electrons through oxidation,
The generated electrons are transferred to the cathode through the conducting wire.
The method of claim 1,
At least one of the acid solution and the base solution is a waste acid solution or a waste base solution.
The method of claim 1,
The anode and cathode will have a porous structure, hydrogen production device.
◈ Claim 5 was abandoned upon payment of the set registration fee. The method of claim 1,
The spacing between the adjacent cation exchange membrane and the anion exchange membrane in the unit cell is 100 μm to 300 μm.
The method of claim 1,
The anode and the cathode, respectively, the outer surface is in contact with the current collector plate, hydrogen production apparatus.
The method of claim 1,
The unit cell is plural,
Each further comprises a water moving part between the plurality of unit cells and the unit cell,
The hydrogen production apparatus to supply water to the water moving part between the unit cells in the water supply part.
The method of claim 1,
The hydrogen production device includes a first discharge unit for discharging a solution discharged from the acid solution moving part, the base solution moving part, and the water moving part between the unit cell and the unit cell, and the solution discharged from the water moving part in the unit cell. The hydrogen production apparatus further comprising a second discharge unit to discharge.
The method of claim 8,
Water is discharged from the first discharge unit, and the salt is discharged from the second discharge unit, hydrogen production apparatus.
The method of claim 1,
The acid solution contains hydrochloric acid (HCl), and the base solution contains sodium hydroxide (NaOH).
◈ Claim 11 was abandoned upon payment of the set registration fee. The method of claim 10,
The chloride ions of the hydrochloric acid move through the anion exchange membrane to the water moving part in contact with the acid solution moving part, and the sodium ions of the sodium hydroxide move to the water moving part in contact with the base solution moving part through the cation exchange membrane. Sodium chloride (NaCl) is formed in the water moving part in contact with the acid solution moving part and the base solution moving part, hydrogen production device.
◈ Claim 12 was abandoned upon payment of the set registration fee. The method of claim 11,
The hydrogen production device further comprises a sodium chloride tank for storing the formed sodium chloride.
A stack of a plurality of the hydrogen production devices of claim 1 are connected in series or in parallel.

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