KR102266282B1 - Alkali electrolyzer stack - Google Patents

Abstract

The present invention relates to an alkaline water electrolyzer stack, and more specifically, the present invention minimizes electrical resistance by moving charges only through the separator 30 through the electrolyte in a form in which the electrode and the membrane are in contact, and KOH solution is applied to a hydrogen cell and an oxygen cell It is possible to provide an alkaline water electrolyzer stack with increased efficiency because oxygen purity can be increased by separately supplying it to the ionizer.
The alkaline water electrolyzer stack according to the present invention includes a separation membrane 30 provided in a circular shape and configured to move ions while physically separating two electrodes; electrode parts 40 provided in pairs at both ends of the separator 30 in a shape corresponding to the separator 30 and provided in contact with the separator 30; a half-electrode part 50 provided in pairs at both ends of the electrode part 40 in a shape corresponding to the electrode part 40, for transmitting electricity to the electrode and smoothly discharging the generated gas; an electrode plate part 60 provided in pairs at both ends of the half electrode part 50 in a shape corresponding to the half electrode part 50 and generating hydrogen and oxygen while electrolysis of water occurs; A pair is installed on the outer surface of a pair of the electrode plate part 60, respectively, and an electrolyte inlet 80 and a gas outlet 90 are provided on one side of the pair (-) external electrode 11 and the (-) an external electrode 10 comprising a (+) external electrode 12 provided in a shape corresponding to the external electrode 11; Provided in pairs between the half-electrode part 50 and the electrode plate part 60 provided as a pair, one provided on the side closer to the (-) external electrode 11 of the pair generates hydrogen gas a hydrogen room cell frame 21 forming a frame of the cell; Among the pairs provided in pairs between the half electrode part 50 and the electrode plate part 60 , the other one provided on the side close to the (+) external electrode 12 is oxygen forming a frame of a cell in which oxygen gas is generated. room cell frame 22; It is provided between the pair of external electrodes 10 and is packed so that the electrolyte flowing in from the electrolyte inlet 80 and oxygen and hydrogen gas flowing out to the gas outlet 90 do not leak when moving, and the half-electrode part 50 ) and a gasket part 70 provided in a shape corresponding to that, but the electrode part 40 and the separator 30 are in contact so that only the separator 30 is configured to move ions through the electrolyte .

Description

Alkaline Water Electrolyzer Stack {ALKALI ELECTROLYZER STACK}

The present invention relates to an alkaline water electrolyzer stack, and more specifically, the present invention minimizes electrical resistance by moving charges only through the separator 30 through the electrolyte in a form in which the electrode and the membrane are in contact, and KOH solution is applied to a hydrogen cell and an oxygen cell It is possible to provide an alkaline water electrolyzer stack with increased efficiency because oxygen purity can be increased by separately supplying it to the ionizer.

In general, the main components of the electrolyzer are an external electrode 10 (-), an external electrode 10 (+), a hydrogen room cell frame 20, an oxygen room cell frame 20, a separator 30, and a plurality of electrodes. It consists of a laminated structure. In addition, only the electrolyte is filled between the electrode and the separator 30 .

The electric resistance of the electrolyte is high because the movement of electric charge only moves through the electrolyte. In addition, resistance was generated even by gas bubbles generated during the movement of electric charges, which caused a problem in that the hydrogen and oxygen generation efficiency of the water electrolyzer was lowered.

In addition, there is a problem in that the purity of hydrogen and oxygen is lowered because an inlet of the electrolyte flowing into the generated hydrogen room and the oxygen room is provided at one location.

Korean Patent No. 10-1143963

The present invention has been devised to solve the above problems, and an object of the present invention is to provide an alkaline water electrolyzer stack capable of increasing the efficiency of electrolysis by reducing electrical resistance to a minimum.

It is also an object of the present invention to provide an alkaline water electrolyzer stack that does not receive resistance from bubbles when electric charges are transferred.

Another object of the present invention is to provide an alkaline water electrolyzer stack in which a bipolar plate, a semi-electrode, and an electrode are integrated to have a uniform contact and allow electricity to flow uniformly throughout.

The technical problems to be solved by the invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

The alkaline water electrolyzer stack according to the present invention comprises:

a separation membrane 30 provided in a circular shape to physically separate the two electrodes and to allow ions to move;

electrode parts 40 provided in pairs at both ends of the separator 30 in a shape corresponding to the separator 30 and provided in contact with the separator 30;

a half-electrode part 50 provided in pairs at both ends of the electrode part 40 in a shape corresponding to the electrode part 40, and for transmitting electricity to the electrode and smoothly discharging the generated gas;

an electrode plate part 60 provided in pairs at both ends of the half electrode part 50 in a shape corresponding to the half electrode part 50 and generating hydrogen and oxygen while electrolysis of water occurs;

A pair is installed on the outer surface of a pair of the electrode plate part 60, respectively, and an electrolyte inlet 80 and a gas outlet 90 are provided on one side of the pair (-) external electrode 11 and the (-) an external electrode 10 composed of a (+) external electrode 12 provided in a shape corresponding to the external electrode 11;

Provided in pairs between the half-electrode part 50 and the electrode plate part 60 provided as a pair, one provided on the side closer to the (-) external electrode 11 of the pair generates hydrogen gas a hydrogen room cell frame 21 forming a frame of the cell;

Among the pairs provided in pairs between the half electrode part 50 and the electrode plate part 60 , the other one provided on the side close to the (+) external electrode 12 is oxygen forming a frame of a cell in which oxygen gas is generated. room cell frame 22;

It is provided between the pair of external electrodes 10 and is packed so that the electrolyte flowing in from the electrolyte inlet 80 and oxygen and hydrogen gas flowing out to the gas outlet 90 do not leak when moving, and the half-electrode part 50 ) and the gasket portion 70 provided in a shape corresponding to;

It is characterized in that the electrode part 40 and the separator 30 are in contact so that ions move through the electrolyte only in the separator 30 .

By means of solving the above problems, the present invention can increase the efficiency of electrolysis by reducing the electrical resistance to be minimized.

In addition, in the present invention, since the electrode and the separator 30 are attached to the structure, alkali ions do not pass through the gas layer and move to the (+) electrode through the membrane, so that they do not receive resistance from bubbles, so that the purity of hydrogen and oxygen can be increased. .

In addition, the present invention can provide an alkaline water electrolyzer stack in which a bipolar plate, a semi-electrode, and an electrode are integrated to have a uniform contact and allow electricity to flow uniformly over the entire area.

1 is a view showing the structure of a conventional alkaline water electrolyzer stack.
2 is a view showing the structure of an alkaline water electrolyzer stack according to an embodiment of the present invention.
3 is a view showing a form in which the half-electrode part 50, the electrode part 40, and the electrode plate part 60 are integrated through bolt fitting according to an embodiment of the present invention.
4 is a view showing a form in which the half electrode part 50, the electrode part 40, and the electrode plate part 60 are integrated through welding and fixing according to an embodiment of the present invention.
5 is a view showing a detailed assembly view of an alkaline water electrolyzer stack according to an embodiment of the present invention. A gasket part 70, a cell frame 20, an electrode plate part 60, and a half between the external electrodes 10 are shown. It is a view showing a cross section when the electrode part 50, the electrode part 40, and the separator 30 are sequentially assembled in an easy-to-understand manner.
6A is a cross-sectional view of a conventional electrolyzer, and (B) is a cross-sectional view of an alkaline water electrolyzer stack according to the present invention.

Terms used in this specification will be briefly described, and the present invention will be described in detail.

The terms used in the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, but these may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the entire specification, when a part “includes” a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the embodiments of the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Specific details including the problem to be solved for the present invention, the means for solving the problem, and the effect of the invention are included in the embodiments and drawings to be described below. Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view of a conventional alkaline water electrolyzer stack.

As shown in FIG. 1, the conventional water electrolyzer is provided with a first cell frame 20, a separator 30, a second cell frame 20, and an electrode including an external electrode 10, and has a structure in which multiple cells are stacked. is composed of Between the electrode and the separator 30, only an electrolyte is filled. Since the movement of ions only moves through the electrolyte, the electrical resistance of the electrolyte is very large. In addition, there is a problem in that resistance is generated even by gas bubbles generated during the movement of ions. This is because the inlet of the electrolyte solution flowing into the hydrogen and oxygen cells was provided as a single inlet.

In order to solve this problem, the present invention, as shown in FIG. 2 , a separator 30, an electrode part 40, a half electrode part 50, an electrode plate part 60, an external electrode 10, a cell frame ( 20), the gasket portion 70, the electrolyte inlet 80, and the gas outlet 90 may be provided in a structure in which a plurality of these structures are stacked.

First, the separator 30 is provided in a single number at the center of the alkaline water electrolyzer stack according to the present invention, and is configured to move ions while physically separating the two electrodes of the electrode unit 40 . More specifically, the separator 30 is formed in a circular plate shape and prevents mixing of hydrogen and oxygen generated at the (+) and (-) poles, as well as the electrolyte generated by decomposition at the (-) pole. OH ⁻ moves in the (+) pole direction of the electrode part 40 so that oxygen and water are generated at the (+) pole.

Next, the electrode parts 40 are provided in pairs in a shape corresponding to the separator 30 at both ends of the separator 30 , and are provided in contact with the separator 30 .

As shown in FIG. 2 , the electrode part 40 is provided as a circular plate having a shape corresponding to that of the separator 30 . The electrode part 40 is composed of a first electrode 41 and a second electrode 42, each of which has (+)/(-) poles on both sides, and a pair is disposed on both sides of the separator 30 , respectively. However, it is preferable that a second gasket 72 is provided between the second electrode 42 and the separator 30 .

When a current is applied to the electrode part 40, the electrolyte is electrolyzed to generate oxygen at the (+) electrode and hydrogen is generated at the (-) electrode.

Preferably, the electrode part 40 is formed of a porous plate or mesh plated with Ni or Ni to increase the electrolytically active area .

Since the electrode part 40 is provided in a structure in which it is in contact with the separator 30 and is attached to it, OH ^- ions generated by decomposition of the electrolyte at the (-) electrode do not pass through the gas layer but pass through the membrane to the (+) electrode. will move Ions are moved through the electrolyte only in the separator 30 . In the conventional electrolyzer, the electrode plate acts as an electrode, and hydrogen and oxygen gas are generated in the corresponding part, and the OH- high ion temperature is generated near the electrode plate and moves through the KOH electrolyte. However, in the electrolytic cell of the present invention, since the electrode is in contact with the separator, most OH- ions of the separation membrane 30 directly pass through the separation membrane 30 at the site.

More specifically, Figure 6 (A) is a conventional electrolytic cell, Figure 6 (B) is an electrolytic cell of the present invention. In the conventional case, since the electrode and the membrane are separated, it can be confirmed that electrons and ions move through the gas layer through the KOH electrolyte solution. In comparison, as shown in FIG. 6(B), the electrolytic cell of the present invention has a structure in which the electrode part 40 and the separator 30 are attached, and the OH ^- ions do not pass through the gas layer and the separator 30 is It passes through and moves to the (+) pole. In FIG. 6(B), the separator electrode is shown as a catalyst-coated part on the electrolyte part, that is, the electrode part 40, and the zigzag shape is a mesh part that is not coated with the electrolyte part. In addition, the ZERO-GAP electrode has the same meaning as the electrode part 40 described herein.

Next, the half-electrode part 50 is provided in pairs in a shape corresponding to the electrode part 40 at both ends of the electrode part 40, and transmits electricity to the electrode and smoothly discharges the generated gas. plays a role

More specifically, as shown in FIG. 2 , the half electrode part 50 is provided with a first half electrode 51 and a second half electrode 52 , and the first half electrode 51 is connected to the first electrode ( 41), it is preferable that the second half electrode 52 is provided at the end of the second electrode 42, respectively. The half-electrode part 50 is configured to have the same size and shape as the electrode part 40 and is preferably provided to facilitate fixing as shown in FIGS. 3 and 4 .

The electrode plate part 60 is provided in pairs in a shape corresponding to the half-electrode part 50 at both ends of the half-electrode part 50, and serves to generate hydrogen and oxygen while the electrolysis reaction of water occurs. .

More specifically, as shown in FIG. 2 , the electrode plate part 60 is provided with a first electrode plate 61 and a second electrode plate 62 , and the first electrode plate 61 is the first half electrode ( 51), and the second electrode plate 62 is preferably provided at the end of the second half electrode 52, respectively. The electrode plate part 60 may be configured in the same size and shape as the half-electrode part 50 , and as shown in FIGS. 3 and 4 , is partially larger than the half-electrode part 50 so that it is easier to fix. may be arranged to do so.

The half electrode part 50 , the electrode part 40 , and the electrode plate part 60 are provided integrally. Integration can be carried out through bolting fixing, welding fixing, and riveting fixing. As shown in FIG. 3 , in the case of integration through bolt fitting or riveting, an insertion hole is provided to insert a bolt or rivet in the half electrode part 50 , and the inserted bolt or rivet is provided in the electrode plate part 60 . A fixture to which the rivets are secured is provided. It is preferable that the insertion hole and the fixture are provided in plurality at the upper end and the lower end.

In addition, as shown in FIG. 4 , in the case of integration through the welding fixing, the electrode part 40 and the electrode plate part 60 sequentially connected to the half electrode part 50 by welding at the half electrode part 50 . ) to welding. The welding tool may be provided in the half electrode part 50 , the electrode part 40 and the electrode plate part 60 so that the welding fixing is easily performed, and it is preferable that a plurality of welding tools are provided at the upper end and the lower end.

Through the integration process, a uniform contact surface is obtained, and electricity uniformly flows over the entire surface.

Next, a pair of the external electrodes 10 are respectively installed on the outer surfaces of the pair of the electrode plate parts 60, and an electrolyte inlet 80 and a gas outlet 90 are provided on one side of the pair (-) It consists of an external electrode 11 and a (+) external electrode 12 provided in a shape corresponding to the (-) external electrode 11 .

The external electrode 10 may be pressurized to maintain the airtightness of the alkaline water electrolyzer stack according to the present invention, and it is preferable to have a structure in which a fastening bolt can be assembled. More specifically, the fastening bolt maintains the pressurized to maintain the airtightness of the stack, and is provided to further pressurize the airtightness by confirming the airtightness that may be loosened according to the expiration date.

At the same time, it is preferable that the front part of the external electrode 10 is provided in a busbar assembly structure so as to integrate the wire fastening part to which the wire is fastened in order to evenly flow electricity. Electricity can be uniformly and stably supplied to the external electrode 10 through the busbar-shaped assembly structure. More specifically, the bus bar assembly structure is a method of assembling a bolt serving as a conductor to the external electrode 10 and fixing a conductor plate to the bolt to directly contact the current through the external electrode 10 to the first electrode It is characterized in that the current flows evenly in the plate (61).

Next, the cell frame 20 includes a hydrogen room cell frame 21 and an oxygen room cell frame 22 .

The hydrogen room cell frame 21 is provided in pairs between the half-electrode part 50 and the electrode plate part 60 provided as a pair, on the side closer to the (-) external electrode 11 of the pair. The provided one forms the frame of the cell in which hydrogen gas is generated.

The oxygen room cell frame 22 generates oxygen gas from one of the pairs provided in pairs between the half-electrode part 50 and the electrode plate part 60, the other one provided on the side closer to the (+) external electrode 12 . to form a cell frame.

Next, a plurality of gasket parts 70 are provided between the pair of external electrodes 10 so that the electrolyte flowing in from the electrolyte inlet 80 and oxygen and hydrogen gas flowing out to the gas outlet 90 do not leak when moving. It is packed and provided in a shape corresponding to the half-electrode part 50 .

More specifically, as shown in FIG. 2 , the gasket part 70 is preferably composed of a first gasket 71 , a second gasket 72 , and a third gasket 73 . The first gasket 71 is provided between the (−) external electrode 11 and the first electrode plate 61 , and the second gasket 72 is formed between the separator 30 and the second electrode ( 42 , and the third gasket 73 may be provided between the second electrode plate 62 and the (+) external electrode 12 .

The gasket part 70 is preferably provided in the same size and the same shape as the cell frame 20 and packed so that the electrolyte and oxygen and hydrogen gas do not leak.

Next, the electrolyte injection port 80 is provided on one side of the (-) external electrode 11 is configured so that the electrolyte can be injected. The electrolyte inlet 80 is provided with a hydrogen room inlet 81 through which an electrolyte is introduced into the hydrogen cell and an oxygen room inlet 82 through which an electrolyte is introduced into the oxygen cell.

More specifically, in the hydrogen room inlet 81, the electrolyte moves through the inlet pipe and is introduced by a continuous injection method. In addition, in the oxygen room inlet 82, the electrolyte moves through the inlet pipe and is introduced by a continuous injection method.

A plurality of holes are provided on one side of the gasket portion 70 and the cell frame 20 . When the gasket part 70 and the cell frame 20 are coupled, the hole is also provided to be coupled, and the electrolyte moves through the hole. The electrolyte is introduced through a lower end port (not shown) provided at the lower end of the gasket unit 70 and the cell frame 20 , and the electrolyte is delivered to the electrode unit 40 . When the electrolyte is delivered to the electrode part 40 , hydrogen and oxygen are generated, and the remaining electrolyte is discharged together with hydrogen gas and oxygen gas through the gas outlet 90 .

The electrolyte injection port 80 is preferably provided at the lower end of the (-) external electrode (11). In the conventional case, there is a single electrolyte inlet 80 and an electrolyte outlet P through which the electrolyte is discharged, so that the electrolyte is circulated, respectively , but the electrolyte inlet 80 according to the present invention is the electrolyte in which the electrolyte is injected. It is characterized in that the hydrogen room inlet 81 and the oxygen room inlet 82 are separately provided at the bottom.

Next, the gas outlet 90 is provided on one side of the (-) external electrode 11 and is configured to discharge the generated oxygen and hydrogen gases. In the conventional case, a single electrolyte outlet (P) was provided, and a small amount of electrolyte was also discharged from the gas outlet (90), but the gas outlet (90) according to the present invention is the hydrogen outlet (91) and the oxygen outlet (92) Separately, the hydrogen gas and electrolyte are discharged from the hydrogen outlet 91 and oxygen gas and the electrolyte are discharged from the oxygen outlet 92 .

As shown in FIG. 2, the gas outlet 90 is preferably provided at the upper end of the (-) external electrode 11, and the electrolyte together with the oxygen and hydrogen gas is provided at the gas outlet 90. can be discharged.

Below, as shown in FIG. 5 , a detailed assembly diagram of the alkaline water electrolyzer stack according to the present invention will be described. More specifically, it is preferable that a bolt serving as a conductor is assembled to the external electrode 10 and assembled by fixing a conductor plate to the bolt to directly contact an electric current. 5 shows that the gasket part 70, the cell frame 20, the electrode plate part 60, the half electrode part 50, the electrode part 40 and the separator 30 are sequentially assembled between the external electrodes 10. It is a drawing that expresses the cross-section when it is made in an easy-to-understand manner. In fact, the gasket portion 70 to the separator 30 are repeatedly arranged between the external electrodes 10 .

7) of FIG. 5 is a structure for evenly supplying electricity to the electrolyzer over the entire surface, and several wires are connected to the busbar as one, and are coupled to the external electrode surface of the electrolyzer in a manner capable of supplying electricity to multiple points at once.

Below, the current density was measured using the conventional water electrolyzer and the water electrolyzer of the present invention. The current density was measured by measuring the amount of current injected into the water electrolyzer with a tester (clamp meter) in the electric input wire, and dividing the current by the cell cross-sectional area.

While the current density was 0.25 A/cm 2 or less in the conventional electrolytic cell, it was confirmed that the current density was 0.4 to 0.6 A/cm 2 in the electrolytic cell of the present invention.

Next, the electrolysis efficiency was confirmed using the conventional water electrolyzer and the water electrolyzer of the present invention. The electrolysis efficiency was measured by measuring the amount of hydrogen generated in a system operating at 50 to 80° C. and converting it into energy used in the stack at that time.

When the electrolysis efficiency was checked, it was confirmed that the conventional electrolytic cell was 50 to 60%, but the electrolytic cell of the present invention was 65 to 80%. The efficiency measurement method is that the power consumed to produce 1Nm3 of hydrogen is 3.54kW, and the existing electrolyzer is at the level of 6~7kW to produce 1Nm3 of hydrogen, but the electrolytic cell of the present invention consumes only 4.4~5.5kW of the input electricity. Efficiency is excellent.

Therefore, in the case of the electrolytic cell manufactured according to an embodiment of the present invention, the number of the electrode part 40 , the separator 30 , the gasket, etc. can be reduced, so that the size of the electrolytic cell can be made compact.

By means of solving the above problems, the present invention can increase the efficiency of electrolysis by reducing the electrical resistance to be minimized.

In addition, in the present invention, since the electrode and the separator 30 are attached to the structure, alkali ions do not pass through the gas layer and move to the (+) electrode through the membrane, so that they do not receive resistance from bubbles, so that the purity of hydrogen and oxygen can be increased. .

In addition, the present invention can provide an alkaline water electrolyzer stack in which a bipolar plate, a semi-electrode, and an electrode are integrated to have a uniform contact and allow electricity to flow uniformly over the entire area.

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and the meaning and scope of the claims and their All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

10. External electrode
11. (-) external electrode
12. (+) external electrode
20. Cell Frame
21. Hydrogen Room Cell Frame
22. Oxygen Room Cell Frame
30. Separator
40. Electrode
41. First electrode
42. Second electrode
50. Half Electrode
51. First Half Electrode
52. Second half electrode
60. Electrode plate part
61. First electrode plate
62. Second electrode plate
70. Gasket part
71. First gasket
72. Second gasket
73. Third gasket
80. Electrolyte inlet
81. Hydrogen room inlet
82. Oxygen room inlet
90. Gas outlet
91. Hydrogen outlet
92. Oxygen outlet

Claims (5)

a separation membrane 30 provided in a circular shape so that ions move while physically separating the two electrodes;
An electrode part 40 made of a porous plate or mesh plated with Ni or Ni, which is in contact with the separator 30 and is formed as a pair of a shape corresponding to the separator 30 at both ends of the separator 30;
a half-electrode part 50 provided in pairs at both ends of the electrode part 40 in a shape corresponding to the electrode part 40, and for transmitting electricity to the electrode and smoothly discharging the generated gas;
an electrode plate part 60 provided in pairs at both ends of the half electrode part 50 in a shape corresponding to the half electrode part 50 and serving to generate hydrogen and oxygen while the electrolysis reaction of water occurs;
A pair is installed on the outer surface of a pair of the electrode plate part 60, respectively, and an electrolyte inlet 80 and a gas outlet 90 are provided on one side of the pair (-) external electrode 11 and the (-) an external electrode 10 composed of a (+) external electrode 12 provided in a shape corresponding to the external electrode 11;
Provided in pairs between the half-electrode part 50 and the electrode plate part 60 provided as a pair, one provided on the side closer to the (-) external electrode 11 of the pair generates hydrogen gas a hydrogen room cell frame 21 forming a frame of the cell;
Among the pairs provided in pairs between the half electrode part 50 and the electrode plate part 60 , the other one provided on the side close to the (+) external electrode 12 is oxygen forming a frame of a cell in which oxygen gas is generated. room cell frame 22;
It is provided between the pair of external electrodes 10 and is packed so that the electrolyte flowing in from the electrolyte inlet 80 and oxygen and hydrogen gas flowing out to the gas outlet 90 do not leak when moving, and the half-electrode part 50 ) and the gasket portion 70 provided in a shape corresponding to;
The electrode part 40 and the separator 30 are in contact so that only the separator 30 is configured to move ions through the electrolyte,
The electrolyte inlet 80,
Provided on one side of the (-) external electrode 11,
a hydrogen room inlet 81 through which electrolyte is introduced into the hydrogen cell; and
an oxygen room inlet 82 through which the electrolyte is introduced into the oxygen cell; and the electrolyte is introduced separately,
The gas outlet 90 is,
Provided on one side of the (-) external electrode 11,
a hydrogen outlet 91 through which hydrogen is discharged; and
Oxygen outlet 92 through which oxygen is discharged; Consisting of, the oxygen and hydrogen are discharged separately,
The electrode part 40 is in contact with the separator 30 and is provided with a first electrode 41 having a (+) pole and a second electrode 42 having a (-) pole at both ends of the separator 30, and the second electrode ( ^{42), OH -} ions generated by decomposition of the electrolyte pass through the separator 30 and move to the first electrode 41,
The half-electrode part 50,
It is composed of a first half electrode 51 and a second half electrode 52, the first half electrode 51 is provided at the end of the first electrode 41, and the second half electrode 52 is the second half electrode 52. 2 are provided at the ends of the electrodes 42, respectively,
The electrode plate part 60,
A first electrode plate 61 and a second electrode plate 62 are provided, and the first electrode plate 61 is provided at the end of the first half electrode 51 , and the second electrode plate 62 is the second electrode plate 62 . are provided at the ends of the two half electrodes 52, respectively,
The electrode part 60 is partially larger than the half electrode part 50 so that the electrode part 40, the half electrode part 50 and the electrode plate part 60 are easily integrated, so that it is easy to fix and a uniform contact surface. Alkaline water electrolyzer stack, characterized in that it is provided so that electricity uniformly flows over the entire surface.
The method of claim 1,
The alkaline water electrolyzer stack, characterized in that the half electrode part (50), the electrode part (40) and the electrode plate part (60) are provided integrally.
The method of claim 1,
The external electrode 10 is
Alkaline water electrolyzer stack, characterized in that it is provided in a busbar assembly structure to integrate the wire fastening part to which the wires are fastened.
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