WO2024117732A1

WO2024117732A1 - Electrolysis device

Info

Publication number: WO2024117732A1
Application number: PCT/KR2023/019336
Authority: WO
Inventors: 김광환; 노태근; 이종진; 노태민; 박준호
Original assignee: 주식회사 엘지화학
Priority date: 2022-11-28
Filing date: 2023-11-28
Publication date: 2024-06-06
Also published as: KR20240079298A

Abstract

The present invention relates to an electrolysis device. The electrolysis device according to the present invention comprises: multiple separation plates; and membrane-electrode assemblies positioned between the multiple separation plates, each membrane-electrode assembly comprising multiple electrodes and separation membranes positioned between the multiple electrodes. Each of the separation plates comprises: a flow channel part having one surface and the other surface on which a first flow channel and a second flow channel are formed, respectively, fluid moving along the first and second flow channels; a one-side distribution part located at a one-side portion of the flow channel part in a plan view; and an other-side distribution part located at the other-side portion of the flow channel part in the plan view. The one-side distribution part and the other-side distribution part form corrugations to form a distribution channel communicating with the first flow channel and the second flow channel. The corrugations of the one-side distribution part and the other-side distribution part are formed in opposite shapes.

Description

electrolysis device

Cross-citation with related applications

This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0161755, dated November 28, 2022, and all contents disclosed in the document of the Korean Patent Application are included as part of this specification.

Technology field

The present invention relates to electrolysis devices.

Currently, carbon dioxide is a greenhouse gas that causes global warming and must be reduced. Methods for reducing carbon dioxide include capture, chemical conversion, or electrochemical conversion. Among these, the electrochemical conversion method can precisely control the components so that other synthetic gases can be produced, which can provide economic benefits over simply removing carbon dioxide.

Among water electrolysis systems that electrochemically convert carbon dioxide or decompose water to produce hydrogen, especially membrane-electrode assembly (MEA)-based systems can operate under high current density conditions, have high energy efficiency, and can be stacked. and modularity is easy, so active research is underway.

The unit cell of the membrane electrode assembly system has an anode and cathode located around a separator, and a flow path is formed to supply electrical energy and reactants to the anode and cathode electrodes and discharge products. It consists of a separate plate, and the stack is manufactured by stacking unit cells. In the membrane electrode assembly system, if the anode and cathode side separators are manufactured and joined separately, the cost of manufacturing the separator increases and, above all, resistance is generated at the bonding interface, which has the disadvantage of lowering energy efficiency.

One aspect of the present invention is to provide an electrolysis device that can increase energy efficiency while reducing manufacturing costs.

The electrolysis device according to the first embodiment of the present invention includes a plurality of separation plates; and a membrane-electrode assembly positioned between the plurality of separators and including a plurality of electrodes and a separator positioned between the plurality of electrodes, wherein the separator plate has a first surface and a second surface through which fluid moves, respectively. A flow path portion forming a first flow path and a second flow path; One side distribution portion located on one side of the flow path portion in a plan view; and a second distribution part located on the other side of the flow path in a plan view, wherein the one side distribution part and the other distribution part form irregularities to form a distribution passage communicating with the first flow path and the second flow path, The irregularities of one side of the distribution portion and the other side of the distribution portion may be formed in opposite shapes.

According to the present invention, in the electrolysis device for electrolyzing carbon dioxide, the separator plate facing the anode and cathode electrodes of the membrane-electrode assembly is formed into a positive and negative shape and is provided as one, thereby reducing manufacturing costs and increasing energy efficiency. You can.

In addition, the separator plates and the membrane-electrode assembly are stacked alternately in the stacking direction, and the separator plates are rotated 180° in the plan view and stacked sequentially, so that the separator plates are stacked sequentially in the flow path portion of the separator plates located at the top and bottom of the membrane-electrode assembly. As the formed irregularities correspond to each other, it is possible to prevent the flow path of the separator plate stacked at the top from being blocked by the separator plate stacked at the bottom.

In addition, irregularities are formed in one distribution part and the other distribution part located on both sides of the flow path to distribute the flow of fluid, and the unevenness of the one distribution part and the other distribution part are formed in opposite shapes to rotate the separator plate. Even when stacked, the irregularities formed in the distribution portion on one side and the distribution portion on the other side of the separator plates located at the top and bottom of the membrane-electrode assembly correspond to each other, so that fluid movement and distribution can be smoothly achieved.

Figure 1 is an exploded perspective view illustrating an electrolysis device according to a first embodiment of the present invention.

Figure 2 is a plan view illustrating a separator plate in the electrolysis device according to the first embodiment of the present invention.

Figure 3 is an exemplary plan view showing a state in which the separator plate is rotated in the electrolysis device according to the first embodiment of the present invention.

Figure 4 is a cross-sectional view taken along line A-A' in Figure 1.

Figure 5 is an enlarged view of area C in Figure 4.

FIG. 6 is a view showing only the separator portion in FIG. 5.

Figure 7 is a cross-sectional view taken along line B-B' in Figure 1.

FIG. 8 is an exploded view showing area D in FIG. 7.

Figure 9 is an exploded perspective view illustrating an electrolysis device according to a second embodiment of the present invention.

Figure 10 is a cross-sectional view taken along line A1-A1' in Figure 9.

FIG. 11 is an enlarged view of area C1 in FIG. 10.

FIG. 12 is a cross-sectional view taken along line B1-B1' in FIG. 9.

FIG. 13 is an exploded view showing area D1 in FIG. 12.

Figure 14 is a perspective view showing a protective layer in the electrolysis device according to the second embodiment of the present invention.

Figure 15 is an exploded perspective view illustrating an electrolysis device according to a third embodiment of the present invention.

Figure 16 is a cross-sectional view taken along line A2-A2' in Figure 15.

FIG. 17 is an enlarged view of area C2 in FIG. 16.

FIG. 18 is a cross-sectional view taken along line B2-B2' in FIG. 15.

FIG. 19 is an exploded view of area D2 in FIG. 18.

The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In this specification, when adding reference numbers to components in each drawing, it should be noted that identical components are given the same number as much as possible even if they are shown in different drawings. Additionally, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Also, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention will be omitted.

제1 실시예에 따른 전기분해 장치Electrolysis device according to the first embodiment

Figure 1 is an exploded perspective view illustrating an electrolysis device according to a first embodiment of the present invention, and Figure 2 is a plan view illustrating a separator plate in an electrolysis device according to a first embodiment of the present invention. Figure 3 is an exemplary plan view showing a state in which the separator plate is rotated in the electrolysis device according to the first embodiment of the present invention. Additionally, FIG. 4 is a cross-sectional view taken along line A-A' in FIG. 1, and FIG. 5 is an enlarged view of area C in FIG. 4. Here, FIG. 3 shows a state in which the separator plate shown in FIG. 2 is rotated 180° about a rotation axis parallel to the stacking direction.

Referring to Figures 1 to 5, the electrolysis device 10 according to the first embodiment of the present invention is located between a plurality of separator plates (110, 120, 130, 140) and a plurality of separator plates (110, 120, 130, 140), and a plurality of electrodes ( 213) and a membrane-electrode assembly 210 including a separator 214, and the

separator plates

110, 120, 130, and 140 are respectively disposed on one side (110a, 120a, 130a, 140a) and the other side (110b, 120b, 130b, 140b). Flow passage parts (F1, F2) forming the first flow path (P1) and the second flow path (P2) through which fluid moves, one side distribution parts (113, 115) located on one side of the flow path parts (F1, F2), and the flow path It includes other

side distribution parts

114 and 116 located on the other side of the parts F1 and F2. Additionally, the electrolysis device 10 according to the first embodiment of the present invention may further include a first gasket 311 and a second gasket 312.

In more detail, referring to FIG. 1, the electrolysis device 10 according to the first embodiment can electrolyze carbon dioxide (CO2) by causing an electrochemical reduction reaction of carbon dioxide (CO2).

The electrolysis device 10 may include a plurality of

separator plates

110, 120, 130, and 140 and a membrane-electrode assembly 210 positioned between the plurality of

separator plates

110, 120, 130, and 140.

The

separator plates

110, 120, 130, and 140 and the membrane-electrode assembly 210 are alternately stacked, and the

separator plates

110 and 140 may be positioned at the uppermost and lowermost sides in the stacking direction (S). At this time, the

separator plates

110, 120, 130, and 140 can be rotated 180° around the rotation axis R parallel to the stacking direction and stacked sequentially. Here, the stacking direction (S) may be parallel to the Z-axis direction, for example, when referring to FIG. 1.

Referring to FIGS. 4 and 5 , the membrane-electrode assembly 210 is located between a plurality of

separators

110, 120, 130, and 140, and includes a plurality of electrodes 213 and a separator 214 located between the plurality of electrodes 213. may include. In the membrane-electrode assembly 210, the electrode 213 may face the passage portions F1 and F2 of the

separator plates

110, 120, 130, and 140.

In addition, the plurality of electrodes 213 includes a first electrode 211 and a second electrode 212, and the first electrode 211 and the second electrode 212 are alternately positioned in the stacking direction (S). You can.

In the plurality of electrodes 213, the thickness t1 of the first electrode 211 facing one

surface

110a, 120a, 130a, 140a of the

separator plates

110, 120, 130, 140 is greater than the

other surfaces

110b, 120b of the

separator plates

110, 120, 130, 140. The thickness t2 of the second electrode 212 facing 130b and 140b may be formed to be thick.

At this time, the first electrode 211 faces one side (110a, 120a, 130a, 140a) of the separator plates (110, 120, 130, 140), and the second electrode 212 faces the other side (110b, 120b, 130b, You can face 140b).

Here, for example, the first electrode 211 may be an anode, and the second electrode 212 may be a cathode. Or, as another example, the first electrode 211 may be a cathode and the second electrode 212 may be an anode.

The separator 214 is made of an ion exchange membrane (IEM) made of an insulating material, allowing ions to move between the anode and the cathode. Additionally, the membrane-electrode assembly 210 can cause an electrochemical reduction reaction. At this time, the membrane-electrode assembly 210 may, for example, electrolyze carbon dioxide (CO2) into carbon monoxide (CO) or ethylene (C2H4).

FIG. 6 is a view showing only the separator portion in FIG. 5.

Referring to FIGS. 1 and 4 to 6 , the

separation plates

110, 120, 130, and 140 may include passage portions F1 and F2,

distribution portions

113 and 115 on one side, and

distribution portions

114 and 116 on the other side.

The flow path portions (F1, F2) are uneven and form a first flow path (P1) and a second flow path ( P2) can be formed.

The concavo-convex shape of the flow path portions (F1, F2) is formed asymmetrically in the width direction (W) of the separator plates (110, 120, 130, 140), and the separator plates (110, 120, 130, 140) are located on the upper and lower sides with the membrane-electrode assembly 210 in between. The uneven shapes of may correspond to each other.

The flow portions (F1, F2) have positive engravings (111a, 112a, 121a, 122a) and engravings (111b, 112b, 121b, 122b) alternately formed on one surface (110a, 120a, 130a, 140a) of the separator plates (110, 120, 130, 140). The

first passage portions

111 and 121 are provided with concavo-convex shapes to form the first passage P1, and the

first passage portions

111 and 121 are formed on the

other surfaces

110b, 120b, 130b and 140b of the

separator plates

110, 120, 130 and 140. The second channel is provided with an uneven shape in which the

intaglios

112b, 122b and the embossings 112a, 122a are alternately formed corresponding to the embossings 111a and 121a and the

intaglios

111b and 121b, thereby forming the second flow path P2. It may include

flow paths

112 and 122.

The

first passage portions

111 and 121 face the electrode 213, the first passage P1 through which the raw material fluid moves is open toward the electrode 213, and the

second passage portions

112 and 122 face the electrode 213 and Facing each other, the second flow path P2 through which the raw material fluid moves may be opened toward the electrode 213. Here, the raw material fluid may include, for example, carbon dioxide (CO2) and an electrolyte solution. At this time, the electrolyte solution may include water (H2O).

Referring to FIGS. 2, 4, and 5, the

reliefs

111a, 121a of the

first flow portions

111, 121 formed on the active area A1 of one

surface

110a, 120a, 130a, 140a of the

separator plates

110, 120, 130, and 140. is formed in a protruding form with respect to the inactive area (B1), and the other surfaces (110b, 120b, 130b, 140b) of the separator plates (110, 120, 130, 140) and the intaglio (112b) of the second flow path portions (112, 122) formed on the active area (A2), 122b) may be formed in a concave shape with respect to the inactive area B2. At this time, the thickness t2 of the second electrode 212 in the membrane-electrode assembly 210 is determined by the relief ( It may be formed to be equal to the sum of the protrusion height (h0) of 111a and 121a) and the thickness (t1) of the first electrode 211.

The first flow path (P1) is formed in the concave portions (111b, 121b) of the first flow path portions (111, 121), and the second flow path (P2) is formed in the concave portions (112b, 122b) of the second flow path portions (112, 122). and can be located on the same line in the stacking direction (S).

The first flow path (P1) and the second flow path (P2) may have a parallel shape. At this time, for example, the

reliefs

111a, 121a, 112a, 122a and the

depressions

111b, 121b, 112b, 122b formed on the

first passage portions

111, 121 and the

second passage portions

112, 122 of the

separation plates

110, 120, 130, 140 are It is formed along the width direction (W) of the separator plates (110, 120, 130, 140), and the first flow path (P1) and the second flow path (P2) may form a passage extending along the longitudinal direction (L) of the separator plates (110, 120, 130, 140). there is. Here, for example, the width direction (W) may be the X-axis direction, and the longitudinal direction (L) may be the Y-axis direction.

The embossed portions of the

first passage portions

111 and 121 and the

second passage portions

112 and 122 face each other through the membrane-electrode assembly 210 and may be in contact with the plurality of electrodes 213 .

FIG. 7 is a cross-sectional view taken along line B-B' in FIG. 1, and FIG. 8 is an exploded view showing area D in FIG. 7.

Referring to FIGS. 1 to 3, 7, and 8, one

side distribution portions

113 and 115 are located on one side of the flow path portions F1 and F2 in the plan view, and the other

side distribution portions

114 and 116 are located in the flow path portion in the plan view. It may be located on the other side of parts F1 and F2.

One

side distribution portions

113 and 115 and the other

side distribution portions

114 and 116 form irregularities to form a distribution passage communicating with the first flow path P1 and the second flow path P2, and the one

side distribution parts

113 and 115 and the other distribution portions The irregularities of (114,116) can be formed in opposite shapes.

The distribution path is a first one-side distribution path (V11) and a second side distribution path (V11) formed on one side (110a, 120a, 130a, 140a) and the other side (110b, 120b, 130b, 140b) of the separation plates (110, 120, 130, 140) in one side distribution portions (113, 115). The first other side distribution path formed on one side (V12) and one side (110a, 120a, 130a, 140a) and the other side (110b, 120b, 130b, 140b) of the separation plates (110, 120, 130, 140) in the other side distribution portions (114, 116) ( V21) and a second other side distribution path (V22). Here, the first one-side distribution passage (V11) and the first other distribution passage (V21) are in communication with the first flow path (P1), and the second one-side distribution passage (V12) and the second other distribution passage (V22) are connected to the second distribution passage (V11) and the first other distribution passage (V21). It can be connected to Euro (P2).

Here, the one-

side distribution portions

113 and 115 have reliefs (113a, 115a, 123a, 125a) and depressions (113b, 115b, 123b, 125b) alternately on one side (110a, 120a, 130a, 140a) of the separation plates (110, 120, 130, 140). The first one-side distribution part 113, which is provided in a concavo-convex shape and forms the first one-side distribution path V11, is provided on the

other surfaces

110b, 120b, 130b, and 140b of the

separation plates

110, 120, 130, and 140. The

intaglios

115b, 125b and the embossings 115a, 125a are provided in an uneven form in an alternating manner corresponding to the embossings 113a, 123a and

intaglios

113b, 123b formed in 113), so as to form a second one-side distribution channel V12. ) may include a second one-side distribution portion (115, 125, 135, 145) forming a Here, the

reliefs

113a, 115a, 123a, and 125a formed on the first one-side distribution portion 113 and the second one-

side distribution portions

115, 125, 135, and 145, respectively, may contact the separator 214 of the membrane-electrode assembly 210. At this time, the

intaglios

113b and 123b formed in the first one-side distribution portion 113 are the first intaglios 113b-1 and the second intaglios with a smaller intaglio depth in the stacking direction S than the first intaglios 113b-1. It may include an intaglio (113b-2). Here, in the membrane-electrode assembly 200, the separator 214 includes one

distribution part

113 and 115, another

distribution part

114 and 116, a first gasket 311, and a second gasket 312 of the

separator plates

110, 120, 130, and 140. can be faced (see Figure 5).

In addition, the other

side distribution portions

114 and 116 are alternately formed with positive and negative engravings on the one surfaces 110a, 120a, 130a, and 140a of the

separation plates

110, 120, 130, and 140, and form the first other side distribution passage V21. (114) and the other surfaces (110b, 120b, 130b, 140b) of the separation plates (110, 120, 130, 140) are alternately formed with engravings and engravings corresponding to the embossing and engravings formed on the first other side distribution portion 114, and the second one side distribution channel It may include a second other side distribution unit (116, 126, 136, 146) forming (V12).

Meanwhile, the

separation plates

110, 120, 130, and 140 of the electrolysis device 10 according to the first embodiment of the present invention are manufactured through mold processing, but may be manufactured in one mold and have the same shape. Here, the

separation plates

110, 120, 130, and 140 can be formed by pressing one metal plate. At this time, flow path portions F1 and F2, one side distribution portion, and the other

side distribution portions

114 and 116 may be formed in the

separation plates

110, 120, 130, and 140.

Referring to FIGS. 2, 4, and 5, the first gasket 311 is disposed on the inactive area B1 of one

surface

110a, 120a, 130a, 140a of the

separator plates

110, 120, 130, and 140, and the second gasket 312 ) may be disposed on the inactive area B2 of the

other surfaces

110b, 120b, 130b, and 140b of the

separator plates

110, 120, 130, and 140.

In addition, the first gasket 311 has a thickness g1 thicker than the first electrode 211 in the stacking direction S, and the second gasket 312 has a thickness g2 in the stacking direction S. It may be formed in the same way as the two electrodes 212. Here, the first gasket 311 and the second gasket 312 may have the same thickness (g1, g2) in the stacking direction (S). At this time, for example, the first gasket 311 and the second gasket 312 have a thickness of 0.5T, the second electrode 212 has a thickness of 0.5T, the separator 214 has a thickness of 0.1T, and the first electrode 211 has a thickness of 0.25T. It may be T, but the present invention is not necessarily limited thereto.

In addition, the first gasket 311 and the second gasket 312 may be located on the same line in the stacking direction (S).

In addition, the first gasket 311 is provided along the edge of the active area (A1) on one side (110a, 120a, 130a, 140a) of the separator plates (110, 120, 130, 140), and is located on one side (110a, 120a, 130a, 140a) of the active area ( To maintain the airtightness of A1), the second gasket 312 is provided along the edge of the active area A2 of the

other surfaces

110b, 120b, 130b, and 140b of the

separator plates

110, 120, 130, and 140. (110b, 120b, 130b, 140b) The confidentiality of the active area (A2) can be maintained.

Meanwhile, the electrolysis device 10 according to the first embodiment of the present invention includes one side edge gasket 411 provided along the edge of one side (110a, 120a, 130a, 140a) of the separator plates (110, 120, 130, 140) and the separator plates (110, 120, 130, 140). ) may further include a surface edge gasket 412 provided along the edges of the

surfaces

110b, 120b, 130b, and 140b. Here, the thickness in the stacking direction (S) of the edge gasket 411 on one side corresponds to the thickness (g1) of the first gasket 311, and the thickness in the stacking direction (S) of the edge gasket 511 on the other side corresponds to the thickness of the second gasket. It may correspond to the thickness (g2) of (312).

The electrolysis device 10 according to the first embodiment of the present invention configured as described above has the

separator plates

110, 120, 130, 140 facing the anode and cathode electrodes 213 of the membrane-electrode assembly 210 with embossing (111a, 121a). , 112a, 122a) and

engravings

111b, 121b, 112b, 122b are formed into one unit, thereby reducing manufacturing costs and increasing energy efficiency. That is, when electrochemically converting carbon dioxide or decomposing water to produce hydrogen, there is no need to supply separate cooling water by supplying an aqueous solution-based electrolyte to the anode side, so there is an embossing (111a, 121a, 112a, 122a) and

engravings

111b, 121b, 112b, 122b can be formed to form a flow path between the anode and the cathode. Accordingly, manufacturing costs can be reduced by using one separator plate (110, 120, 130, 140) instead of two separator plates, and the interface resistance that occurs when using two separator plates is not generated, so energy efficiency can be increased by reducing resistance.

In addition, the separator plates (110, 120, 130, 140) and the membrane-electrode assembly 210 are stacked alternately, and the separator plates (110, 120, 130, 140) are rotated 180° about the rotation axis (R) parallel to the stacking direction and sequentially stacked in the stacking direction (S). ) by the embossings (111a, 121a, 112a, 122a) of the separator plates (120, 130, 140) stacked at the bottom, and the intaglios (111b, 121b, 112b, 122b) of the separator plates (110, 120, 130) stacked on the top in the stacking direction (S). It is possible to prevent the channel formed in the channel from being blocked.

In addition, the flow of fluid is distributed by forming irregularities in one distribution unit and the other distribution unit located on both sides of the flow path portions F1 and F2, and the irregularities of the one

distribution units

113 and 115 and the

other distribution units

114 and 116 are each other. Even if the

separator plates

110, 120, 130, and 140 are formed in opposite shapes and stacked while rotating, one

side distribution portion

113, 115 and the other

side distribution portion

114, 116 of the

separator plates

110, 120, 130, 140 located above and below the membrane-electrode assembly 210. ), the irregularities formed in correspond to each other, so that the movement and distribution of fluid can be smoothly achieved.

제2 실시예에 따른 전기분해 장치Electrolysis device according to the second embodiment

Hereinafter, an electrolysis device according to a second embodiment of the present invention will be described.

Figure 9 is an exploded perspective view illustrating an electrolysis device according to a second embodiment of the present invention, Figure 10 is a cross-sectional view taken along line A1-A1' in Figure 9, and Figure 11 is C1 in Figure 10. This is a drawing showing an enlarged area.

9 to 11, the electrolysis device 1000 according to the second embodiment of the present invention includes a plurality of separation plates (1110, 1120, 1130, 1140), and a plurality of separation plates (1110, 1120, 1130). , 1140) and includes a membrane-electrode assembly 210 including a plurality of electrodes 213 and a separator 214, and the

separator plates

1110, 1120, 1130, and 1140 have one

surface

1110a and 1120a. , 1130a, 1140a) and

other surfaces

1110b, 1120b, 1130b, 1140b, respectively, forming a first flow path (P1') and a second flow path (P2') through which fluid moves, flow portions (F1', F2'), It includes one

side distribution portions

113 and 115 located on one side of the flow path portions F1' and F2', and

other distribution portions

114 and 116 located on the other side of the flow path portions F1' and F2'. At this time, the electrolysis device 1000 according to the second embodiment of the present invention has a protective layer located between the separator 214 of the membrane-electrode assembly 210 and one surface of the

separator plates

1110, 1120, 1130, and 1140. It may include (1500). Additionally, the electrolysis device 1000 according to the second embodiment of the present invention may further include a first gasket 311 and a second gasket 312.

Compared to the electrolysis device according to the first embodiment described above, the electrolysis device according to the second embodiment of the present invention includes the separator 214 and the

separator plates

1110, 1120, and 1130 of the membrane-electrode assembly 210. There is a difference in that a protective layer 1500 is further provided between one side of 1140). Therefore, this embodiment omits or briefly describes content that overlaps with the above-described embodiment, and focuses on the differences.

In more detail, the electrolysis device 1000 according to the second embodiment includes a plurality of separator plates (1110, 1120, 1130, 1140) and a membrane-electrode located between the plurality of separator plates (1110, 1120, 1130, 1140). It may include a conjugate 210.

The

separator plates

1110, 1120, 1130, and 1140 and the membrane-electrode assembly 210 are alternately stacked, and the

separator plates

110 and 140 may be located at the uppermost and lowermost sides in the stacking direction (S). At this time, the separator plates (1110, 1120, 1130, and 1140) can be rotated 180° around the rotation axis (R) parallel to the stacking direction and stacked sequentially. Here, the stacking direction (S) may be parallel to the Z-axis direction, for example, when referring to FIG. 9 .

The membrane-electrode assembly 210 is located between a plurality of

separators

1110, 1120, 1130, and 1140 and may include a plurality of electrodes 213 and a separator 214 located between the plurality of electrodes 213. You can.

The thickness (t1) of the first electrode 211 facing one side (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, 1140) of the plurality of electrodes 213 is greater than the thickness (t1) of the separator plates (1110, 1120, 1130, 1140). The thickness t2 of the second electrode 212 facing the

other surfaces

1110b, 1120b, 1130b, and 1140b of , 1130 and 1140 may be formed to be thick.

At this time, the first electrode 211 faces one side (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, 1140), and the second electrode 212 faces the separator plates (1110, 1120, 1130). , 1140) can face the other surfaces (1110b, 1120b, 1130b, 1140b).

The separator 214 is made of an ion exchange membrane (IEM) made of an insulating material, allowing ions to move between the anode and the cathode.

The

separation plates

1110, 1120, 1130, and 1140 may include passage portions F1' and F2', a distribution portion 115 on one side, and a distribution portion 116 on the other side.

The flow passage portions (F1', F2') are uneven and form a first flow path (P1') and a first flow path (P1') through which fluid moves on one side (1110a, 1120a, 1130a, 1140a) and the other side (1110b, 1120b, 1130b, 1140b), respectively. 2 A flow path (P2') can be formed.

The convex-convex shape of the flow passage portions (F1', F2') is formed asymmetrically in the width direction (W) of the separator plates (1110, 1120, 1130, 1140), and is formed on the upper and lower sides with the membrane-electrode assembly 210 in between. The uneven shapes of the

separation plates

1110, 1120, 1130, and 1140 located in may correspond to each other.

The flow portions (F1', F2') are engraved (1111a, 1112a, 1121a, 1122a) and engraved (1111b, 1112b) on one side (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, 1140). The first

flow passage portions

1111 and 1121 are provided with an uneven shape in which 1121b and 1122b are alternately formed to form the first flow passage P1', and the other surface 1110b of the

separator plates

1110, 1120, 1130 and 1140. , 1120b, 1130b, 1140b, the

engravings

1112b, 1122b and

embossings

112a, 122a are alternately corresponding to the embossings 1111a, 1121a and intaglios 1111b, 1121b formed in the first

flow passage portions

1111, 1121. It may include second

flow passage portions

1112 and 1122 that have a concavo-convex shape and form a second flow passage P2'.

The

first passage portions

1111 and 1121 face the electrode 213, the first passage P1' through which the raw material fluid moves is open toward the electrode 213, and the

second passage portions

1112 and 1122 are The second flow path P2', which faces the electrode 213, and through which the raw material fluid moves, may be open toward the electrode 213. Here, the raw material fluid may include, for example, carbon dioxide (CO2) and an electrolyte solution. At this time, the electrolyte solution may include water (H2O).

The reliefs (1111a, 1121a) of the first passage portions (1111, 1121) formed in the active area of one surface (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, 1140) have a protruding shape with respect to the inactive area. and the engravings (1112b, 1122b) of the second passage portions (1112, 1122) formed on the active areas of the other surfaces (1110b, 1120b, 1130b, 1140b) of the separator plates (1110, 1120, 1130, 1140) are in the inactive areas. It can be formed in a concave shape. At this time, the thickness t2 of the second electrode 212 in the membrane-electrode assembly 210 is determined by the first flow path portion formed on one

surface

1110a, 1120a, 1130a, and 1140a of the

separator plates

1110, 1120, 1130, and 1140. It may be formed to be equal to the sum of the protrusion height (h0) of the reliefs (1111a, 1121a) of (1111, 1121) and the thickness (t1) of the first electrode 211.

The first flow path (P1') is formed in the concave portion (1111b, 1121b) of the first flow path portions (1111, 1121), and the second flow path (P2') is formed in the concave portion (1112b) of the second flow path portions (1112, 1122). , 1122b), and may be located on the same line in the stacking direction (S).

The first flow path (P1') and the second flow path (P2') may have a parallel shape. At this time, for example, reliefs (1111a, 1121a, 1112a, 1122a) and depressions formed on the first passage portions (1111, 1121) and the second passage portions (1112, 1122) of the separation plates (1110, 1120, 1130, 1140). (1111b, 1121b, 1112b, 1122b) are formed along the width direction (W) of the separation plates (1110, 1120, 1130, 1140), and the first flow path (P1') and the second flow path (P2') are the separation plates. A passage extending along the longitudinal direction (L) of (1110, 1120, 1130, 1140) may be formed. Here, for example, the width direction (W) may be the X-axis direction, and the longitudinal direction (L) may be the Y-axis direction.

The embossed portions of the

first passage portions

1111 and 1121 and the

second passage portions

1112 and 1122 face each other through the membrane-electrode assembly 210 and may be in contact with the plurality of electrodes 213 .

FIG. 12 is a cross-sectional view taken along line B1-B1' in FIG. 9, and FIG. 13 is an exploded view showing area D1 in FIG. 12.

Referring to FIGS. 9, 12, and 13, one side distribution portion 115 is located on one side of the flow path portions F1' and F2' in the plan view, and the other side distribution portion 116 is located in the flow path portion in the plan view. It may be located on the other side of (F1', F2').

One side distribution part 115 and the other side distribution part 116 form irregularities to form a distribution path communicating with the first flow path (P1') and the second flow path (P2'), and the one side distribution part 115 and the other side The irregularities of the distribution unit 116 may be formed in opposite shapes.

The distribution path is a first one-side distribution path formed on one side (1110a, 1120a, 1130a, 1140a) and the other side (1110b, 1120b, 1130b, 1140b) of the separation plates (1110, 1120, 1130, 1140) in the one side distribution portions (113, 115). (V11) and the second one-side distribution path (V12), one side (1110a, 1120a, 1130a, 1140a) and the other side (1110b, 1120b) of the separation plates (1110, 1120, 1130, 1140) in the other side distribution portions (114, 116), It may include a first other side distribution path (V21) and a second other side distribution path (V22) formed in 1130b and 1140b). Here, the first one-side distribution passage (V11) and the first other distribution passage (V21) are in communication with the first flow path (P1'), and the second one-side distribution passage (V12) and the second other distribution passage (V22) are connected to the first passage (P1'). 2 Can be connected to Euro (P2').

Here, one

side distribution portions

113 and 115 are embossed (113a, 115a, 123a, 125a) and engraved (113b, 115b, 123b) on one side (1110a, 1120a, 1130a, 1140a) of the separation plates (1110, 1120, 1130, 1140). The other surfaces (1110b, 1120b) of the first one-side distribution portion 113 and the separation plates (1110, 1120, 1130, and 1140) are provided in an uneven shape with alternating convexities and convexities, forming the first one-side distribution passage (V11). Engravings (115b, 125b) and embossings (115a, 125a) are formed alternately in correspondence to the embossings (113a, 123a,) and engravings (113b, 123b) formed on the first one-side distribution portion 113 at 1130b and 1140b. It may include second one-

side distribution portions

115, 125, 135, and 145 that are provided in a concavo-convex shape and form a second one-side distribution passage V12. Here, the

reliefs

side distribution portions

intaglios

113b and 123b formed in the first one-side distribution portion 113 are the first intaglios 113b-1 and the second intaglios with a smaller intaglio depth in the stacking direction S than the first intaglios 113b-1. It may include an intaglio (113b-2).

In addition, the other

side distribution portions

114 and 116 are alternately formed with positive and negative engravings on the one surfaces 1110a, 1120a, 1130a, and 1140a of the

separation plates

1110, 1120, 1130, and 1140, and form the first other side distribution passage V21. On the other surfaces (1110b, 1120b, 1130b, 1140b) of the first other distribution unit 114 and the

separation plates

1110, 1120, 1130, and 1140, engravings are engraved corresponding to the relief and engraving formed on the first other distribution unit 114. And it may include second other

side distribution portions

116, 126, 136, and 146 that are alternately formed in relief and form a second one side distribution path V12.

Meanwhile, the

separator plates

1110, 1120, 1130, and 1140 of the electrolysis device 1000 according to the second embodiment of the present invention are manufactured through mold processing, but may be manufactured in one mold and have the same shape. Here, the

separation plates

1110, 1120, 1130, and 1140 can be formed by pressing one metal plate. At this time, flow passage portions F1' and F2', one side distribution portion 115, and the other distribution portion 116 may be formed in the

separation plates

1110, 1120, 1130, and 1140.

Referring to Figures 9 to 11, the first gasket 311 is disposed in the inactive area of one side (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, and 1140), and the second gasket 312 is The

other surfaces

1110b, 1120b, 1130b, and 1140b of the

separator plates

1110, 1120, 1130, and 1140 may be disposed in inactive areas.

In addition, the first gasket 311 is provided along the edge of the active area of one side (1110a, 1120a, 1130a, 1140a) of the separator plates (1110, 1120, 1130, and 1140), To maintain the airtightness of the active area, the second gasket 312 is provided along the edges of the active area on the other surfaces (1110b, 1120b, 1130b, 1140b) of the separator plates (1110, 1120, 1130, and 1140), , 1120, 1130, 1140) can maintain the confidentiality of the active area (1110b, 1120b, 1130b, 1140b).

Referring to FIGS. 9 to 11 and 14 , the protective layer 1500 may be positioned between the separator 214 of the membrane-electrode assembly 210 and one surface of the

separator plates

1110, 1120, 1130, and 1140. Here, the protective layer 1500 may be positioned between the separator 214 of the membrane-electrode assembly and the first distribution portion on one side and the distribution portion on the first other side of the

separator plates

1110, 1120, 1130, and 1140. The protective layer 1500 faces the separator 214 and can protect the separator 214 and block the movement of ions in the stacking direction. In addition, through the protective layer 1500, the bottom surface height of the second one-side distribution unit and the second other distribution unit can be positioned to correspond to the bottom surface height of the second flow path in the stacking direction.

Additionally, the protective layer 1500 may extend between the first gasket 311 and the second gasket 312. Here, the protective layer 1500 may have a through hole 1500a formed so as not to face the flow path portion.

And, the protective layer 1500 is a first protective layer 1501 facing the first one-side distribution unit and the first other distribution unit, and a second protective layer located between the first gasket 311 and the second gasket 312. May include layer 1502.

At this time, for example, the first protective layer 1501 and the second protective layer 1502 may be formed integrally with a protective film.

Meanwhile, as another example, the first protective layer 1501 may be formed of a protective film, and the second protective layer 1502 may be formed of an auxiliary gasket.

The protective film may be formed of, for example, PET material. The auxiliary gasket may be made of, for example, a plate made of Teflon or steel.

Meanwhile, for example, the thickness (m) of the protective layer 1500 may be 0.25T.

The electrolysis device 1000 according to the second embodiment of the present invention configured as described above includes

separator plates

1110, 1120, 1130, and 1140 facing the anode and cathode electrodes 213 of the membrane-electrode assembly 210. By forming embossings (1111a, 1121a, 1112a, 1122a) and engravings (1111b, 1121b, 1112b, 1122b) into one piece, energy efficiency can be increased while reducing manufacturing costs. In other words, when electrochemically converting carbon dioxide or decomposing water to produce hydrogen, an aqueous solution-based electrolyte is supplied to the anode, so there is no need to supply separate cooling water, so it is connected to one separator plate (1110, 1120, 1130, 1140). The flow path of the anode and the cathode can be formed by forming embossings (1111a, 1121a, 1112a, 1122a) and engravings (1111b, 1121b, 1112b, 1122b). Accordingly, manufacturing costs can be reduced by using one separator plate (1110, 1120, 1130, 1140) instead of two separators, and the interface resistance that occurs when using two separator plates is not generated, increasing energy efficiency by reducing resistance. It can be raised.

In addition, the separator plates (1110, 1120, 1130, 1140) and the membrane-electrode assembly 210 are stacked alternately, and the separator plates (1110, 1120, 1130, 1140) are centered on the rotation axis (R) parallel to the stacking direction. The separator plates (110, 120, 130) are rotated 180° and stacked sequentially, and are stacked on top in the stacking direction (S) by the reliefs (1111a, 1121a, 1112a, 1122a) of the separator plates (120, 130, 140) stacked on the bottom in the stacking direction (S). ) can prevent the channels formed in the intaglios (1111b, 1121b, 1112b, and 1122b) from being blocked.

In addition, the flow of fluid is distributed by forming irregularities in one distribution part and the other distribution part located on both sides of the flow path portions F1' and F2', and the unevenness of the one distribution part 115 and the other distribution part 116 are formed in opposite shapes to each other, so that even when the separator plates (1110, 1120, 1130, and 1140) are rotated and stacked, the separator plates (1110, 1120, 1130, and 1140) are located at the top and bottom of the membrane-electrode assembly 210. ) The unevenness formed on one side of the distribution part 115 and the other side of the distribution part 116 corresponds to each other, so that the movement and distribution of fluid can be smoothly achieved.

제3 실시예에 따른 전기분해 장치Electrolysis device according to the third embodiment

Hereinafter, an electrolysis device according to a third embodiment of the present invention will be described.

Figure 15 is an exploded perspective view illustrating an electrolysis device according to a third embodiment of the present invention, Figure 16 is a cross-sectional view taken along line A2-A2' in Figure 15, and Figure 17 is C2 in Figure 16. This is a drawing showing an enlarged area.

15 to 17, the electrolysis device 2000 according to the third embodiment of the present invention includes a plurality of separator plates (2110, 2120, 2130, 2140), and a plurality of separator plates (2110, 2120, 2130). , 2140, and includes a membrane-electrode assembly 2210 including a plurality of electrodes 2213 and a separator 2214, and the

separator plates

2110, 2120, 2130, and 2140 have one side (2110a, 2120a). , 2130a, 2140a) and other surfaces (2110b, 2120b, 2130b, 2140b), forming a first flow path (P1") and a second flow path (P2") through which fluid moves, respectively, flow portions (F1", F2"), Includes one

side distribution parts

2113 and 2115 located on one side of the flow path portions F1" and F2", and the other side distribution portions 2114 and 2116 located on the other side of the flow path portions F1" and F2". do. At this time, the electrolysis device 2000 according to the third embodiment of the present invention has a protective layer located between the separator 2214 of the membrane-electrode assembly 2210 and one surface of the

separator plates

2110, 2120, 2130, and 2140. It may include (2500). Additionally, the electrolysis device 2000 according to the third embodiment of the present invention may further include a first gasket 2311 and a second gasket 2312.

Compared to the electrolysis device according to the first and second embodiments described above, the electrolysis device according to the third embodiment of the present invention has a separator 2214 and a separator plate 2110 of the membrane-electrode assembly 2210. , 2120, 2130, 2140), a protective layer 2500 is further provided between one surface, and the thickness of the plurality of electrodes has a certain difference. Therefore, this embodiment omits or briefly describes content that overlaps with the above-described embodiment, and focuses on the differences.

In more detail, the electrolysis device 2000 according to the third embodiment includes a plurality of separator plates (2110, 2120, 2130, 2140) and a membrane-electrode located between the plurality of separator plates (2110, 2120, 2130, 2140). It may include a conjugate 2210.

The

separator plates

2110, 2120, 2130, and 2140 and the membrane-electrode assembly 2210 are alternately stacked, and the

separator plates

2110 and 2140 may be positioned at the uppermost and lowermost sides in the stacking direction (S). At this time, the

separator plates

2110, 2120, 2130, and 2140 can be rotated 180° around the rotation axis R parallel to the stacking direction and stacked sequentially. Here, the stacking direction (S) may be parallel to the Z-axis direction, for example, when referring to FIG. 15.

The membrane-electrode assembly 2210 is positioned between a plurality of

separators

2110, 2120, 2130, and 2140 and may include a plurality of electrodes 2213 and a separator 2214 positioned between the plurality of electrodes 2213. You can.

In addition, the plurality of electrodes 2213 includes a first electrode 2211 and a second electrode 2212, and the first electrode 2211 and the second electrode 2212 are alternately positioned in the stacking direction (S). You can.

The thickness (t1) of the first electrode 2211 facing one side (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, 2140) in the plurality of electrodes (2213) is greater than the thickness (t1) of the separator plates (2110, 2120, 2130, 2140). The thickness t2 of the second electrode 2212 facing the

other surfaces

2110b, 2120b, 2130b, and 2140b of , 2130 and 2140 may be formed to be the same.

At this time, the first electrode 2211 faces one side (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, 2140), and the second electrode 2212 faces the separator plates (2110, 2120, 2130). , 2140) can face the other side (2110b, 2120b, 2130b, 2140b).

Here, for example, the first electrode 2211 may be an anode, and the second electrode 2212 may be a cathode. Or, as another example, the first electrode 2211 may be a cathode and the second electrode 2212 may be an anode.

The separator 2214 is made of an ion exchange membrane (IEM) made of an insulating material, allowing ions to move between the anode and the cathode.

The

separation plates

2110, 2120, 2130, and 2140 may include passage portions F1" and F2",

distribution portions

2113 and 2115 on one side, and distribution portions 2114 and 2116 on the other side.

The flow passage portions (F1", F2") are irregularly formed to form a first flow path (P1") through which fluid moves on one side (2110a, 2120a, 2130a, 2140a) and the other side (2110b, 2120b, 2130b, 2140b), respectively. 2 flow paths (P2") can be formed.

The uneven shape of the flow path portions (F1", F2") is formed asymmetrically in the width direction (W) of the separator plates (2110, 2120, 2130, 2140), and is formed on the upper and lower sides with the membrane-electrode assembly 2210 in between. The uneven shapes of the

separation plates

2110, 2120, 2130, and 2140 located in may correspond to each other.

The flow portions (F1", F2") are embossed (2111a, 2112a, 2121a, 2122a) and engraved (2111b, 2112b, The first

flow passage portions

2111 and 2121 are provided with an uneven shape in which 2121b and 2122b are alternately formed to form a first flow passage P1", and the other surface 2110b of the

separator plates

2110, 2120, 2130 and 2140. , 2120b, 2130b, 2140b), the intaglios (2112b, 2122b) and the intaglios (112a, 122a) are alternated in correspondence with the embossments (2111a, 2121a) and intaglios (2111b, 2121b) formed in the first flow passage portions (2111, 2121). It may include second

flow passage portions

2112 and 2122 that have a concavo-convex shape and form a second flow passage P2".

The

first passage portions

2111 and 2121 face the electrodes 2213, the first passage P1" through which the raw material fluid moves is open toward the electrode 2213, and the

second passage portions

2112 and 2122 are A second flow path (P2") facing the electrode 2213 and through which the raw material fluid moves may be opened toward the electrode 2213. Here, the raw material fluid may include, for example, carbon dioxide (CO2) and an electrolyte solution. At this time, the electrolyte solution may include water (H2O).

The reliefs (2111a, 2121a) of the first flow portions (2111, 2121) formed in the active areas of one surface (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, 2140) have a protruding shape with respect to the inactive area. and the engravings (2112b, 2122b) of the second passage portions (2112, 2122) formed on the active areas of the other surfaces (2110b, 2120b, 2130b, 2140b) of the separator plates (2110, 2120, 2130, 2140) are in the inactive areas. It can be formed in a concave shape. At this time, in the membrane-electrode assembly 2210, the thickness t2 of the second electrode 2212 may be formed to be the same as the thickness t1 of the first electrode 2211.

The thickness t1 of the first electrode 2211 and the thickness t2 of the second electrode 2212 are the first electrodes formed on one

surface

2110a, 2120a, 2130a, and 2140a of the

separator plates

2110, 2120, 2130, and 2140. It may be formed to be equal to the protrusion height (h0) of the reliefs 2111a and 2121a of the

passage portions

2111 and 2121. At this time, the protrusion height (h0) of the reliefs (2111a, 2121a) of the first passage portions (2111, 2121) and the protrusion height of the reliefs (112a, 122a) of the second passage portions (2112, 2122) may be formed to be the same. . That is, the thickness (t1) of the first electrode 2211 and the thickness (t2) of the second electrode 2212 are the protrusion height (h0) of the reliefs (2111a, 2121a) of the first flow portions (2111, 2121) and the second electrode (2212). 2 It may be formed to be the same as the protrusion height of the

reliefs

112a and 122a of the

flow passage portions

2112 and 2122.

The first flow path (P1") is formed in the concave portion (2111b, 2121b) of the first flow path portions (2111, 2121), and the second flow path (P2") is formed in the concave portion (2112b) of the second flow path portions (2112, 2122). , 2122b), and may be located on the same line in the stacking direction (S).

The first flow path (P1") and the second flow path (P2") may have a parallel shape. At this time, for example, reliefs (2111a, 2121a, 2112a, 2122a) and depressions formed on the first passage portions (2111, 2121) and the second passage portions (2112, 2122) of the separation plates (2110, 2120, 2130, 2140) (2111b, 2121b, 2112b, 2122b) are formed along the width direction (W) of the separator plates (2110, 2120, 2130, 2140), and the first flow path (P1") and the second flow path (P2") are formed on the separator plates. A passage extending along the longitudinal direction (L) of (2110, 2120, 2130, 2140) may be formed. Here, for example, the width direction (W) may be the X-axis direction, and the longitudinal direction (L) may be the Y-axis direction.

The embossed portions of the

first passage portions

2111 and 2121 and the

second passage portions

2112 and 2122 face each other through the membrane-electrode assembly 2210 and may be in contact with a plurality of electrodes 2213.

FIG. 18 is a cross-sectional view taken along line B2-B2' in FIG. 15, and FIG. 19 is an exploded view showing area D2 in FIG. 18.

Referring to FIGS. 15, 18, and 19, one

side distribution portions

2113 and 2115 are located on one side of the flow path portions F1" and F2" in the plan view, and the other side distribution portions 2114 and 2116 are located in the plan view. It may be located on the other side of the flow path portions F1" and F2".

One side distribution portions (2113, 2115) and the other side distribution portions (2114, 2116) form irregularities to form a distribution passage communicating with the first flow path (P1") and the second flow path (P2"), and one side distribution part ( The irregularities of the distribution portions 2113 and 2115) and the other distribution portions 2114 and 2116 may be formed in opposite shapes.

The distribution path is a first side formed on one side (2110a, 2120a, 2130a, 2140a) and the other side (2110b, 2120b, 2130b, 2140b) of the separation plates (2110, 2120, 2130, 2140) in one side distribution portions (2113, 2115). One side (2110a, 2120a, 2130a, 2140a) and the other side (2110a, 2120a, 2130a, 2140a) and the other side ( It may include a first other side distribution path (V21) and a second other side distribution path (V22) formed in 2110b, 2120b, 2130b, and 2140b). Here, the first one-side distribution passage (V11) and the first other distribution passage (V21) are in communication with the first flow path (P1"), and the second one-side distribution passage (V12) and the second other distribution passage (V22) are connected to the first distribution passage (P1"). 2 It can be connected to Euro (P2").

Here, one

side distribution portions

2113 and 2115 are embossed (2113a, 2115a, 2123a, 2125a) and engraved (2113b, 2115b) on one side (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, 2140). , 2123b, 2125b) are provided in a concavo-convex shape formed alternately to form the first one-side distribution path (V11) and the other surface (2110b) of the first one-side distribution portion (2113) and the separation plates (2110, 2120, 2130, 2140) , 2120b, 2130b, 2140b), the

intaglios

115b, 125b and the

intaglios

115a, 125a are alternately corresponding to the embossings 113a, 123a, and

intaglios

113b, 123b formed on the first one-side distribution portion 2113. It may include second one-

side distribution portions

2115, 2125, 2135, and 2145 that are provided in a concavo-convex shape and form a second one-side distribution passage V12. Here, the

reliefs

2113a, 2115a, 2123a, and 2125a formed on the first one-side distribution part 2113 and the second one-

side distribution part

2115, 2125, 2135, and 2145, respectively, are the separator 2214 of the membrane-electrode assembly 2210. ) can be accessed. At this time, the

intaglios

2113b and 2123b formed in the first one-side distribution portion 2113 are the first intaglios 2113b-1 and the second intaglios with a smaller intaglio depth in the stacking direction S than the first intaglios 2113b-1. It may include an engraving (2113b-2).

In addition, the other side distribution portions 2114 and 2116 are alternately formed with positive and negative engravings on one side (2110a, 2120a, 2130a, and 2140a) of the

separator plates

2110, 2120, 2130, and 2140, and form the first other side distribution passage V21. Corresponds to the embossing and engraving formed on the first other distribution portion 2114 on the other surfaces (2110b, 2120b, 2130b, 2140b) of the first other distribution portion 2114 and the

separation plates

2110, 2120, 2130, and 2140. Thus, it may include second

side distribution portions

2116, 2126, 2136, and 2146 that are alternately engraved and embossed and form a second one side distribution path V12.

Meanwhile, the

separator plates

2110, 2120, 2130, and 2140 of the electrolysis device 2000 according to the third embodiment of the present invention are manufactured through mold processing, but may be manufactured in one mold and have the same shape. Here, the

separation plates

2110, 2120, 2130, and 2140 can be formed by pressing one metal plate. At this time, flow path portions (F1”, F2”), distribution portions on one side (2113, 2115), and distribution portions on the other side (2114, 2116) may be formed in the separation plates (2110, 2120, 2130, and 2140).

Referring to FIGS. 15 to 17, the first gasket 2311 is disposed in the inactive area of one side (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, and 2140), and the second gasket 2312 may be disposed on the inactive areas of the

other surfaces

2110b, 2120b, 2130b, and 2140b of the

separator plates

2110, 2120, 2130, and 2140.

Additionally, the first gasket 2311 and the second gasket 2312 may have thicknesses g1 and g2 equal to each other in the stacking direction S. Here, the thickness g1 of the first gasket 2311 and the thickness g2 of the second gasket 2312 may be formed to be the same as the thicknesses of the first electrode 2211 and the second electrode 2212. At this time, for example, the thickness of the first gasket 2311 and the second gasket 2312 is 0.25T, the thickness of the first electrode 2211 and the second electrode 2212 is 0.25T, and the thickness of the separator 2214 is 0.25T. It may be 0.1T, but the present invention is not necessarily limited thereto.

In addition, the first gasket 2311 and the second gasket 2312 may be located on the same line in the stacking direction (S).

In addition, the first gasket 2311 is provided along the edge of the active area of one side (2110a, 2120a, 2130a, 2140a) of the separator plates (2110, 2120, 2130, and 2140), To maintain the airtightness of the active area, the second gasket 2312 is provided along the edge of the active area on the other side (2110b, 2120b, 2130b, 2140b) of the

separator plates

2110, 2120, 2130, and 2140. , 2120, 2130, 2140), the confidentiality of the active area (2110b, 2120b, 2130b, 2140b) can be maintained.

The protective layer 2500 may be positioned between the separator 2214 of the membrane-electrode assembly 2210 and one surface of the

separator plates

2110, 2120, 2130, and 2140. Here, the protective layer 2500 is between the separator 2214 of the membrane-electrode assembly and the first one-side distribution part 2113 and the first other side distribution part 2114 of the

separator plates

2110, 2120, 2130, and 2140. can be located The protective layer 2500 faces the separator 2214 and can protect the separator 2214 and block the movement of ions in the stacking direction. In addition, through the protective layer 2500, the bottom surface height of the second one-side distribution unit and the second other distribution unit can be positioned to correspond to the bottom surface height of the second flow path in the stacking direction.

Additionally, the protective layer 2500 may extend between the first gasket 2311 and the second gasket 2312. Here, the protective layer 2500 may have a through hole 2500a formed so as not to face the flow path portion.

And, the protective layer 2500 is between the first protective layer 2501 facing the first one-side distribution part 2113 and the first other distribution part 2114, and the first gasket 2311 and the second gasket 2312. It may include a second protective layer 2502 located at.

At this time, for example, the first protective layer 2501 and the second protective layer 2502 may be formed integrally with a protective film.

Meanwhile, as another example, the first protective layer 2501 may be formed of a protective film, and the second protective layer 2502 may be formed of an auxiliary gasket. Here, the protective film may be formed of, for example, PET material. The auxiliary gasket may be made of, for example, a plate made of Teflon or steel.

Meanwhile, for example, the thickness (m) of the protective layer 2500 may be 0.25T.

The electrolysis device 2000 according to the third embodiment of the present invention configured as described above includes

separators

2110, 2120, 2130, and 2140 facing the anode and cathode electrodes 2213 of the membrane-electrode assembly 2210. By forming embossings (2111a, 2121a, 2112a, 2122a) and engravings (2111b, 2121b, 2112b, 2122b) into one piece, energy efficiency can be increased while reducing manufacturing costs. In other words, when electrochemically converting carbon dioxide or decomposing water to produce hydrogen, an aqueous solution-based electrolyte is supplied to the anode, so there is no need to supply separate cooling water, so it is connected to one separator plate (2110, 2120, 2130, 2140). The flow path of the anode and the cathode can be formed by forming positive engravings (2111a, 2121a, 2112a, 2122a) and engravings (2111b, 2121b, 2112b, 2122b). Accordingly, manufacturing costs can be reduced by using one separator plate (2110, 2120, 2130, 2140) instead of two separators, and the interface resistance that occurs when using two separator plates does not occur, increasing energy efficiency by reducing resistance. It can be raised.

In addition, the separator plates (2110, 2120, 2130, 2140) and the membrane-electrode assembly 2210 are stacked alternately, and the separator plates (2110, 2120, 2130, 2140) are centered on the rotation axis (R) parallel to the stacking direction. The separator plates (110, 120, 130) are rotated 180° and stacked sequentially, and are stacked on top in the stacking direction (S) by the reliefs (2111a, 2121a, 2112a, 2122a) of the separator plates (120, 130, 140) stacked on the bottom in the stacking direction (S). ) can prevent the channels formed in the intaglios (2111b, 2121b, 2112b, and 2122b) from being blocked.

In addition, the flow of fluid is distributed by forming irregularities in one distribution unit and the other distribution unit located on both sides of the flow path portions F1" and F2", and one distribution unit 115 and the other distribution unit 2114, 2116. The unevenness of the separator plates (2110, 2120, 2130, 2140) is formed in a shape opposite to each other, so that even if the separator plates (2110, 2120, 2130, 2140) are rotated and stacked, the separator plates (2110, 2120, 2130) are located at the top and bottom of the membrane-electrode assembly 2210. , 2140), the irregularities formed on one side of the

distribution parts

2113 and 2115 and the other side of the distribution parts 2114 and 2116 correspond to each other, so that movement and distribution of fluid can be smoothly achieved.

Although the present invention has been described in detail through specific examples, this is for the purpose of specifically illustrating the present invention, and the post-processing device according to the present invention is not limited thereto. It can be said that various implementations are possible by those skilled in the art within the technical spirit of the present invention.

Additionally, the specific scope of protection of the invention will be made clear by the appended claims.

[Explanation of symbols]

10,1000,2000: Electrolysis device

110,120,130,140: Separator plate

110a, 120a, 130a, 140a: one side

110b, 120b, 130b, 140b: If you ride

111,121: 1st Euro Department

112,122: 2nd Euro Department

111a,112a,121a,122a: embossed

111b, 112b, 121b, 122b: Engraved

113: First one-side distribution unit

113a,115a,123a,125a: embossed

113b, 115b, 123b, 125b: Engraved

114: First other side distribution unit

115,125,135,145: second one-side distribution unit

116,126,136,146: Second other side distribution unit

210: Membrane-electrode conjugate

211: first electrode

212: second electrode

213: electrode

214,2214: Separator

311: first gasket

312: second gasket

411: One side border gasket

412: Riding surface border gasket

1500,2500: Protective layer

1501,2501: first protective layer

1502,2502: first protective layer

A1,A2: Active area

B1,B2: Inactive area

L: longitudinal direction

W: Width direction

S: Stacking direction

P1: 1st euro

P2: Second Euro

V11: First one-side distribution furnace

V12: Second one-side distribution furnace

V21: First other distribution path

V22: Second other distribution path

Claims

Multiple separation plates; and

A membrane-electrode assembly positioned between the plurality of separators and including a plurality of electrodes and a separator positioned between the plurality of electrodes,

The separation plate is,

A flow path portion forming a first flow path and a second flow path through which fluid moves on one side and the other side, respectively;

One side distribution portion located on one side of the flow path portion in a plan view; and

In a plan view, it includes a distribution portion on the other side located on the other side of the flow path portion,

The one side distribution part and the other side distribution part form irregularities to form a distribution path communicating with the first flow path and the second flow path, and the unevenness of the one side distribution part and the other distribution part are formed in opposite shapes. Decomposition device.
In claim 1,

The separator plate and the membrane-electrode assembly are stacked alternately in the stacking direction,

The separator plate is rotated 180° around a rotation axis parallel to the stacking direction and is sequentially stacked.
In claim 2,

The uneven shape of the flow path portion is formed asymmetrically in the width direction of the separator plate,

An electrolysis device in which the uneven shapes of the separator plates located on the upper and lower sides with the membrane-electrode assembly in between correspond to each other.
In claim 1,

The euro section

a first flow path portion in which relief and engraving are alternately formed on one surface of the separator plate to form the first flow path; and

An electrolysis device comprising a second flow path portion in which engravings and embossings are alternately formed on the other surface of the separator plate to correspond to the embossings and intaglios formed in the first flow path portion to form the second flow path.
In claim 4,

The first flow path portion faces the electrode, and the first flow path through which the raw material fluid moves is open toward the electrode,

The second flow path portion faces the electrode, and the second flow path through which the raw material fluid moves is open toward the electrode.
In claim 4,

The relief of the first flow path formed in the active area on one side of the separator is formed in a protruding form with respect to the inactive area,

An electrolysis device in which the intaglio of the second flow path formed in the active area on the other side of the separator plate is formed in a concave shape with respect to the inactive area.
In claim 6,

An electrolysis device in which the thickness of the second electrode facing the other side of the separator plate is thicker than the thickness of the first electrode facing one side of the separator plate among the plurality of electrodes.
In claim 7,

The first electrode is an anode, and the second electrode is a cathode, or

An electrolysis device wherein the first electrode is a cathode and the second electrode is an anode.
In claim 7,

The thickness of the second electrode is

An electrolysis device formed to be equal to the sum of the protruding height of the relief of the first flow path portion formed on one surface of the separator plate and the thickness of the first electrode.
In claim 7,

a first gasket disposed in an inactive area on one side of the separator plate; and

Further comprising a second gasket disposed in an inactive area on the other side of the separator plate,

The first gasket is formed to be thicker than the first electrode in the stacking direction, and the second gasket is formed to have the same thickness as the second electrode in the stacking direction.
In claim 4,

The first flow path is formed in a concave portion of the first flow path portion,

The second flow path is formed in a concave portion of the second flow path portion,

Electrolysis devices located on the same line in the stacking direction.
In claim 4,

An electrolysis device in which embossed portions of the first flow path portion and the second flow path portion face each other across the membrane-electrode assembly and are in contact with a plurality of electrodes.
In claim 1,

The separator plate and the membrane-electrode assembly are alternately stacked,

An electrolysis device in which the separator plates are located on the uppermost and lowermost sides in the stacking direction.
In claim 6,

With the above distribution,

a first one-side distribution passage and a second one-side distribution passage formed on one side and the other side of the separation plate in the one-side distribution portion;

The other side distribution unit includes a first other side distribution path and a second other side distribution path formed on one side and the other side of the separator plate,

The first one-side distribution passage and the first other distribution passage are in communication with the first flow path, and the second one-side distribution passage and the second other distribution passage are in communication with the second flow path.
In claim 14,

The one-side distribution part includes a first one-side distribution part in which positive and negative engravings are alternately formed on one surface of the separator plate and forms the first one-side distribution path; and a second one-side distribution unit on the other surface of the separator plate, wherein engravings and embossings are alternately formed corresponding to the embossings and intaglios formed in the first one-side distribution part, and forming the second one-side distribution path, wherein the other side distribution part a first other side distribution portion having relief and engravings alternately formed on one surface of the separator plate and forming the first other side distribution path; And an electrolysis device comprising a second other side distribution unit formed on the other surface of the separator plate with engravings and embossings alternately corresponding to the embossings and intaglios formed in the first other distribution part and forming the second other distribution path.
In claim 15,

a first gasket disposed in an inactive area on one side of the separator plate; and

Further comprising a second gasket disposed in an inactive area on the other side of the separator plate,

In the membrane-electrode assembly, the electrode faces the flow path portion of the separator,

In the membrane-electrode assembly, the separator faces one side distribution part, the other side distribution part, the first gasket, and the second gasket of the separator plate.
In claim 16,

The relief formed in each of the first one-side distribution part and the second one-side distribution part is in contact with the separator of the membrane-electrode assembly.
In claim 16,

Further comprising a protective layer positioned between the separator of the membrane-electrode assembly, the first one side distribution part and the first other side distribution part of the separator,

The embossing of the first one-side distribution portion formed on the active area on one side of the separator is formed in a protruding form with respect to the inactive area,

The concave portion of the second one-side distribution portion formed in the active area on the other side of the separator plate is formed in a concave shape with respect to the inactive area,

The protruding height of the embossed angles formed in the first one-side distribution portion and the second one-side distributing portion, respectively, is the same as the protruding height of the embossed angles formed in the first flow portion and the second flow path portion, respectively.
In claim 18,

The protective layer extends between the first gasket and the second gasket.
In claim 19,

The thickness of the first gasket and the second gasket is the same as the protrusion height of the relief formed in the first flow path portion and the second flow path portion.
In claim 19,

In the plurality of electrodes, the thickness of the electrode facing one side of the separator plate is the same as the thickness of the electrode facing the other side of the separator plate,

The thickness of the electrode is the same as the thickness of the first gasket and the second gasket, and the same as the protrusion height of the relief formed in the first flow path portion and the second flow path portion.