Geometric structure of circular connector solid oxide electrolytic cell for improving electrolytic efficiency of synthesis gas and working method of geometric structure

Abstract

The invention relates to a geometric structure of a circular connector solid oxide electrolytic cell for improving the electrolytic efficiency of synthesis gas and a working method of the geometric structure, and is characterized in that the geometric structure of the circular connector solid oxide electrolytic cell for improving the electrolytic efficiency of synthesis gas comprises a first connector and a second connector which are oppositely arranged and are in a cover shape, the interlayer is located between the first connecting body and the second connecting body, a plurality of cylindrical connecting bodies are respectively arranged between the inner bottom surfaces of the first connecting body and the second connecting body and the interlayer in an array manner, and vertically crossed flow channels are formed among the cylindrical connecting bodies. The runner is reasonable in structural design, the transmission efficiency and the distribution uniformity of reaction gas are improved, and the working performance of the electrolytic cell is improved.

Description

Technical field: The invention relates to a circular connector solid oxide electrolysis cell geometric structure for improving synthesis gas electrolysis efficiency and a working method thereof. Background technology: The water electrolysis reaction in a solid oxide electrolyzer requires the introduction of H2O and CO2 at the cathode inlet for co-electrolysis. The flow channel of the electrolyzer is an important transmission channel for the reaction gas and reaction products, which directly affects the mass transfer efficiency and performance of the entire electrolyzer.

[0003] The flow channels of traditional solid oxide electrolyzers are all direct current channels, and the common forms are parallel direct current channels (such as Figure 1 As shown in (a), the parallel direct current channel is short, and H2O / CO2 does not have enough time to fully react to generate H2 / CO. The ribs of the parallel direct current channel are distributed more concentratedly, which is not conducive to the current distribution of co-electrolysis of H2O / CO2.

[0004] At present, a Chinese patent "Method for Making Solid Oxide Electrolyzer" with publication number CN101302631A has been retrieved. The corresponding metal oxide is deposited on a metal substrate, sintered, and naturally cooled to serve as a cathode or the metal is directly used as the cathode; the solid oxide electrolyte powder is formed into a blank by a tape casting method, sintered in an oxidizing atmosphere, and naturally cooled to obtain a dense solid electrolyte film, and then the anode activation layer and the anode contact layer are deposited and sintered to form a semi-electrolyzer; the cathode and the solid oxide electrolyte in the semi-electrolyzer are closely contacted to form a solid oxide electrolyzer. Although the patent avoids the loss of electrolyte and the possible corrosion problems, it does not disclose how to improve the flow channel structure of the electrolyzer to improve the transmission efficiency and distribution uniformity of the reaction gas and improve the working performance of the electrolyzer.

[0005] At present, the Chinese patent "A 3D flow field plate for a fuel cell" with publication number CN220272517U has been retrieved, which includes a flow field plate, a flow field is provided in the middle of the flow field plate, the flow field is used to provide a flow place for reactants and products, and to a certain extent determines the ability of internal mass transfer in the fuel cell, affects the electrochemical reaction rate, and further affects the electrochemical performance of the battery, and the flow field plate is provided with a guide mechanism in the flow field, the guide mechanism is used for gas flow guidance, the guide mechanism includes a plurality of ridges, the ridges include two curved plates, the curved plates are used to separate the flow field into a plurality of secondary flow channels, the secondary flow channels play a role in transmitting gas, and play an important role in the internal mass transfer of the fuel cell, although the patent enhances the convective mass transfer through the multi-directional turbulence effect of the 3D opposed sinusoidal wave structure, forms a periodically changing pressure distribution in the flow channel, increases the pressure gradient between the flow channel and the gas diffusion layer and the concentration gradient of the reaction gas, promotes the reaction gas to diffuse to the electrode surface, and accelerates the electrochemical reaction; but it does not disclose how to improve the flow channel structure of the electrolyzer to improve the transmission efficiency and distribution uniformity of the reaction gas and improve the working performance of the electrolyzer. Summary of the invention: In view of the above-mentioned problems, the purpose of the present invention is to propose a circular connector solid oxide electrolyzer geometric structure for improving the efficiency of synthesis gas electrolysis. The flow channel structure is reasonably designed, which is conducive to improving the transmission efficiency and distribution uniformity of the reaction gas and improving the working performance of the electrolyzer.

[0007] The present invention is implemented by the following scheme: The geometric structure of the circular connector solid oxide electrolyzer for improving the efficiency of synthesis gas electrolysis of the present invention is characterized by comprising a first connector and a second connector in the shape of a cover which are arranged opposite to each other, and a partition layer located between the first connector and the second connector, and a plurality of cylindrical connectors are arranged in an array between the inner bottom surfaces of the first connector and the second connector and the partition layer, respectively, to form vertically intersecting flow channels between the cylindrical connectors.

[0008] Preferably, 1-72 cylindrical connectors are arranged in the first connector and the second connector, and the diameter of the cylindrical connector is 4 mm.

[0009] Preferably, the first connector and the second connector are made of stainless steel.

[0010] Preferably, the separator comprises in sequence a cathode support layer, a cathode functional layer, an electrolyte layer, an anode functional layer and an anode current collecting layer.

[0011] Preferably, a fuel electrode flow channel is formed between the first connector and the spacer for passing H2O / CO2, an air electrode flow channel is formed between the second connector and the spacer for passing air, and a voltage of 1.4 V is loaded between the first connector and the second connector.

[0012] The working method of the circular connector solid oxide electrolyzer geometric structure for improving the efficiency of synthesis gas electrolysis of the present invention is characterized in that: the circular connector solid oxide electrolyzer geometric structure for improving the efficiency of synthesis gas electrolysis includes a first connector and a second connector in a hood shape that are relatively arranged, and a partition located between the first connector and the second connector, a plurality of cylindrical connectors are arrayed between the inner bottom surfaces of the first connector and the second connector and the partition, respectively, to form vertically intersecting flow channels between the cylindrical connectors; one end between the first connector and the second connector and the partition serves as an air inlet, and the other end serves as an air outlet, H2O and CO2 are introduced into the air inlet between the first connector and the partition, and air is introduced into the air inlet between the second connector and the partition, and H2 and CO are output at the air outlet after electrolysis.

[0013] The present invention has a simple structure, is easy to process and has a low cost. The present invention establishes a single cell model to carry out H2O / CO2 co-electrolysis simulation research, and uses COMSOL Multiphysics simulation software to carry out multi-physics field coupling modeling. As a result, it is found that the geometric structure of the solid oxide electrolyzer of the present invention enhances the gas transmission performance inside the electrolyzer and improves the uniformity of gas distribution, so that the H2 production efficiency of the circular connector solid oxide electrolyzer is about 59.6% higher than that of the traditional direct current channel; the CO production efficiency is about 87.29% higher than that of the traditional direct current channel; the maximum value of the circular connector electrolyte current density is about 11A / m2 higher than that of the traditional direct current channel, and the maximum value of the PEN temperature is about 0.5 K higher than that of the traditional direct current channel.

[0014] The invention has a simple structure, is easy to process and has a low cost. The invention is an improvement on the original traditional parallel direct flow channel structure, and realizes the coordinated work of the main flow channel (from the air inlet to the air outlet) and the branch flow channel (perpendicular to the air inlet to the air outlet). The main flow channel and the branch flow channel are vertically crossed, and the cross-sectional shape of the connector between the cross-flow flow channels is circular, so it is named a circular connector. The total inlet and outlet cross-sectional area of ​​the circular connector electrolytic cell of the invention is equal to the total inlet and outlet cross-sectional area of ​​the traditional direct flow channel, which is more conducive to comparing the impact of the change in the flow channel form on the performance of the electrolytic cell; the circular connector creates twists and diversions in the original direct flow channel, thereby enhancing gas flow and diffusion; the elliptical connector in the middle part of the circular connector of the invention plays the role of dispersing the current, so that the current density of electrolysis H2O / CO2 is more evenly distributed, the effective reaction area of ​​the electrode is increased and the mass transfer efficiency is improved; because the total length of the flow channel of the invention is longer than that of the traditional direct flow channel, water vapor and carbon dioxide have more time to participate in the electrochemical reaction in the flow channel, so it has a more efficient synthesis gas production efficiency and significant economy.

[0015] The present invention is further described below in conjunction with the accompanying drawings; Description of the drawings: Figure 1 It is a schematic diagram of the simulation domain of a conventional straight channel and a circular connector solid oxide electrolyzer; Figure 2 It is a two-dimensional plan view of the flow channel shape of a conventional straight flow channel and a circular connector solid oxide electrolyzer; Figure 3 It is the principle diagram of electrolytic reaction in electrolytic cell; Figure 4 It is a schematic diagram comparing the H2 mass concentration of a conventional direct-flow solid oxide electrolyzer and a circular connector; Figure 5 It is a schematic diagram of the surface integral comparison of H2 mass concentration at the cathode inlet (z=0 mm) and outlet (z=40 mm) of a conventional direct-flow solid oxide electrolyzer and a circular connector; Figure 6 This is a schematic diagram comparing the CO mass concentration of a conventional direct-flow solid oxide electrolyzer and a circular connector; Figure 7 It is a schematic diagram of the surface integral comparison of CO mass concentration at the cathode inlet (z=0 mm) and outlet (z=40 mm) of a conventional direct-flow solid oxide electrolyzer and a circular connector; Figure 8 This is a schematic diagram comparing the CH4 mass concentration of a conventional direct-flow solid oxide electrolyzer and a circular connector; Fig. 9 It is a schematic diagram comparing the O2 mass concentration of a conventional direct-flow solid oxide electrolyzer and a circular connector anode; Fig.10 It is a schematic diagram comparing the reaction rates of the conventional flow channel and the circular connector solid oxide electrolyzer WGSR (water gas shift reaction) of the present invention; Fig.11 It is a schematic diagram comparing the reaction rates of DIR (internal reforming reaction) of a solid oxide electrolyzer of a conventional flow channel and a circular connector of the present invention; Fig.12 It is a schematic diagram of the temperature comparison between the conventional flow channel and the circular connector solid oxide electrolyzer PEN (positive electrode-electrolyte-negative electrode) of the present invention; Fig.13 It is a schematic diagram comparing the temperature distribution of the middle section of the electrolyte (x=20 mm, y=-0.4175 mm) along the flow direction of the conventional flow channel and the circular connector solid oxide electrolytic cell of the present invention; Fig.14 Schematic diagram comparing the electrolyte current density distribution along the flow direction of the conventional flow channel and the circular connector solid oxide electrolytic cell of the present invention; Fig.15 is a cross-sectional schematic diagram of the flow channel of the present invention; Fig.16is a front view of the first connector or the second connector; Fig.17 It is a three-dimensional diagram of a square connector of a comparative example; Fig.18 It is the front view of the flow channel of the square connector of the comparative example; Fig.19 It is a three-dimensional diagram of a comparative triangle connector; Fig. 20 It is the front view of the flow channel of the triangle connector of the comparative example; (a) in the previous figures is a conventional flow channel, and (b) is a flow channel of the present invention. Specific implementation method: The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] The circular connector solid oxide electrolyzer geometric structure for improving the efficiency of synthesis gas electrolysis of the present invention includes a first connector A1 and a second connector A2 in the shape of a cover arranged oppositely. The first connector and the second connector can be made of materials such as stainless steel.

[0018] An interlayer A3 is provided between the cover openings of the first connector and the second connector, and the interlayer comprises a cathode support layer, a cathode functional layer, an electrolyte layer, an anode functional layer and an anode current collecting layer in sequence.

[0019] A plurality of cylindrical connectors A4 are arranged in an array between the inner bottom surfaces of the first connector A1 and the second connector A2 and the partition layer A3, respectively, to form vertically intersecting flow channels between the cylindrical connectors.

[0020] 1-72 cylindrical connectors can be arranged in the first connector and the second connector, and the diameter of the cylindrical connector is 4 mm; the circular connectors in adjacent rows can be arranged at the same position, or the circular connectors in adjacent rows can be staggered.

[0021] Specifically, a fuel electrode flow channel is formed between the first connector and the spacer for passing H2O / CO2, an air electrode flow channel is formed between the second connector and the spacer for passing air, and a voltage of 1.4 V is loaded between the first connector and the second connector.

[0022] The present invention is an improvement on the parallel direct flow channel structure of a conventional solid oxide electrolyzer. By setting a diversion method in the flow channel, the gas reaction time is increased. The dispersed connector can make the current density distribution more uniform, thereby promoting the electrolytic H2O / CO2 reaction. The present invention can improve the efficiency of producing synthesis gas in solid oxide fuel cells.

[0023] like Figure 2As shown, the circular connector solid oxide electrolyzer of the present invention has three excellent properties compared with the traditional parallel direct current channel: (1) the efficiency of producing H2 by electrolysis of H2O is improved, and the hydrogen production efficiency of the circular connector electrolyzer is 59.6% higher than that of the traditional electrolyzer; (2) the efficiency of producing CO by electrolysis of CO2 is improved, and the hydrogen production efficiency of the circular connector electrolyzer is 87.29% higher than that of the traditional electrolyzer; (3) the electrolyte current density of the circular connector is more uniform than that of the traditional direct current channel electrolyzer, and the maximum value of the electrolyte current density of the circular connector is about 11 A / m higher than that of the traditional direct current channel 2 , and the electrolyte current density of the new structure is more uniform.

[0024] The circular connector design is mainly suitable for solid oxide electrolyzers, and is also applicable to low-temperature proton exchange membrane fuel cells and electrolyzers, high-temperature solid oxide cells and other fuel cells with any flow channel form. The length range of the fuel cell flow channel applicable to the present invention from the inlet to the outlet is 1-1000mm; the flow channel diameter range is 0.1-1.5mm, the diameter of the cylindrical connector is 4mm; the number of circular connectors in the flow channel is 1-72.

[0025] The circular connector is mainly suitable for high-temperature solid oxide electrolyzers, and is also suitable for high-temperature and low-temperature fuel cells (solid oxide fuel cells and proton exchange membrane fuel cells) and electrolyzers.

[0026] The battery flow channel can adopt 72 or more circular connectors in the structural arrangement, the circular area can be larger or smaller, and multiple circular connectors increase the gas transmission path, so that the battery performance is improved more significantly and more evenly.

[0027] The present invention is described in detail below in conjunction with specific simulation results: Comparison of existing simulation results: Traditional parallel straight flow channel, flow channel length 40 mm, flow channel height 1 mm, flow channel width 2 mm, circular connector electrolytic cell geometric parameters are shown in Table 1; electrolytic cell simulation boundary conditions are: the electrolytic cell is tested at T = 1073 K temperature, working pressure 1atm, cathode inlet (20% H2, 40% H2O, 40% CO2) volume flow rate Vca = 100 sccm (standard cubic centimeter per minute, sccm), anode inlet (21% O2, 79% N2) volume flow rate Van = 20 sccm; electrolysis voltage 1.4 V; the circular connector of the present invention uses the same working conditions for simulation experiments.

[0028] like Figure 3 Shown is the schematic diagram of the electrolytic reaction in the electrolytic cell.

[0029] like Figure 4 As shown in Figure 2, the H2 mass concentration in the electrode and channel gradually increases along the fuel flow direction (-z direction), and the maximum H2 mass concentration at the cathode outlet of the traditional flow channel is 7.8×10-3 kg / m 3 The maximum H2 mass concentration at the outlet of the circular connector is 10×10-3 kg / m 3 .

[0030] Figure 5 The mass concentration distribution diagram of the two cross sections of the inlet and outlet of the traditional flow channel and the circular connector electrolyzer, where each cross section is the surface integral of the mass concentration of H2 in kg / m 3 ; When x = 0 mm, hydrogen has just entered the SOEC. In order to maintain the reducing atmosphere at the cathode, 20% H2 is introduced in advance; the mass concentration of hydrogen at the cathode inlet of the conventional flow channel and the circular connector electrolyzer is 2.6608×10-7 kg / m 3 , 2.708×10-7 kg / m 3 ; The H2 mass concentration at the cathode outlet of the traditional flow channel and the circular connector electrolyzer is 4.1526×10-7 kg / m 3 , 5.089×10-7 kg / m 3 ; It can be seen that at the cathode inlet volume flow rate Vca=100 sccm, the H2 production efficiency of the circular interconnect SOEC is 59.6% higher than that of the traditional flow channel.

[0031] like Figure 6 As shown in Figure 2, the CO mass concentration in the electrode and channel gradually increases along the fuel flow direction (-z direction), and the maximum CO mass concentration at the cathode outlet of the traditional flow channel is 0.0489 kg / m 3 The maximum CO mass concentration at the outlet of the circular connector is 0.0930 kg / m 3 .

[0032] Figure 7 The mass concentration distribution diagram of the inlet and outlet of the traditional flow channel and circular connector electrolyzer, where each section is the surface integral of the mass concentration of CO in kg / m 3 The CO mass concentration at the cathode inlet of the conventional flow channel and circular connector electrolyzer is 1.0734×10-7 kg / m 3 , 1.696×10-7 kg / m 3 The CO mass concentration at the cathode outlet of the conventional flow channel and circular connector electrolyzer is 22.035×10-7 kg / m 3 ,40.955×10 -7 kg / m 3; It can be seen that at the cathode inlet volume flow rate of Vca=100 sccm, the CO production efficiency of the circular interconnected SOEC is 87.29% higher than that of the traditional flow channel.

[0033] Under the DIR chemical reaction, CO and H2 react in reverse to form CH4 and H2O; Figure 8 The CH4 mass concentration distribution of the cathode of the conventional flow channel and circular interconnect SOEC cell under the downstream arrangement at a voltage of 1.4 V; under the DIR reaction, the CH4 content is very small. However, it can still be seen that the CH4 content of the circular interconnect SOEC under the cathode outlet rib is higher than that of the conventional flow channel.

[0034] Fig. 9 The O2 mass concentration distribution at the anode of SOEC under the downstream condition. The maximum O2 mass concentration of the traditional flow channel is below the rib, and the maximum oxygen mass concentration is 0.236 kg / m 3 The maximum oxygen mass concentration of the circular SOEC is 0.338 kg / m 3 , the higher O2 mass concentration proves that the electrochemical reaction of the circular connector is more intense.

[0035] Fig.10 The reaction rate distribution of the conventional flow channel and circular connector electrolyzer WGSR, where positive values ​​represent the forward reaction and negative values ​​represent the reverse reaction (i.e. CO2 and H2 react to produce CO and H2O). It can be seen that the reaction rates of the two electrolyzers WGSR (WGSR reaction: ) are inversely distributed, with the unit of mol / (m 3 ·s), at the cathode inlet, the reverse WGSR reaction rate is the highest, because there are a large amount of CO2 and H2 at the cathode inlet, and the reactants are sufficient, which will cause the electrolyzer to undergo a reverse WGSR reaction. Because the same initial gas components are introduced into the two electrolyzers at the cathode inlet, the WGSR reverse reaction rates at the cathode inlet are almost the same; as the reaction gas goes deeper along the flow channel (-z direction), the WGSR reverse reaction rate gradually decreases; because although the H2 content gradually increases, the CO2 content gradually decreases, the reduction in reactants will reduce the reverse WGSR reaction rate; the circular connector electrolyzer consumes a large amount of CO2, so its reverse WGSR reaction rate is greatly reduced at the outlet.

[0036] Fig.11 The DIR reaction rate of the electrolyzer with traditional flow channel and circular connector (DIR reaction: ) distribution, negative values ​​represent the reverse reaction, because CH4 is not introduced at the cathode inlet, so the DIR reaction in this model is reverse; compared with the WGSR reaction rate, the DIR reaction rate is much smaller. It can be seen that the DIR reverse reaction rate is the smallest at the cathode inlet of the two electrolyzers, almost 0, because there is no CH4 as a reactant at the cathode inlet for the DIR forward reaction. As the reaction gas goes deeper along the flow channel (-z direction), the DIR reverse reaction rate gradually increases; the DIR reverse reaction rate of the circular connector electrolyzer is higher than that of the traditional flow channel, so the CH4 content of the circular connector is higher.

[0037] Fig.12 The temperature distribution of the traditional flow channel and circular connector electrolytic cell PEN under the downstream arrangement state of 1.4 V voltage. It can be seen that the overall temperature of the circular connector PEN is higher, and its maximum temperature is 1108 K, which is about 0.5 K higher than the maximum temperature of the traditional flow channel.

[0038] Fig.13 The temperature distribution of the electrolyte middle section (x=20 mm, y=-0.4175 mm) along the flow direction of the traditional flow channel and the circular connector electrolyzer under the downstream arrangement state of 1.4 V voltage. It can be seen that the overall temperature of the circular connector PEN is higher than that of the traditional flow channel. The higher working stability is conducive to improving the electrolyte ion conductivity, thereby accelerating the electrochemical reaction rate.

[0039] Fig.14 The electrolyte current density distribution of the conventional flow channel and circular connector electrolyzer under the 1.4 V voltage downstream arrangement. The electrolyte current density of the conventional direct flow channel varies from 3847 to 4663 A / m 2 The electrolyte current density of the circular connector varies from 3687 to 4674 A / m2; the maximum current density of the circular connector is 11 A / m higher than that of the traditional flow channel. 2 , higher current density corresponds to higher electrolysis efficiency, and the electrolyte current density of the circular connector is more uniform. Only the local circular low current density between the circular connectors, the electrolyte current density in other areas is higher than that of the traditional flow channel. This is also the advantage of this design.

[0040] Table 1 Geometric parameters of solid oxide electrolyzer model

[0041] Table 2 Performance comparison of connectors with different cross-sectional shapes

[0042] Table 3 Effect of circular column connector diameter on SOEC performance

[0043] In the above table 2, through the comparison of traditional flow channels, square connector flow channels, circular connector flow channels and triangular connector flow channels, it is proved that the circular connector flow channel has higher hydrogen production efficiency. Table 3 shows that the performance is better and the hydrogen production is larger when the side length is 4 mm.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A circular connector solid oxide electrolyzer geometry structure for improving synthesis gas electrolysis efficiency, characterized in that: It includes a first connector and a second connector in the shape of a cover which are arranged opposite to each other, and a partition layer located between the first connector and the second connector. A plurality of cylindrical connectors are arranged in an array between the inner bottom surfaces of the first connector and the second connector and the partition layer, respectively, to form vertically intersecting flow channels between the cylindrical connectors.

2. The circular connector solid oxide electrolyzer geometric structure for improving the efficiency of syngas electrolysis according to claim 1, characterized in that: 1-72 cylindrical connectors are arranged in the first connector and the second connector, and the diameter of the cylindrical connector is 4 mm.

3. The circular connector solid oxide electrolyzer geometric structure for improving the efficiency of syngas electrolysis according to claim 1 or 2, characterized in that: The first connecting body and the second connecting body are made of stainless steel.

4. The circular connector solid oxide electrolyzer geometric structure for improving the efficiency of syngas electrolysis according to claim 3, characterized in that: The separator includes a cathode support layer, a cathode functional layer, an electrolyte layer, an anode functional layer and an anode current collecting layer in sequence.

5. The circular connector solid oxide electrolyzer geometric structure for improving the efficiency of syngas electrolysis according to claim 4, characterized in that: A fuel electrode flow channel is formed between the first connector and the spacer for passing H2O / CO2, an air electrode flow channel is formed between the second connector and the spacer for passing air, and a voltage of 1.4 V is loaded between the first connector and the second connector.

6. The circular interconnector solid oxide electrolyzer geometry structure for improving synthesis gas electrolysis efficiency according to claim 1, 2, 3, 4 or 5, characterized in that: The flow channel length is 40 mm, the flow channel height is 1 mm, the electrolyzer operates at a temperature of T=1073 K and a working pressure of 1 atm, the volume flow rate of the cathode inlet (20% H2, 40% H2O, 40% CO2) is Vca=100 sccm, and the volume flow rate of the anode inlet (21% O2, 79% N2) is Van=20 sccm;.

7. A method for operating a circular interconnector solid oxide electrolyzer geometric structure for improving the efficiency of synthesis gas electrolysis according to any one of claims 1 to 6, characterized in that: The geometric structure of the circular connector solid oxide electrolyzer for improving the efficiency of synthesis gas electrolysis includes a first connector and a second connector in a cover shape that are relatively arranged, and a partition located between the first connector and the second connector. A plurality of cylindrical connectors are arrayed between the inner bottom surfaces of the first connector and the second connector and the partition, respectively, to form vertically intersecting flow channels between the cylindrical connectors; one end between the first connector and the second connector and the partition serves as an air inlet, and the other end serves as an air outlet. H2O and CO2 are introduced into the air inlet between the first connector and the partition, and air is introduced into the air inlet between the second connector and the partition. After electrolysis, H2 and CO are output at the air outlet.

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