Indirect internal reforming solid oxide fuel cell interconnect

Abstract

This invention discloses an indirect internal reforming solid oxide fuel cell connector, belonging to the field of fuel cell technology. The connector includes an anode plate, a reforming plate, and a cathode plate connected sequentially, all three plates being integrally formed. The reforming plate has a porous region for hydrocarbon fuel flow and for the reforming reaction to occur; the porosity gradient of the porous region decreases along the direction of hydrocarbon fuel flow. The cathode plate, anode plate, and reforming plate each have through holes for the flow of at least one of hydrocarbon fuel, reforming gas, and oxidizing gas; the through holes for hydrocarbon fuel flow are connected to the porous region. The anode plate and cathode plate, on the side away from the reforming plate, respectively have a first flow channel for the flow of reforming gas and a second flow channel for the flow of oxidizing gas. This connector avoids the damage to the battery structure and the deterioration of battery performance caused by excessive local thermal stress due to direct internal reforming, as well as anode carbon buildup.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and more specifically, to an indirect internal reforming solid oxide fuel cell connector. Background Technology

[0002] Solid oxide fuel cells (OFCs) are all-solid-state reaction devices that directly convert the chemical energy of fuel into electrical energy. They offer the advantage of flexible fuel use, employing hydrogen and hydrocarbon fuels such as methane, syngas, and ethanol. Because they are not limited by the Carnot cycle, their energy conversion efficiency can reach over 85%, and their power density, specific power, and specific energy are all higher than other types of power generation systems. Therefore, they can serve as mobile power sources for vehicles and ships, small-scale residential combined heat and power (CHP) systems, medium-sized distributed power generation, and large-scale centralized power plants, finding wide application in transportation, power, CHP, spaceflight, and many other fields.

[0003] The connector is one of the key core components of an SOFC (Solar-Fiber Integrated Reactor) stack, and its performance directly affects the system's degradation and stability. Besides connecting individual cells in series for electrical connection, the connector must also separate fuel and oxidizing gases and provide mechanical support for the cells. In harsh high-temperature, high-oxidation, and high-reduction operating environments, the connector's coefficient of thermal expansion must match that of other battery components; and it must possess: high electronic conductivity and low ionic conductivity; strong oxidation-reduction resistance in its composition and microstructure; good airtightness and high mechanical strength; and no reaction or interdiffusion with electrode materials.

[0004] When hydrocarbons are used as fuel in SOFCs, the fuel typically needs to be reformed to obtain syngas, a mixture of CO and H2, which then enters the porous electrode to undergo an electrochemical reaction. From the perspective of the reforming location, fuel reforming can be divided into external reforming and internal reforming. External reforming involves first generating syngas from the hydrocarbon fuel and then introducing it into the SOFC stack. This reforming method increases the system's volume and complexity, thus increasing costs. Internal reforming involves adding a suitable amount of water vapor to the hydrocarbon fuel, utilizing the high-temperature operating environment of the SOFC to achieve internal reforming of the fuel. While this can reduce the complexity and cost of external reforming equipment, internal fuel reforming, occurring within the battery, is a very fast, strongly endothermic chemical reaction that requires the absorption of a large amount of heat, resulting in a significant temperature gradient within the battery. The resulting thermal stress can easily damage the battery structure and lead to performance degradation. Furthermore, when hydrocarbons are chosen as fuel, their internal reforming at the high-temperature anode is prone to cracking, forming carbon deposits that cover the surface of the anode active sites, which also significantly reduces battery performance. Furthermore, when the stack is preheated and started up by directly heating the fuel and oxidizing gas, or when the stack is cooled by increasing the flow rate of oxidizing gas, these methods allow the gas flow medium to directly contact the functional layer of the battery electrodes. This increases the temperature gradient in local areas of the battery, causing interface separation of heterogeneous components inside the battery, thereby damaging the battery structure.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an indirect internal reforming solid oxide fuel cell connector, which can avoid the damage to the battery structure and the deterioration of battery performance caused by excessive local thermal stress due to direct internal reforming.

[0007] This application can be implemented as follows:

[0008] This application provides an indirect internal reforming solid oxide fuel cell connector, including an anode plate for connecting to an anode and a cathode plate for connecting to a cathode, which are disposed opposite to each other, and a reforming plate located between the anode plate and the cathode plate. The anode plate, the reforming plate and the cathode plate are connected in sequence and integrally formed.

[0009] The reformer plate has a porous region for hydrocarbon fuel flow and for the reforming reaction to occur; the porosity gradient of the porous region decreases along the direction of hydrocarbon fuel flow.

[0010] The cathode plate, anode plate, and reforming plate are each provided with through holes for the flow of at least one of hydrocarbon fuel, reforming gas, and oxidizing gas, wherein the through holes for the flow of hydrocarbon fuel are connected to the porous region.

[0011] The anode plate has a first flow channel for the flow of recombination gas on the side away from the reforming plate, and the first flow channel is connected to the through hole for the flow of the corresponding recombination gas; the cathode plate has a second flow channel for the flow of oxidizing gas on the side away from the reforming plate, and the second flow channel is connected to the through hole for the flow of the corresponding oxidizing gas.

[0012] In an optional implementation, the porosity is 50-90%.

[0013] In an optional implementation, the pore size of each pore in the porous region is 50-1000 μm.

[0014] In an optional embodiment, the porous region includes at least two sub-porous regions along a direction perpendicular to the flow of hydrocarbon fuel, with adjacent sub-porous regions separated by solid ribs.

[0015] In an optional implementation, the porous region is a region with a polyhedral lattice unit structure.

[0016] In an optional embodiment, all surfaces involved in the porous region are provided with a catalyst for the reforming reaction of hydrocarbon fuels.

[0017] In an optional embodiment, a first groove is provided on the side surface of the anode plate away from the reforming plate, and a first flow channel is disposed in the first groove, the extension direction of the first flow channel being the flow direction of the reforming gas material.

[0018] A second groove is provided on the side of the cathode plate away from the reforming plate, and a second flow channel is provided in the second groove. The extension direction of the second flow channel is the flow direction of the oxidizing gas material.

[0019] In an optional embodiment, the indirect internal reforming solid oxide fuel cell connector further includes a gas distribution section for connecting gaseous materials and corresponding flow channels.

[0020] In an optional embodiment, the through-hole includes a recombination gas through-hole for the flow of recombination gas and an oxidation gas through-hole for the flow of oxidation gas.

[0021] The recombination gas passage includes a recombination gas inlet and a recombination gas outlet, and the oxidation gas passage includes an oxidation gas inlet and an oxidation gas outlet.

[0022] One end of the first flow channel is connected to the recombination gas inlet via a gas distribution section, and the other end is connected to the recombination gas outlet; correspondingly, one end of the second flow channel is connected to the oxidation gas inlet via a gas distribution section, and the other end is connected to the oxidation gas outlet.

[0023] In an optional embodiment, the through-hole further includes a hydrocarbon fuel through-hole for supplying hydrocarbon fuel, the hydrocarbon fuel through-hole including a hydrocarbon fuel inlet and a hydrocarbon fuel outlet disposed opposite to each other, and the number of hydrocarbon fuel inlets and hydrocarbon fuel outlets being equal; both hydrocarbon fuel inlets and hydrocarbon fuel outlets are connected to the porous region.

[0024] The beneficial effects of this application include:

[0025] This application provides a reforming plate between an anode plate and a cathode plate. The reforming plate has a porous region for hydrocarbon fuel flow and for the reforming reaction to occur. The porosity gradient of this porous region decreases along the direction of hydrocarbon fuel flow.

[0026] The internal reforming method described above avoids the drawbacks of external reforming, such as large system size, complexity, and high cost. Furthermore, the solid oxide fuel cell connector provided in this application, by setting the porosity of the porous region to a gradient reduction mode, helps avoid large temperature gradients within the cell during the reforming process, reducing thermal stress and preventing structural damage. In addition, this solid oxide fuel cell connector not only prevents carbon deposits from forming on the anode active site surface, thus avoiding a significant decrease in cell performance, but also prevents structural damage such as separation at heterogeneous interfaces within the cell. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the anode plate in the indirect internal reforming solid oxide fuel cell connector provided in this application;

[0029] Figure 2 A schematic diagram of the reforming plate in the indirect internal reforming solid oxide fuel cell connector provided in this application;

[0030] Figure 3 for Figure 2 Enlarged view of the porous region;

[0031] Figure 4 This is a schematic diagram of the cathode plate in the indirect internal reforming solid oxide fuel cell connector provided in this application.

[0032] Icons: 10-Anode plate; 11-First groove; 12-First flow channel; 20-Reforming plate; 30-Cathode plate; 31-Porous region; 32-Sub-porous region; 35-Solid rib; 36-Polyhedral lattice unit structure; 411-Reforming gas inlet; 412-Reforming gas outlet; 421-Oxidation gas inlet; 422-Oxidation gas outlet; 431-Hydrocarbon fuel inlet; 432-Hydrocarbon fuel outlet; 50-Gas distribution section; 51-First side surface; 52-Second side surface; 53-Third side surface; 54-Fourth side surface. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0037] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0039] Example

[0040] Please refer to Figures 1 to 4This application proposes an indirect internal reforming solid oxide fuel cell connector, which includes an anode plate 10 for connection to the anode and a cathode plate 30 for connection to the cathode, which are disposed opposite to each other, and a reforming plate 20 located between the anode plate 10 and the cathode plate 30.

[0041] The anode plate 10, the reforming plate 20 and the cathode plate 30 are connected in sequence and integrally formed to form a self-sealing dense area (which can also be understood as a solid area).

[0042] For reference, the dimensions and sizes of the anode plate 10, the reforming plate 20, and the cathode plate 30 are consistent, while their shapes can be set according to actual needs. More specifically, the positions and sizes of the through holes provided in the anode plate 10, the reforming plate 20, and the cathode plate 30 are all consistent.

[0043] The cathode plate 30, anode plate 10, and reforming plate 20 are each provided with through holes for the flow of at least one of hydrocarbon fuel, reforming gas, and oxidizing gas. That is, depending on actual needs, only through holes for the flow of hydrocarbon fuel (hereinafter referred to as "hydrocarbon fuel through holes"), through holes for the flow of reforming gas (hereinafter referred to as "reforming gas through holes"), or through holes for the flow of oxidizing gas (hereinafter referred to as "oxidizing gas through holes") may be provided; or through holes for the flow of hydrocarbon fuel and through holes for the flow of reforming gas may be provided simultaneously, or through holes for the flow of hydrocarbon fuel and through holes for the flow of oxidizing gas may be provided simultaneously, or through holes for the flow of reforming gas and through holes for the flow of oxidizing gas may be provided simultaneously, or through holes for the flow of hydrocarbon fuel, through holes for the flow of reforming gas, and through holes for the flow of oxidizing gas may be provided simultaneously.

[0044] Specifically, the recombination gas through-hole includes a recombination gas inlet 411 and a recombination gas outlet 412, the oxidation gas through-hole includes an oxidation gas inlet 421 and an oxidation gas outlet 422, and the hydrocarbon fuel through-hole includes a hydrocarbon fuel inlet 431 and a hydrocarbon fuel outlet 432 arranged opposite to each other. Both the hydrocarbon fuel inlet 431 and the hydrocarbon fuel outlet 432 are connected to the porous region 31.

[0045] Furthermore, the anode plate 10 has a first flow channel 12 for the flow of recombination gas on the side away from the reforming plate 20, and the first flow channel 12 is connected to the through hole for the flow of the corresponding gaseous material. The cathode plate 30 has a second flow channel (not shown) for the flow of oxidizing gas on the side away from the reforming plate 20, and the second flow channel is connected to the through hole for the flow of the corresponding gaseous material.

[0046] Specifically, the anode plate 10 has a downward-facing first groove 11 on the side (upper surface) away from the reforming plate 20. The upper surface of the anode plate 10 is used to connect with an external anode, and the lower surface of the anode plate 10 is used to connect with the reforming plate 20. A first flow channel 12 is disposed in the first groove 11, and the extension direction of the first flow channel 12 is the flow direction of the gaseous material (reformed gas).

[0047] Similarly, the cathode plate 30 has an upward-facing second groove (not shown) on the side surface (lower surface) away from the reforming plate 20. The lower surface of the cathode plate 30 is used to connect with an external cathode, while the upper surface of the cathode plate 30 is used to connect with the reforming plate 20. A second flow channel is provided in the aforementioned second groove, and the extension direction of the second flow channel is the flow direction of the gaseous material (oxidizing gas).

[0048] The following is a specific implementation method:

[0049] Taking the anode plate 10, the reforming plate 20 and the cathode plate 30 as examples, all of which are quadrilateral (such as rectangular), the above three plates are respectively connected end to end with a first side 51, a second side 52, a third side 53 and a fourth side 54, wherein the first side 51 and the third side 53 are arranged opposite each other, and the second side 52 and the fourth side 54 are arranged opposite each other.

[0050] The recombination gas inlet 411 is at least located on the anode plate 10 near the first side 51 and penetrates the upper and lower surfaces of the plate. The recombination gas outlet 412 is at least located on the anode plate 10 near the third side 53 and penetrates the upper and lower surfaces of the plate.

[0051] The oxidizing gas inlet 421 is located at least near the third side 53 of the cathode plate 30 and penetrates the upper and lower surfaces of the plate. The oxidizing gas outlet 422 is located at least near the first side 51 of the cathode plate 30 and penetrates the upper and lower surfaces of the plate.

[0052] The hydrocarbon fuel inlet 431 is located at least near the second side 52 of the reforming plate 20 and penetrates the upper and lower surfaces of the plate. The hydrocarbon fuel outlet 432 is located at least near the fourth side 54 of the reforming plate 20 and penetrates the upper and lower surfaces of the plate.

[0053] In some embodiments, each plate (anode plate 10, reforming plate 20 and cathode plate 30) is provided with a reforming gas inlet 411, a reforming gas outlet 412, an oxidation gas inlet 421, an oxidation gas outlet 422, a hydrocarbon fuel inlet 431 and a hydrocarbon fuel outlet 432 at a corresponding position.

[0054] For example, the number of recombination gas inlets 411 and oxidation gas inlets 421 can both be two, and the number of recombination gas outlets 412 and oxidation gas outlets 422 can both be one. The positional relationship between the two recombination gas inlets 411 located near the first side 51 of the anode plate 10 and the one recombination gas outlet 412 located near the third side 53 of the anode plate 10 can be such that the projection of the recombination gas outlet 412 onto the first side 51 of the anode plate 10 is located in the middle of the two recombination gas inlets 411. Similarly, the positional relationship between the two oxidation gas inlets 421 located near the third side 53 of the cathode plate 30 and the one oxidation gas outlet 422 located near the first side 51 of the cathode plate 30 can be such that the projection of the oxidation gas outlet 422 onto the third side 53 of the cathode plate 30 is located in the middle of the two oxidation gas inlets 421.

[0055] In other embodiments, the number and positional relationship of the above-mentioned through holes can be adjusted as needed, and no further limitations are imposed here.

[0056] In this application, the indirect internal reforming solid oxide fuel cell connector also includes a gas distribution section 50 for connecting gaseous materials and corresponding flow channels.

[0057] For reference, one end of the first flow channel 12 can be connected to the inlet of the gas material (specifically, the recombination gas inlet 411 provided on the anode plate 10) via the gas distribution section 50, and the other end can be connected to the corresponding gas material outlet (specifically, the recombination gas outlet 412 provided on the anode plate 10); similarly, one end of the second flow channel can be connected to the inlet of the gas material (specifically, the oxidation gas inlet 421 provided on the cathode plate 30) via the gas distribution section 50, and the other end can be connected to the corresponding gas material outlet (specifically, the oxidation gas outlet 422 provided on the cathode plate 30). The gas distribution section 50 can be provided with multiple gas distribution strips to make the gas distribution more uniform.

[0058] The reformer plate 20 is provided with a porous region 31 for the flow of hydrocarbon fuel and for the reforming reaction to occur. In some alternative embodiments, the porous region 31 is provided in the middle region of the reformer plate 20.

[0059] The through-holes for passing hydrocarbon fuel are connected to the porous region 31. That is, the hydrocarbon fuel through-holes provided on the second side 52 and the fourth side 54 of the reforming plate 20 are both connected to the porous region 31.

[0060] In this application, the porosity gradient of the porous region 31 decreases along the direction of hydrocarbon fuel flow.

[0061] Fuel reforming within a battery is a very rapid, strongly endothermic chemical reaction that requires the absorption of a large amount of heat. This application addresses this by setting the porosity to a gradient-reducing mode, which helps avoid large temperature gradients within the battery during the reforming process, reducing the resulting thermal stress and preventing damage to the battery structure. Furthermore, this method not only prevents carbon deposits from hydrocarbon fuels from covering the anode active sites and causing a significant decrease in battery performance, but also avoids structural damage such as separation at heterogeneous interfaces within the battery.

[0062] Preferably, the porosity of the porous region 31 decreases in a gradient within the range of 50%-90% (the minimum porosity and the maximum porosity change in a gradient between 50% and 90%), for example, the gradient can be set to 1%, 2%, 5%, 10%, 15%, 20%, 25% or 30%, etc.

[0063] It should be noted that if the porosity of the porous region 31 is less than 50%, a large pressure drop in hydrocarbon fuel flow is likely to occur in the porous region, increasing the energy loss of the fuel pump; if it is higher than 90%, it will reduce the area of ​​the reforming reaction zone, resulting in incomplete hydrocarbon fuel reforming reaction.

[0064] For reference, the pore size of each pore in the porous region 31 can be 50-1000μm, such as 50μm, 100μm, 200μm, 300μm, 400μm, 500μm, 600μm, 700μm, 800μm, 900μm or 1000μm, or any other value in the range of 50-1000μm.

[0065] It should be noted that if the pore diameter of each pore in the porous region 31 is less than 50 μm, it will increase the flow resistance of fuel gas and will not be conducive to reducing pressure loss; if it is greater than 1000 μm, it will not only reduce the area of ​​the reforming reaction region and reduce the mechanical strength of the porous region, but also increase the thickness of the connector.

[0066] In some embodiments, the number of porous regions 31 may be only one. In other embodiments, the porous region 31 includes at least two sub-porous regions 32 along a direction perpendicular to the hydrocarbon fuel flow. For example, the porous region 31 may be formed by two, three, four, five or more sub-porous regions 32.

[0067] Accordingly, the number of hydrocarbon fuel inlets 431 and hydrocarbon fuel outlets 432 in the hydrocarbon fuel through-holes is equal to the number of sub-porous regions 32, that is, each sub-porous region 32 corresponds to one hydrocarbon fuel inlet 431 and one hydrocarbon fuel outlet 432. For example, both ends of each sub-porous region 32 are connected to the hydrocarbon fuel inlet 431 near the second side 52 of the reforming plate 20 and the hydrocarbon fuel outlet 432 near the fourth side 54 of the reforming plate 20, respectively.

[0068] When the porous region 31 includes at least two sub-porous regions 32, adjacent sub-porous regions 32 are separated by solid ribs 35. The porous region 31 is a region having a polyhedral lattice unit structure 36, and the polyhedron can be, for example, a hexahedron or an octahedron.

[0069] Furthermore, all surfaces involved in the porous region 31 are provided with catalysts for the reforming reaction of hydrocarbon fuels. These surfaces include the surfaces of the porous framework structure and all surfaces surrounding the porous region 31.

[0070] For reference, the catalyst can be generated in situ through the design of the linker material, or it can be loaded onto the surface of the porous region 31 by methods such as impregnation.

[0071] The catalyst can be a material with high catalytic activity, and can include, by example but not by limitation, at least one of Al2O3, NiO, CeO2 and La2O3.

[0072] The specific loading method of the catalyst in this application is not limited, as long as it can be loaded on all surfaces involved in the porous region 31.

[0073] In summary, the solid oxide fuel cell connector provided in this application employs internal reforming to reform the fuel, avoiding the drawbacks of external reforming methods such as large system size, system complexity, and high cost. Furthermore, the solid oxide fuel cell connector provided in this application helps avoid large temperature gradients within the cell during the reforming process, reducing the resulting thermal stress and preventing structural damage. In addition, this solid oxide fuel cell connector not only prevents carbon deposits formed from hydrocarbon fuels from covering the anode active sites, thus avoiding a significant decrease in cell performance, but also prevents structural damage such as separation of heterogeneous interfaces within the cell.

[0074] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An indirect internal reforming solid oxide fuel cell interconnect, characterized by, It includes an anode plate for connection to an anode and a cathode plate for connection to a cathode, which are disposed opposite to each other, and a reforming plate located between the anode plate and the cathode plate; the anode plate, the reforming plate and the cathode plate are sequentially connected and integrally formed; The reforming plate is provided with a porous region for hydrocarbon fuel flow and for the reforming reaction to occur; the porosity gradient of the porous region decreases along the direction of hydrocarbon fuel flow. The cathode plate, the anode plate, and the reforming plate are each provided with through holes for the flow of at least one of hydrocarbon fuel, reforming gas, and oxidizing gas, wherein the through holes for the flow of hydrocarbon fuel are connected to the porous region. The anode plate has a first flow channel for the flow of recombination gas on the side away from the reforming plate, and the first flow channel is connected to a through hole for the flow of corresponding gaseous material; the cathode plate has a second flow channel for the flow of oxidizing gas on the side away from the reforming plate, and the second flow channel is connected to a through hole for the flow of corresponding gaseous material. The porosity is 50-90%, and the pore diameter of each pore in the porous region is 50-1000 μm; The porous region includes at least two sub-porous regions, and adjacent sub-porous regions are separated by solid ribs; the porous region is a region with a polyhedral lattice unit structure; all surfaces involved in the porous region are provided with catalysts for the reforming reaction of hydrocarbon fuels; The anode plate has a first groove on the side surface away from the reforming plate, and the first flow channel is disposed in the first groove. The extension direction of the first flow channel is the flow direction of the reforming gas material. The cathode plate has a second groove on the side surface away from the reforming plate, and the second flow channel is disposed in the second groove. The extension direction of the second flow channel is the flow direction of the oxidizing gaseous material. The through-hole includes a recombination gas through-hole for the flow of recombination gas and an oxidation gas through-hole for the flow of oxidation gas. The recombination gas passage includes a recombination gas inlet and a recombination gas outlet, and the oxidation gas passage includes an oxidation gas inlet and an oxidation gas outlet. One end of the first flow channel is connected to the recombination gas inlet via a gas distribution section, and the other end is connected to the recombination gas outlet; correspondingly, one end of the second flow channel is connected to the oxidation gas inlet via a gas distribution section, and the other end is connected to the oxidation gas outlet. The through-hole also includes a hydrocarbon fuel through-hole for supplying hydrocarbon fuel, the hydrocarbon fuel through-hole including a hydrocarbon fuel inlet and a hydrocarbon fuel outlet arranged opposite to each other, and the number of hydrocarbon fuel inlets and hydrocarbon fuel outlets are equal; both the hydrocarbon fuel inlets and the hydrocarbon fuel outlets are connected to the porous region.

2. The indirect internal reforming solid oxide fuel cell interconnect of claim 1, wherein, The indirect internal reforming solid oxide fuel cell connector also includes a gas distribution section for connecting gaseous materials and corresponding flow channels.

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