Manufacturing method of anode support type SOFC half cell, anode support type SOFC half cell and anode support type SOFC cell
By combining dry pressing and casting with wet pressing and stacking, the problem of reduced mechanical strength and porosity defects caused by the reduced electrolyte layer thickness in anode-supported SOFC batteries was solved. This improved the battery yield and strength, increased the gas passage, and ensured the stability and efficient operation of the fuel cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-03-10
AI Technical Summary
Existing anode-supported SOFC batteries reduce the electrolyte layer thickness while ensuring aeration, leading to decreased mechanical strength, increased pore defects and fuel leakage, and low yield.
The anode support layer is fabricated by dry pressing, the anode functional layer and electrolyte layer are fabricated by tape casting, and the electrolyte layer is stacked by wet pressing and warm water pressing to avoid direct contact between the electrolyte layer and the anode support layer. The sintering shrinkage rate is adjusted to be consistent, and finally, the anode-supported SOFC half cell with air channels is formed by debinding and sintering.
It improves the yield and mechanical strength of SOFC batteries, ensures that the electrolyte layer surface is free of pores, increases the gas channels, and improves the gas supply.
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Figure CN121642059A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of solid oxide fuel cell, in particular to a manufacturing method of an anode-supported SOFC half cell, an anode-supported SOFC half cell and an anode-supported SOFC cell. BACKGROUND
[0002] Solid oxide fuel cell (SOFC) is also called ceramic fuel cell, which is a high-efficiency power generation device for directly converting chemical energy into electrical energy under ceramic structure. The main advantages of SOFC are that no noble metal catalyst is used, the operation temperature is high, the application range is wide, hydrogen energy can be efficiently utilized, and the environment is friendly, etc., which has very broad development prospects.
[0003] As the core unit for directly realizing the conversion of chemical energy into electrical energy, the SOFC cell is usually composed of a dense YSZ electrolyte layer, a NiO-YSZ porous anode layer and a cathode layer. According to the different support bodies, the SOFC cell is mainly divided into electrolyte-supported, anode-supported and cathode-supported SOFC cells. The support body not only needs to have good mechanical strength to improve the physical support, but also needs to have a large enough gas channel to ensure the delivery of fuel gas. In order to ensure the ventilation amount, the electrolyte layer thickness of the existing anode-supported SOFC cell is gradually reduced. When the electrolyte layer thickness is reduced, the mechanical strength is reduced, and the electrolyte layer with smaller thickness is difficult to match the shrinkage rate of the porous anode layer during the preparation process of the SOFC cell, which easily leads to the generation of hole defects on the surface of the electrolyte layer, and also leads to the delamination and deformation of the SOFC cell structure, thereby causing fuel leakage, SOFC cell failure and low yield of SOFC cell.
[0004] Therefore, it is an important task for the person skilled in the art to find a technical solution that can solve the above technical problems. SUMMARY
[0005] The present application discloses a manufacturing method of an anode-supported SOFC half cell, an anode-supported SOFC half cell and an anode-supported SOFC cell, which are used to solve the technical problem that the electrolyte layer thickness is reduced to ensure the ventilation amount of the existing anode-supported SOFC half cell, thereby easily causing the generation of hole defects on the surface of the electrolyte layer and leading to fuel leakage.
[0006] The manufacturing method of the anode-supported SOFC half cell provided by the present application comprises the following steps:
[0007] S1, uniformly dispersing and mixing graphite powder, adhesive and solvent to obtain graphite slurry, and obtaining graphite net by flow casting the graphite slurry;
[0008] S2, the first anode powder is filled into the mold, the graphite net is placed on the surface of the first anode powder after the first anode powder is scraped flat, then the first anode powder is continuously filled into the mold, the first anode powder is scraped flat again, and then the anode support layer with the graphite net is obtained by dry pressing.
[0009] S3, the second anode powder is uniformly dispersed and mixed with the binder and the solvent to obtain an anode functional slurry, and the anode functional slurry is flow-cast to obtain an anode functional layer.
[0010] S4, the electrolyte powder is uniformly dispersed and mixed with the binder and the solvent to obtain an electrolyte slurry, and the electrolyte slurry is flow-cast to obtain an electrolyte layer.
[0011] S5, a layer of the anode functional layer is stacked on the opposite surfaces of the anode support layer by wet pressing in layers, so as to obtain a first combined green body.
[0012] S6, a layer of the electrolyte layer is stacked on the surface of the anode functional layer of the first combined green body by warm water wet pressing, so as to obtain a second combined green body.
[0013] S7, the second combined green body is degassed and sintered, the graphite net is lost after degassing and sintering, so as to obtain an anode support type SOFC half-cell with air channels.
[0014] Optionally, the step S1 specifically comprises:
[0015] In the 100-150g graphite powder, 20-50% solvent and 10-30% binder are added in the mass percentage of graphite slurry, and the graphite slurry is uniformly dispersed after stirring to form the graphite slurry, the graphite slurry is flow-cast at 25℃ to obtain a graphite green body with a thickness range of 0.65-0.80mm, and finally the graphite net is obtained by machining and punching.
[0016] Optionally, in the step S2, the dry pressing pressure of the dry pressing is 200-300T, and the thickness of the anode support layer with the graphite net obtained by the dry pressing is 2.0-2.5mm.
[0017] Optionally, the step S3 specifically comprises:
[0018] In the second anode powder, 1-2% dispersant and 20-30% solvent are added in the mass percentage of the anode functional slurry, then ball milling is performed for 5-20h, then 10-25% binder is added, ball milling is continuously performed for 5-20h, finally flow-casting is performed and drying is performed at a temperature range of 30-50℃ to obtain an anode functional layer with a thickness range of 10-20μm.
[0019] Optionally, the step S4 specifically comprises:
[0020] In the electrolyte powder, 1-2% dispersant and 20-30% solvent are added in terms of mass percentage of the electrolyte slurry, and then ball milling is carried out for 5-20h, then 10-25% binder is added, and ball milling is continued for 12-18h, finally, the electrolyte layer with a thickness of 10-20μm is obtained through flow casting and drying at a temperature range of 30-50℃.
[0021] Optionally, the step S5 specifically comprises:
[0022] The wet pressing lamination is adopted to stack a layer of the anode functional layer on the opposite surfaces of the anode support layer respectively, and then wet pressing is carried out at a pressure range of 160-300MPa, so as to obtain the first combined green body.
[0023] Optionally, the step S6 specifically comprises:
[0024] The warm water wet pressing lamination is adopted to stack a layer of the electrolyte layer on the surface of the anode functional layer of the first combined green body, and then warm water wet pressing is carried out at a temperature range of 75-85℃ and a pressure range of 90-150MPa, so as to obtain the second combined green body.
[0025] Optionally, the step S7 specifically comprises:
[0026] The second combined green body is subjected to degreasing sintering, the degreasing temperature range is 650-800℃, the sintering temperature range is 1300-1400℃, after degreasing sintering, heat preservation is carried out for 2-4h, and the graphite net is lost, so as to obtain the anode support type SOFC half cell with air channels.
[0027] The application provides an anode support type SOFC half cell, which is prepared by the preparation method of the anode support type SOFC half cell according to any one of claims 1-8.
[0028] The application provides an anode support type SOFC cell, which comprises the anode support type SOFC half cell according to claim 9.
[0029] Compared with the prior art, the application has the following beneficial effects:
[0030] In the manufacturing method, the anode support layer is manufactured by dry pressing, the anode functional layer and the electrolyte layer are manufactured by flow casting, and after the anode support layer, the anode functional layer and the electrolyte layer are manufactured, the first layer of anode functional layer is first stacked on the opposite two surfaces of the anode support layer by wet pressing, then a layer of electrolyte layer is stacked on the surface of the anode functional layer by warm water wet pressing, and finally the anode support type SOFC half cell is obtained by sintering and glue removal. Through the above design, in order to avoid defects of the electrolyte layer with small thickness in the manufacturing process of the SOFC half cell, the anode functional layer manufactured by flow casting is added between the anode support layer and the electrolyte layer, the anode support layer manufactured by dry pressing does not directly contact with the electrolyte layer manufactured by flow casting, the sintering shrinkage of the electrolyte layer and the anode support layer is adjusted, the defects of holes on the surface of the electrolyte layer after sintering and glue removal are effectively improved, and the anode support type SOFC half cell with high efficiency, flatness and smoothness is manufactured, so that the technical effects of improving the yield of the SOFC cell and improving the strength of the SOFC cell are achieved. BRIEF DESCRIPTION OF DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0032] Figure 1 A flow chart of a manufacturing method of an anode support type SOFC half cell provided by the present application is shown in the figure.
[0033] Figure 2 A structure explosion diagram of an anode support type SOFC half cell provided by the present application is shown in the figure.
[0034] Figure 3 A sectional view of a structure explosion diagram of an anode support type SOFC half cell provided by the present application is shown in the figure.
[0035] Figure 4 A sectional SEM diagram of an anode support type SOFC half cell provided by the present application is shown in the figure.
[0036] Illustration: graphite net 1; anode support layer 2; anode functional layer 3; electrolyte layer 4; air duct 5. DETAILED DESCRIPTION
[0037] The application discloses a manufacturing method of an anode-supported SOFC half cell, the anode-supported SOFC half cell and an anode-supported SOFC cell, and aims to solve the technical problem that the electrolyte layer thickness is reduced to ensure the ventilation amount, thus easily causing the electrolyte layer surface to have hole defects and leading to fuel leakage.
[0038] For those skilled in the technical field, the application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.
[0039] Please refer to Figures 1 to 4 The manufacturing method of the anode-supported SOFC half cell provided by the embodiment of the application comprises the following steps.
[0040] S1, uniformly dispersing and mixing graphite powder, a binder and a solvent to obtain graphite slurry, and obtaining a graphite net through flow casting of the graphite slurry;
[0041] S2, filling first anode powder into a mold, performing scraping treatment on the first anode powder, placing the graphite net on the surface of the first anode powder, then continuously filling the first anode powder into the mold, performing scraping treatment on the first anode powder again, and obtaining an anode supporting layer with the graphite net through dry pressing;
[0042] S3, uniformly dispersing and mixing second anode powder, a binder and a solvent to obtain anode functional slurry, and obtaining an anode functional layer through flow casting of the anode functional slurry;
[0043] S4, uniformly dispersing and mixing electrolyte powder, a binder and a solvent to obtain electrolyte slurry, and obtaining an electrolyte layer through flow casting of the electrolyte slurry;
[0044] S5, adopting wet pressing lamination to stack one layer of the anode functional layer on the opposite surfaces of the anode supporting layer, so as to obtain a first combined green body;
[0045] S6, adopting warm water wet pressing lamination to stack one layer of the electrolyte layer on the surface of the anode functional layer of the first combined green body, so as to obtain a second combined green body;
[0046] S7, performing glue removal sintering on the second combined green body, and removing the graphite net after sintering, so as to obtain an anode-supported SOFC half cell with air channels.
[0047] In the manufacturing method of the embodiment, the anode support layer is manufactured by dry pressing, the anode functional layer and the electrolyte layer are manufactured by flow casting, and after the anode support layer, the anode functional layer and the electrolyte layer are manufactured, first, the first layer of anode functional layer is stacked on the opposite two surfaces of the anode support layer by wet pressing, then a layer of electrolyte layer is stacked on the surface of the anode functional layer by warm water wet pressing, and finally the anode support type SOFC half cell is obtained by sintering and glue removal. Through the above design, in order to avoid defects of the electrolyte layer with small thickness in the manufacturing process of the SOFC half cell, the anode functional layer manufactured by flow casting is added between the anode support layer and the electrolyte layer, the anode support layer manufactured by dry pressing does not directly contact with the electrolyte layer manufactured by flow casting, the sintering shrinkage of the electrolyte layer and the anode support layer is adjusted to be consistent, the defect of holes on the surface of the electrolyte layer after sintering and glue removal is effectively improved, and the anode support type SOFC half cell with high efficiency, flatness and smoothness is beneficial to be manufactured, so that the technical effects of improving the yield of the SOFC cell and improving the strength of the SOFC cell are achieved.
[0048] Further, the step S1 in the embodiment specifically comprises:
[0049] In percentage of mass of the graphite slurry, 20-50% of solvent and 10-30% of adhesive are added in 100-150g of graphite powder, and after uniform stirring and dispersion, the graphite slurry is formed, the graphite slurry is obtained by flow casting at room temperature of 25℃, the graphite green body with a thickness range of 0.65-0.80mm is obtained, and finally the graphite net is obtained by machining and punching.
[0050] It should be noted that in some specific embodiments of the embodiment, the amount of solvent can be 20%, 30%, 35%, etc., the amount of adhesive can be 10%, 20%, 15%, etc., and the thickness of the graphite green body obtained by flow casting can be 0.65mm, 0.7mm, 0.8mm, etc. The embodiment does not limit this. In addition, the above-mentioned solvent and adhesive are common solvents and adhesives in the prior art, and the embodiment does not limit this.
[0051] Further, in step S2 of the embodiment, the dry pressing pressure of the dry pressing is 200-300T, and the thickness of the anode support layer with the graphite net obtained by the dry pressing is 2.0-2.5mm.
[0052] It should be noted that in some specific embodiments of the embodiment, the dry pressing pressure can be 200T, 260T, 300T, etc., and the thickness of the anode support layer obtained by dry pressing can be 2.0mm, 2.3mm, 2.5mm, etc.
[0053] In addition, in the above-mentioned anode support layer design, since the graphite mesh inside the anode support layer is specifically formed by casting, after debinding and sintering, the amount of graphite mesh residue after sintering is very small, which effectively increases the gas channel size of the anode support layer, thereby increasing the gas supply of the battery.
[0054] Furthermore, in this embodiment, the first anode powder can be NiO-YSZ powder.
[0055] Furthermore, step S3 in this embodiment specifically includes:
[0056] Based on the mass percentage of the anodic functional slurry, 1-2% dispersant and 20-30% solvent are added to the second anodic powder, and then ball milled for 5-20 hours. Next, 10-25% binder is added, and ball milling continues for 5-20 hours. Finally, the anodic functional layer with a thickness of 10-20 μm is obtained by casting and drying at a temperature range of 30-50℃.
[0057] It should be noted that in some specific embodiments of this example, the amount of dispersant can be 1%, 1.2%, 2%, etc., the amount of solvent can be 20%, 25%, 28%, etc., the amount of binder can be 10%, 20%, 15%, etc., and the thickness of the anolyte functional layer obtained after casting and drying can be 10μm, 15μm, 20μm. Furthermore, the above-mentioned dispersant, solvent, and binder are all commonly used solvents and binders in the prior art, and this embodiment does not impose any limitations on them.
[0058] Furthermore, in this embodiment, the second anode powder can be NiO-YSZ powder.
[0059] Furthermore, step S4 in this embodiment specifically includes:
[0060] Based on the mass percentage of the electrolyte slurry, 1-2% dispersant and 20-30% solvent are added to the electrolyte powder, and then ball milled for 5-20 hours. Next, 10-25% binder is added, and ball milling continues for 12-18 hours. Finally, the mixture is cast and dried at a temperature range of 30-50℃ to obtain an electrolyte layer with a thickness range of 10-20 μm.
[0061] It should be noted that in some specific embodiments of this example, the amount of dispersant can be 1%, 1.2%, 2%, etc., the amount of solvent can be 20%, 25%, 28%, etc., the amount of binder can be 10%, 20%, 15%, etc., and the thickness of the electrolyte layer obtained after casting and drying can be 10μm, 15μm, 20μm. Furthermore, the above-mentioned dispersant, solvent, and binder are all commonly used solvents and binders in the prior art, and this embodiment does not impose any limitations on them.
[0062] Furthermore, the electrolyte material in this embodiment can be YSZ powder.
[0063] Furthermore, step S5 in this embodiment specifically includes:
[0064] By employing a wet pressing method, an anode functional layer is superimposed on each of the two opposite surfaces of the anode support layer, and then subjected to wet pressing at a pressure range of 160~300MPa to obtain the first combined green compact.
[0065] It should be noted that in the above design, an anode functional layer is superimposed on both the top and bottom surfaces of the anode support layer. The purpose is to effectively improve the internal uniformity and flatness of the dry-pressed anode support layer. At the same time, the presence of the anode functional layer ensures that the dry-pressed anode support layer will not come into direct contact with the electrolyte layer, effectively solving the problem of easy leakage points on the surface after the subsequent casting of the electrolyte layer.
[0066] Furthermore, step S6 in this embodiment specifically includes:
[0067] The electrolyte layer is superimposed on the surface of the anode functional layer of the first combined green body by warm water wet pressing. The second combined green body is obtained by warm water wet pressing at a temperature range of 75-85℃ and a pressure range of 90-150MPa.
[0068] It should be noted that, in order to avoid the problem of air leakage from the side seal of SOFC batteries, this embodiment implements a side seal design on the side of the second assembled green blank.
[0069] Furthermore, step S7 of this embodiment specifically includes:
[0070] The second combination of green bodies is subjected to debinding and sintering at a debinding temperature range of 650-800℃ and a sintering temperature range of 1300-1400℃. After debinding and sintering, the body is held at the temperature for 2-4 hours until the graphite mesh burns off, thus obtaining an anode-supported SOFC half-cell with air channels.
[0071] It should be noted that, through the above design, after the debinding and sintering, the graphite mesh burns away, leaving an air channel of 0.28*0.45mm in the SOFC battery. Compared with the traditional method of fabricating SOFC batteries by casting and stacking, the SOFC battery in this embodiment has a larger and wider air channel, and is not easy to crack after sintering, thus ensuring the quality of the SOFC battery.
[0072] Please see Figures 1 to 4 The present invention provides an anode-supported SOFC half-cell, which is prepared by the above-described method for manufacturing an anode-supported SOFC half-cell.
[0073] It should be noted that the anode-supported SOFC half-cells prepared by the above method have a higher yield, better strength, larger gas channels, and more sufficient gas supply.
[0074] Please see Figures 1 to 4 The present invention provides an anode-supported SOFC battery, which includes the above-mentioned anode-supported SOFC half cell.
[0075] It should be noted that the anode-supported SOFC battery in this embodiment has a higher yield, better strength, and a larger gas channel, resulting in a more sufficient gas supply.
[0076] The above provides a detailed description of the fabrication method, the anode-supported SOFC half-cell, and the anode-supported SOFC battery provided by the embodiments of the present invention. The following is a specific experimental example to verify the SOFC half-cell fabricated using the anode-supported SOFC half-cell fabrication method:
[0077] Preparation of graphite mesh: Add 50% solvent and 20% binder to 100g of graphite powder, stir and disperse evenly, and then cast at room temperature to obtain a 0.65mm thick graphite green blank, which is then punched with a stamping machine to obtain a graphite mesh.
[0078] Preparation of the anode support layer: The first anode powder (NiO-YSZ) is filled into the mold, leveled, and then a graphite mesh is placed in; the powder feed is increased, and another layer of the first anode powder is laid on the graphite mesh, leveled, and dry-pressed at a pressure of 250T to obtain an anode support layer with a size of 160*80mm and a thickness of 2.5mm with a graphite mesh.
[0079] Preparation of the anode functional layer: 1% dispersant and 30% solvent were added to the second anode powder, ball milled for 5 hours, 20% binder was added and ball milled for another 12 hours, and the mixture was cast to a thickness of 20 μm. After drying at 30-50℃, the anode functional layer was obtained. Then the anode functional layer was sliced, with a slice size of 160*90 mm.
[0080] Preparation of electrolyte layer: Add 1% dispersant and 30% solvent to 100g electrolyte powder (YSZ), ball mill for 5h, add 20% binder, continue ball milling for 12h, cast to a thickness of 20μm, dry at 50℃, and slice size 160*90mm.
[0081] Wet pressing and lamination: 1 layer of anode functional layer + 1 layer of anode support layer + 1 layer of anode functional layer, subjected to 160MPa isostatic pressing to form the first combination of green blanks.
[0082] Warm-pressed lamination: 1 layer of electrolyte layer + 1 layer of anode functional layer + 1 layer of anode support layer + 1 layer of anode functional layer + 1 layer of electrolyte layer, wet-pressed at 100MPa in warm water at 80℃ to obtain the second combined green body.
[0083] Debinding and sintering: A porous plate is used as the bottom for debinding. The debinding temperature is 700℃ and the holding time is 5 hours. The sintering temperature is 1400℃ and the holding time is 4 hours. After sintering, the graphite mesh is burned off, thus obtaining an anode-supported SOFC half cell with air channels. The size of the air channels is 0.28*0.45mm.
[0084] The anode support layer of the anode-supported SOFC half-cell prepared by the above method was threaded with silver wire and filled with silver paste, and then the working test was carried out, as shown in Table 1 below:
[0085]
[0086] Table 1
[0087] The SOFC half-cell tested had a three-point bending strength of 90 MPa. The current test results in Table 1 show a maximum current of 4.58 A. This SOFC half-cell has advantages such as high power, good resistance to carbon buildup, stable performance, and long lifespan.
[0088] The foregoing has provided a detailed description of the manufacturing method of an anode-supported SOFC half-cell, the anode-supported SOFC half-cell, and the anode-supported SOFC battery provided by the present invention. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A method of fabricating an anode-supported SOFC half-cell, characterized by, The method comprises the following steps: S1, uniformly dispersing and mixing graphite powder, adhesive and solvent to obtain graphite slurry, and casting the graphite slurry to obtain a graphite net; S2, filling the first anode powder into a mold, performing scraping treatment on the first anode powder, placing the graphite net on the surface of the first anode powder, and then continuously filling the first anode powder into the mold, performing scraping treatment on the first anode powder again, and then obtaining an anode support layer with the graphite net by dry pressing; S3, uniformly dispersing and mixing the second anode powder, adhesive and solvent to obtain an anode functional slurry, and casting the anode functional slurry to obtain an anode functional layer; S4, uniformly dispersing and mixing electrolyte powder, adhesive and solvent to obtain an electrolyte slurry, and casting the electrolyte slurry to obtain an electrolyte layer; S5, stacking one layer of the anode functional layer on the opposite surfaces of the anode support layer by wet pressing, to obtain a first combined green body; S6, stacking one layer of the electrolyte layer on the surface of the anode functional layer of the first combined green body by warm water wet pressing, to obtain a second combined green body; S7, performing degassing and sintering on the second combined green body, and then obtaining an anode support type SOFC half cell with air channels by burning loss of the graphite net.
2. The method according to claim 1, wherein The step S1 specifically comprises: In the graphite slurry, 20-50% solvent and 10-30% adhesive are added in 100-150g graphite powder, and the graphite slurry is formed after uniform stirring and dispersion. The graphite slurry is cast at room temperature of 25℃ to obtain a graphite green body with a thickness range of 0.65-0.80mm, and finally a graphite net is obtained by machining and punching.
3. The method according to claim 1, wherein In the step S2, the dry pressing pressure range of the dry pressing is 200-300T, and the thickness range of the anode support layer with the graphite net obtained by the dry pressing is 2.0-2.5mm.
4. The method according to claim 3, wherein The step S3 specifically comprises: In the anode functional slurry, 1-2% dispersant and 20-30% solvent are added in the second anode powder, and then ball milling is performed for 5-20h. Then 10-25% adhesive is added, and ball milling is continuously performed for 5-20h. Finally, the anode functional layer with a thickness range of 10-20μm is obtained by casting and drying at a temperature range of 30-50℃.
5. The method of claim 1, wherein the method further comprises: The step S4 specifically comprises: In the electrolyte slurry, 1-2% dispersant and 20-30% solvent are added in the electrolyte powder, and then ball milling is performed for 5-20h. Then 10-25% adhesive is added, and ball milling is continuously performed for 12-18h. Finally, the electrolyte layer with a thickness range of 10-20μm is obtained by casting and drying at a temperature range of 30-50℃.
6. The method of claim 1, wherein the method further comprises: The step S5 specifically comprises: The anode functional layer is stacked on the opposite surfaces of the anode support layer by wet pressing, and the first combined green body is obtained by wet pressing at a pressure range of 160-300MPa.
7. The method of claim 1, wherein the method further comprises: The step S6 specifically comprises: A layer of the electrolyte layer is stacked on the surface of the anode functional layer of the first combined green body by means of warm water wet pressing stacking, and the second combined green body is obtained by warm water wet pressing at a temperature range of 75-85 DEG C and a pressure range of 90-150 MPa.
8. The method of claim 1, wherein the method further comprises: The step S7 specifically comprises: The second combined green body is subjected to degreasing sintering, the degreasing temperature range is 650-800 DEG C, the sintering temperature range is 1300-1400 DEG C, and after degreasing sintering, the graphite net is kept for 2-4 h and loses weight, thereby obtaining an anode-supported SOFC half cell with air channels.
9. An anode-supported SOFC half-cell, characterized in that The anode-supported SOFC half cell is prepared by the method for preparing the anode-supported SOFC half cell according to any one of claims 1-8.
10. An anode-supported SOFC cell, characterized by The anode-supported SOFC half cell according to claim 9 is included.