KR100886239B1 - Method for suppressing reaction by-product generation, solid oxide fuel cell using same and manufacturing method thereof - Google Patents

Abstract

Disclosed is a solid oxide fuel cell in an anode support type capable of integrally sintering a fuel electrode, an air electrode, and an electrolyte. The solid oxide fuel cell is a fuel electrode formed of NiO / YSZ cermet mixed with nickel oxide (NiO) and yttria stabilized zirconia (Yttria Stabilized ZrO ₂ , YSZ), and formed of YSZ, and an electrolyte and a manganese system stacked on the anode. It is formed of LSM / GDC cermet mixed with ceria (GDC) doped with pbroskyite (LSM) and gadolinium (Gd), interposed between the cathode and the electrolyte and the cathode laminated on the electrolyte. It consists of a boundary layer which suppresses reaction between air electrodes. Therefore, in the sintering process of the solid oxide fuel cell, by-products are prevented from being generated by the reaction between the electrolyte and the cathode, and the reaction by-products prevent the movement of oxygen ions at the boundary between the electrolyte and the cathode and thus the solid oxide. Prevents deterioration of the fuel cell performance.

Description

Reaction by-product generation method and solid oxide fuel cell using same and manufacturing method therefor {PREVENTING METHOD OF GENERATING BY-PRODUCT AND SOLID OXIDE FUEL CELL USING THE PREVENTING METHOD AND METHOD OF THE SOLID OXIDE FUEL CELL}

The present invention relates to a solid oxide fuel cell, and more particularly, an anode-supported solid oxide fuel capable of integrally sintering a fuel electrode, an air electrode, and an electrolyte, and preventing generation of reaction by-products at the boundary between the cathode and the electrolyte during the sintering process. It relates to a method for producing a battery.

Fuel cell types include molten carbonate fuel cells (MCFCs), solid oxide fuel cells (SOFCs) operating at high temperatures, phosphoric acid fuel cells (AFCs) operating at relatively low temperatures, polyelectrolyte fuel cells (PEMFCs), and direct methanol fuels. Batteries (DEMFC) and the like.

A solid oxide fuel cell (SOFC) is an energy conversion device that produces direct current electricity by electrochemically reacting an oxidant (eg oxygen) and a gaseous fuel (eg hydrogen) through an oxide electrolyte. . Key features of current solid oxide fuel cell techniques include solid-state structure, adaptability of multiple fuels, and high temperature operability. Due to the characteristics of such a solid oxide fuel cell, a solid oxide fuel cell has the potential to be a high performance, clean and efficient power source, has been developed for a variety of power generation applications.

A solid oxide fuel cell is formed by stacking unit cells composed of an anode, an electrolyte, and a cathode in series. Here, the stack of each unit cell is an electrical connection between a fuel electrode of one unit cell and an air electrode of a unit cell arranged next, and a separator is formed between each unit cell.

The solid oxide fuel cell unit cell is a ceramic multilayer structure composed of an oxide electrolyte interposed between the anode and the cathode. A typical solid unit cells of oxide fuel cells, is used and the yttria-stabilized zirconia (Yttria Stabilized ZrO _2, YSZ) as the electrolyte, an air electrode as is, for strontium manganite doped lanthanum nitro (LSM) (for example, La _0.8 Sr _0.2 MnO ₃ ) is used, and as a fuel electrode, cermaet (NiO / YSZ) in which nickel oxide (NiO) and yttria stabilized zirconia are mixed is used.

The unit cell of the conventional anode-supported solid oxide fuel cell cannot simultaneously fire the cathode and the electrolyte due to the difference in thermal expansion of the materials forming the cathode and the electrolyte. Therefore, a unit cell of a solid oxide fuel cell typically sinters a fuel electrode, an electrolyte, and an air electrode, or first sinters a fuel electrode serving as a support, and then sinters by coating an electrolyte on the fuel electrode, and finally, by applying an air electrode and sintering. Is prepared.

Since the anode, the electrolyte, and the cathode must be sintered separately, the manufacturing process of the unit cell is not only complicated, and it is difficult to continuously perform the manufacturing process, which requires a lot of time and manpower when manufacturing the unit cell. This increases the manufacturing cost of the unit cell, which becomes a more serious problem as the size and output of the unit cell increases.

Recently, various studies have been conducted to shorten the multi-step sintering process. In particular, when manufacturing the anode using tape casting, the anode and the electrolyte may be fired at the same time, but due to the bending phenomenon of the stacked fuel cells, two or more firing processes are required. In addition, when the fuel electrode, the electrolyte, and the air electrode are laminated at the same time and fired at one time, the output is reduced by 25% or more compared with the conventional method, which makes it impossible to use.

When sintering the anode, electrolyte and cathode simultaneously, the lanthanum (La) and strontium (Sr) of the LSM forming the cathode react with the zirconia (ZrO ₂ ) of YSZ forming the anode and thus, SrZrO ₃ or La ₂ Zr ₂ O ₇ This is because the secondary phase material of. In addition, the secondary material thus produced has a large electrical resistance, thereby forming an insulating layer at the interface between the electrolyte and the cathode, thereby preventing the movement of oxygen ions through the electrolyte, thereby degrading the performance of the solid oxide fuel cell.

The present invention is to solve the above-mentioned problems, the reaction by-products to suppress the production of reaction by-products between the electrolyte and the cathode in the solid oxide fuel cell, so that the fuel electrode, the electrolyte and the cathode can be simultaneously calcined at once It is for providing a suppression method.

In addition, the present invention is to provide a method for suppressing reaction by-products without deterioration of the performance of the solid oxide fuel cell after sintering of the unit cell by improving the composition of the cathode and the boundary layer between the electrolyte and the cathode in the solid oxide fuel cell.

In addition, the present invention is to provide a solid oxide fuel cell and a method for producing a solid oxide fuel cell produced by one time sintering process using the reaction by-product suppression method.

According to the embodiments of the present invention for achieving the above object of the present invention, the solid oxide fuel cell NiO / YSZ is a mixture of nickel oxide (NiO) and yttria stabilized zirconia (Yttria Stabilized ZrO ₂ , YSZ) A Metro-formed anode, formed of YSZ, formed of an LSM / GDC cermet mixed with an electrolyte stacked on the anode, and a mixture of ceria doped with manganese-based brobrosite (LSM) and gadolinium (Gd), and the electrolyte A boundary layer interposed between the air electrode and the electrolyte and the air electrode stacked on the substrate to suppress a reaction between the electrolyte and the air electrode.

In an embodiment, the boundary layer is formed of GDC.

In an embodiment, the anode is mixed NiO and YSZ in a weight ratio of 50:50 to 60:40. The cathode is mixed with LSM and GDC in a weight ratio of 50:50 to 60:40.

On the other hand, according to other embodiments of the present invention for achieving the above object of the present invention, the method for manufacturing a solid oxide fuel cell, interposed between the electrolyte and the cathode to suppress the reaction between the electrolyte and the cathode during sintering A boundary layer is formed.

In an embodiment, the boundary layer is formed of GDC, and a slurry is formed of the GDC to be laminated on the electrolyte by tape casting.

In an embodiment, the cathode may be formed of ceria (GDC) doped with manganese-based brobrosite (LSM) and gadolinium (Gd) to prevent generation of secondary reaction by-products with the electrolyte during sintering of the solid oxide fuel cell. ) Is formed with a mixed LSM / GDC cermet. The cathode is mixed with LSM and GDC in a weight ratio of 50:50 to 60:40.

On the other hand, according to another embodiment of the present invention for achieving the above object of the present invention, a method for manufacturing a solid oxide fuel cell, provides a fuel electrode, an electrolyte and an air electrode. Here, the fuel electrode, the electrolyte, and the air electrode are all formed by a tape casting method.

Then, a laminate is formed by interposing a boundary layer between the cathode and the electrolyte. Here, the laminate refers to a state in which the fuel electrode, the electrolyte, the boundary layer, and the air electrode are stacked in this order. The laminate is laminated to form a first preliminary fuel cell, and the first preliminary fuel cell is calcined at a first temperature to form a second preliminary fuel cell. Finally, the second preliminary fuel cell is sintered at a second temperature to form a fuel cell.

In an embodiment, the fuel electrode, the electrolyte and the air electrode are each formed by a tape casting method.

In an embodiment, the lamination step is pressurized with a force of 150 to 250 kgf / ㎠ while the laminate is heated to a temperature of 70 to 90 ℃. Then, the temperature and the load are maintained for about 30 minutes.

In an embodiment, the first preliminary fuel cell is calcined at 950 to 1050 ° C.

In an embodiment, the second preliminary fuel cell is sintered at 1200 to 1500 ° C. In particular, the second preliminary fuel cell is sintered by being heated to the second temperature in a pressurized state with a predetermined force. For example, the sintering step pressurizes the second preliminary fuel cell with a force of 30 to 45 kgf / cm 2.

In an embodiment, the anode is mixed NiO and YSZ in a weight ratio of 50:50 to 60:40.

In an embodiment, the cathode is a mixture of LSM and GDC in a weight ratio of 50:50 to 60:40. The boundary layer is formed of GDC.

According to the present invention, first, by improving the composition material of the cathode and by interposing a boundary layer for suppressing the reaction between the cathode and the electrolyte, the reaction by-products between the cathode and the electrolyte are prevented from being produced during the firing process. In particular, by the reaction by-products as described above it is possible to smoothly move the oxygen ions at the interface between the electrolyte and the cathode to effectively suppress the performance of the solid oxide fuel cell.

Second, even if the boundary layer sinters the electrolyte and the cathode at the same time, it is possible to sinter the fuel electrode, the electrolyte, and the cathode simultaneously because the reaction by-products are suppressed from being produced.

In addition, since the solid oxide fuel cell can be sintered simultaneously as one time, the manufacturing process of the solid oxide fuel cell can be simplified, and the time and cost required for manufacturing can be reduced.

Third, the fuel electrode, the electrolyte, and the air electrode can be simultaneously fired at once using the tape casting method, and a good appearance can be obtained. In addition, the tape casting method makes it possible to continuously manufacture the anode, the electrolyte and the cathode.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Although the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, the present invention is not limited or restricted by the embodiments.

1 is a cross-sectional view for explaining the structure of a solid oxide fuel cell according to one embodiment of the present invention. 2 is a side cross-sectional view for explaining a tape casting device for manufacturing a solid oxide fuel cell. 3 is a flowchart illustrating a method of manufacturing the solid oxide fuel cell of FIG. 1, and FIGS. 4A to 4F are cross-sectional views illustrating respective steps of the method of manufacturing the solid oxide fuel cell of FIG. 3.

Hereinafter, a method of manufacturing a solid oxide fuel cell according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4F.

For reference, the solid oxide fuel cell is formed by stacking (stacking, stacking) a unit cell composed of an anode, an electrolyte, and a cathode, and in the present embodiment, a solid oxide fuel cell. Battery means the unit cell as described above.

Referring to FIG. 1, the solid oxide fuel cell 10 has a flat plate shape in which a fuel electrode 11, an electrolyte 12, a boundary layer 13, and an air electrode 14 are sequentially stacked.

Here, the anode 11 serves as a mechanical support structure of the solid oxide fuel cell 10, and the anode 11 includes the anode support layer 11a and the anode reaction layer 11b.

In addition, the boundary layer 13 is interposed between the electrolyte 12 and the cathode 14, and a reaction by-product by the reaction between the electrolyte 12 and the cathode 14 during the sintering process of the solid oxide fuel cell. This serves to suppress the occurrence.

For example, the anode 11 is formed of a cermet (NiO / YSZ) in which yttria stabilized zirconia (Yttria Stabilized ZrO ₂ , YSZ) and nickel oxide (NiO) are mixed.

The electrolyte 12 is formed of YSZ.

And the air electrode 14 is strontium doped lanthanum manganite (hereinafter, LSM) (for _{example, La 0 .8 Sr 0 .2 MnO} 3) and La gadolinium (Gd) doped ceria (hereinafter, GDC ) (e.g., it formed of a _{Gd 0 .2 Ce 0 .8 O 2} ) the cermets (LSM / GDC mix).

The boundary layer 13 is formed of GDC.

Meanwhile, the fuel electrode 11, the electrolyte 12, and the air electrode 14 are formed by a tape casting method.

2 is a diagram illustrating a main part of a tape casting device 100 for manufacturing the solid oxide fuel cell 10.

Referring to FIG. 2, the tape casting apparatus 100 includes a hopper 103 in which the slurry 210 is accommodated, and a carrier film 105 and a roller 107 for flowing the slurry 210. And a blade 101 for adjusting the thickness of the slurry 210.

In order to form the fuel electrode 11, the electrolyte 12, and the air electrode 14, powders 211, 212 and a binder of the composition materials constituting the electrodes 11, 12, 13, and 14 are formed. Additives 213 such as plasticizers, dispersants, and solvents are mixed to form slurry 210 for the electrodes 11, 12, 13, 14. In addition, the slurry 210 is introduced into the tape casting apparatus 100 to form a sheet 220 having a predetermined thickness.

In the tape casting apparatus 100, as the carrier film 105 moves in one direction by the roller 107, the slurry 210 is attached to a predetermined thickness on the carrier film 105, and the sheet 220 is formed. ) Is formed. In particular, the thickness of the sheet 220 is determined by the distance between the blade 101 and the carrier film 105 and the moving speed of the carrier film 105.

In addition, the fuel electrode 11, the electrolyte 12, and the air electrode 14 are formed by stacking a plurality of green sheets 210 formed as described above, and the fuel electrode 11, A solid oxide fuel cell is formed by sintering a laminate in which the electrolyte 12 and the cathode 14 are sequentially stacked at a predetermined temperature.

Hereinafter, a method of manufacturing the solid oxide fuel cell will be described in detail with reference to FIGS. 3 to 4F.

First, the fuel electrode 11 serving as the support of the solid oxide fuel cell 10 is formed.

The anode 11 is formed of the anode support layer 11a and the anode reaction layer 11b, and after forming the anode support layer 11a having a predetermined thickness (S21), the anode support layer 11a is formed on the anode support layer 11a. A thickness of the anode reaction layer 11b is formed (S22).

Here, the anode support layer 11a and the anode reaction layer 11b are all formed of the same composition, for example, made of NiO and YSZ. In addition, the anode support layer 11a and the anode reaction layer 11b are formed by the above-described tape casting method.

Specifically, in order to form the anode support layer 11a, NiO, YSZ, a solvent, a binder, a plasticizer, a dispersant, and the like are mixed to form a first slurry.

For example, the first slurry is a mixture of NiO and YSZ in a weight ratio of 50:50 to 60:40.

In addition, the first slurry is formed using a tape casting apparatus to form a plurality of first sheets 111. For example, the first sheet 111 is formed to a thickness of 30 to 40 ㎛. The anode support layer 11a has a thickness of 1 to 2 mm. That is, the anode support layer 11a is formed by stacking 40 to 60 first sheets 111.

Next, the anode reaction layer 11b is formed using a tape casting method (S22). Here, the anode reaction layer 11b is formed using the same slurry as the slurry for forming the anode support layer 11a.

However, the anode reaction layer 11b is formed using the first slurry, and unlike the first sheet 111, a second sheet 112 having a thickness of 10 to 20 μm is formed.

In addition, the anode reaction layer 11b is formed to have a thickness of 10 to 50 μm, and one to five sheets of the second sheet 112 are stacked on the anode support layer 11a to form the anode reaction layer 11b. ).

Next, an electrolyte 12 is formed on the anode reaction layer 11b (S23).

The electrolyte 12 forms a second slurry by mixing a solvent, a binder, a plasticizer and a dispersant with YSZ. And, using the second slurry to form a third sheet 121 having a thickness of 5 to 15 ㎛ by a tape casting method.

Then, one to six sheets of the third sheet 121 are stacked on the anode reaction layer 11b to form the electrolyte 12 having a thickness of 5 to 30 μm.

Next, the boundary layer 13 is formed on the electrolyte 12 (S24).

The boundary layer 13 forms a third slurry by mixing a solvent, a binder, a plasticizer and a dispersant with GDC. Then, the third slurry is tape cast to form a fourth sheet 131 having a thickness of 5 to 10 μm.

Then, one to two sheets of the fourth sheet 131 are stacked on the electrolyte 12 to form the boundary layer 13 having a thickness of 5 to 10 μm.

In addition, the cathode 14 is formed on the boundary layer 13 (S25).

The cathode 14 forms a fourth slurry by mixing a solvent, a binder, a plasticizer, a dispersant, and the like with the LSM and the GDC. And, using the fourth slurry to form a fifth sheet 141 having a thickness of 10 to 30 ㎛ by a tape casting method.

The cathode 14 having a thickness of 10 to 100 μm is formed by laminating one to ten sheets of the fifth sheet 141 on the boundary layer 13.

As described above, the anode support layer 11a, the anode reaction layer 11b, the electrolyte 12, the boundary layer 13, and the cathode 14 are sequentially stacked to form a laminate 20 ( S31).

That is, according to this embodiment, it is possible to simultaneously form and stack the fuel electrode 11, the electrolyte 12, the boundary layer 13, and the air electrode 14 by using a tape casting method. Therefore, each of the poles can be formed by only one method of tape casting, thus simplifying the manufacturing process of the solid oxide fuel cell.

Meanwhile, the cathode 14 is formed of LSM and GDC, and the boundary layer 13 is formed of GDC, such as SrZrO ₃ or La ₂ Zr ₂ O ₇ between the electrolyte 12 and the cathode 14. The generation of reaction byproducts can be effectively suppressed. Therefore, due to the reaction by-products as described above, it is possible to effectively prevent the performance of the solid oxide fuel cell, and to simultaneously fire the solid oxide fuel cell at one time.

Next, the laminate 20 is laminated to form a first preliminary fuel cell (S32).

The lamination step (S32) is a step of pressing the laminate 20 at a temperature of approximately 70 to 90 ℃ with a force of 150 to 250 kgf / cm2 for a predetermined time. Preferably, the lamination process (S32) is pressed to the laminate 20 for 30 minutes at a force of 200 kgf / ㎠ at 80 ℃.

When the lamination process S32 is completed, a calcination process is performed to remove components such as a solvent, a binder, a plasticizer, and a dispersant, which are mixed in the slurry formation in the first preliminary fuel cell. By forming a second preliminary fuel cell (S33).

Here, the calcination step (S33) is a step of volatilizing and removing the volatile components included in the first preliminary fuel cell by heating the first preliminary fuel cell to a predetermined temperature, and the first preliminary fuel cell 950 to 1050. Maintain about 3 hours at a temperature of < RTI ID = 0.0 > Preferably, the calcination step (S33) is to heat the first preliminary fuel cell to a temperature of 1000 ℃ to maintain about 3 hours and to maintain at room temperature.

Here, in the calcination step (S33), when the temperature is lower than 1000 ℃ sintering efficiency is lowered, the breakage after sintering of the solid oxide fuel cell easily occurs. In addition, when the calcination temperature is higher than 1000 ° C., the solid oxide fuel cell 10 may be warped in the calcination process, resulting in poor appearance.

Next, the sintering of the second preliminary fuel cell is completed to form a solid oxide fuel cell (S34).

For example, the second preliminary fuel cell is sintered at 1200 to 1500 ° C. Preferably, the second preliminary fuel cell is sintered at 1350 ° C.

Meanwhile, in the sintering step S34, the second preliminary fuel cell is sintered by applying a predetermined force. For example, as illustrated in FIG. 4F, the second preliminary fuel cell is pressurized by arranging a predetermined pressurizer 120 having a predetermined size and weight on the second preliminary fuel cell. For example, the second preliminary fuel cell is sintered in a pressurized state with a force of 35 to 40 kgf / cm 2.

Here, the pressurizer 120 for pressurizing the second preliminary fuel cell chemically reacts with the second preliminary fuel cell, that is, the fuel electrode 11 or the air electrode 14 in a sintering process, or at a sintering temperature. It is preferable that the pressing body 120 is formed of a material which does not generate physical or chemical deformation. For example, the press body 120 corresponds to the second preliminary fuel cell, has a flat plate shape or a block shape, and is formed of zirconia ceramic.

In addition, by sintering the second preliminary fuel cell with the pressurizer 120 in the sintering step S34, the external appearance of the solid oxide fuel cell 10 may be satisfactorily sintered.

5 is a graph showing the output performance of the solid oxide fuel cell according to an embodiment of the present invention.

For reference, in Figure 5 'comparative example' is the result of measuring the performance of the solid oxide fuel cell according to the prior art, 'example' is the measurement of the performance of the solid oxide fuel cell according to an embodiment of the present invention Results are shown.

In particular, Figure 5 is to verify the effect of suppressing the performance degradation of the solid oxide fuel cell by forming the boundary layer, the output of the solid oxide fuel cell was measured under the same conditions except the presence or absence of the boundary layer. .

That is, in Examples and Comparative Examples, the anode and the electrolyte were formed in the same composition and the same thickness. However, in the embodiment, a 7 μm thick GDC boundary layer is formed between the electrolyte and the air electrode, and an air electrode made of a 50 μm thick LSM / GDC cermet (LSM: GDC = 1: 1 weight ratio) is formed. On the other hand, in the comparative example, without forming a GDC boundary layer, a cathode having a thickness of 50 μm is formed, but the cathode is formed by LSM / YSZ cermet (mixed in an LSM: YSZ = 1: 1 weight ratio).

Next, in order to measure the output performance of the solid oxide fuel cell according to the Examples and Comparative Examples, the Examples and Comparative Examples were respectively flowed at a rate of 200ml / min H2 containing 3% H2O as the anode at 800 ℃ In the air electrode, air flows at 300 ml / min. Then, after operating for 8 hours, a current was applied to each solid oxide fuel cell by using an electrical loader, and the voltage output from each solid oxide fuel cell was measured to form a current-voltage curve. .

Referring to the drawings, it can be seen that the embodiment has an output of 0.6 W / cm 2 of the solid oxide fuel cell unit cell, which is approximately 6 times or more improved than that of 0.1 W / cm 2 of the comparative example.

According to the present embodiment, it is possible to form the fuel electrode 11, the electrolyte 12, and the air electrode 14 integrally by using a tape casting method and simultaneously sinter them at once. Thus, the use of tape casting simplifies the process for producing a solid oxide fuel cell. In addition, the manufacturing cost can be effectively reduced by reducing the number of sintering steps to one.

By interposing a boundary layer 13 between the electrolyte 12 and the cathode 14, a reaction by-product having a large electrical resistance is prevented from occurring between the electrolyte 12 and the cathode 14 in the sintering process. The reaction by-products can be prevented from degrading the performance of the solid oxide fuel cell.

1 is a cross-sectional view for explaining a solid oxide fuel cell according to an embodiment of the present invention;

2 is a side view showing an example of a tape casting apparatus for explaining a method for manufacturing a solid oxide fuel cell according to an embodiment of the present invention;

3 is a flowchart illustrating a method of manufacturing a solid oxide fuel cell according to an embodiment of the present invention;

4A to 4F are cross-sectional views for explaining main steps in the method of manufacturing the solid oxide fuel cell of FIG. 3;

5 is a graph measuring output performance of a solid oxide fuel cell according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: solid oxide fuel cell 11: anode

11a: anode support layer 11b: anode reaction layer

12: electrolyte 13: boundary layer

14: air electrode 20: laminate

111, 112, 121, 131, 141: sheet

120: pressurized body

Claims (20)

A fuel electrode formed of NiO / YSZ cermet in which nickel oxide (NiO) and yttria stabilized zirconia (Yttria Stabilized ZrO ₂ , YSZ) are mixed; An electrolyte formed of YSZ and stacked on the fuel electrode; An air electrode formed of LSM / GDC cermet mixed with ceria doped with manganese-based brobrosite (LSM) and gadolinium (Gd), and stacked on the electrolyte; And An interface layer interposed between the electrolyte and the cathode to suppress a reaction between the electrolyte and the cathode; Solid oxide fuel cell comprising a. The method of claim 1, The boundary layer is a solid oxide fuel cell, characterized in that formed of GDC. The method of claim 1, The anode is a solid oxide fuel cell, characterized in that NiO and YSZ is mixed in a weight ratio of 50:50 to 60:40. The method of claim 1, The cathode is a solid oxide fuel cell, characterized in that the LSM and GDC is mixed in a weight ratio of 50:50 to 60:40. In the method of manufacturing a solid oxide fuel cell, And forming a boundary layer interposed between an electrolyte and an air electrode to suppress a reaction between the electrolyte and the air electrode during sintering. The method of claim 5, The boundary layer is formed by GDC. The method of claim 5, The boundary layer is formed by using the tape casting reaction by-products suppression method. The method of claim 5, The cathode is a reaction by-product generation suppression method characterized in that formed by the LSM / GDC cermet mixed with ceria (GDC) doped with manganese-based brobrosite (LSM) and gadolinium (Gd). The method of claim 8, The cathode is a reaction by-product generation suppression method, characterized in that the LSM and GDC is mixed in a weight ratio of 50:50 to 60:40. Providing a fuel electrode, an electrolyte, and an air electrode; Interposing a boundary layer between the cathode and the electrolyte, and stacking the fuel electrode, the electrolyte, the boundary layer, and the cathode in order to form a laminate; Laminating the laminate to form a first preliminary fuel cell; Calcining the first preliminary fuel cell at a first temperature to form a second preliminary fuel cell; And Sintering the second preliminary fuel cell at a second temperature to form a fuel cell; Solid oxide fuel cell manufacturing method comprising a. The method of claim 10, And the anode, the electrolyte, the cathode and the boundary layer are each formed by tape casting. The method of claim 10, The lamination method of producing a solid oxide fuel cell, characterized in that for heating the laminate at a temperature of 70 to 90 ℃. The method of claim 10, The lamination method of producing a solid oxide fuel cell, characterized in that for pressing the laminate with a force of 150 to 250 kgf / ㎠. The method of claim 10, The first temperature is a manufacturing method of a solid oxide fuel cell, characterized in that 950 to 1050 ℃. The method of claim 10, The second temperature is a method of manufacturing a solid oxide fuel cell, characterized in that 1200 to 1500 ℃. The method of claim 10, The sintering step is a method of manufacturing a solid oxide fuel cell, characterized in that for heating to the second temperature in the state of pressing the second preliminary fuel cell. The method of claim 16, The sintering step is a method of manufacturing a solid oxide fuel cell, characterized in that for pressurizing the second preliminary fuel cell at 30 to 45 kgf / ㎠. The method of claim 10, The anode is a method of manufacturing a solid oxide fuel cell, characterized in that NiO and YSZ is mixed in a weight ratio of 50:50 to 60:40. The method of claim 10, The cathode is a method of manufacturing a solid oxide fuel cell, characterized in that the LSM and GDC is mixed in a weight ratio of 50:50 to 60:40. The method of claim 10, And the boundary layer is formed of GDC.

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