JP2005222774A - Solid oxide fuel cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further improve power generation efficiency in a solid oxide fuel cell of a type that generates power in a mixed gas in which a fuel electrode and an air electrode are arranged on the same surface of an electrolyte.
A fuel cell according to the present invention comprises an electrolyte, a fuel electrode, and an air electrode, a plurality of electrode bodies arranged on one surface of the electrolyte, and the plurality of electrode bodies E in series. The plurality of electrode bodies E are arranged in a state where the same poles are arranged opposite to each other between adjacent electrode bodies, and accommodate the electrodes between one surface of the electrolyte 1. In addition to forming the space S and the partition member 11 for partitioning the fuel electrode 3 and the air electrode 5 in each electrode body E, the fuel gas is supplied to the space S in which the fuel electrode 3 is accommodated, while the air electrode 5 An oxidant gas such as air is supplied to the space containing the gas.
[Selection] Figure 1

Description

  The present invention relates to a solid oxide fuel cell (SOFC) using a solid electrolyte.

  Conventionally, as a cell design of a solid oxide fuel cell, a flat plate type (stack type), a cylindrical type (tube type), and the like have been proposed.

  A flat cell is one in which a fuel electrode and an air electrode are respectively arranged on the front and back surfaces of a plate-like electrolyte, and a plurality of cells formed in this way are used in a state where they are stacked via separators. The separator plays a role of completely separating the fuel gas supplied to each cell and the oxidant gas such as air, and a gas seal is provided between each cell and the separator (for example, Patent Document 1). ). However, this flat cell has a drawback that the cell is vulnerable to vibration, thermal cycle, etc. because it applies pressure to the cell to provide a gas seal, and has a big problem in practical use. Yes.

  On the other hand, a cylindrical cell has a fuel electrode and an air electrode arranged on the outer peripheral surface and inner peripheral surface of a cylindrical electrolyte, and a cylindrical vertical stripe type, a cylindrical horizontal stripe type, and the like have been proposed (for example, Patent Documents). 2). However, the cylindrical cell has an advantage of excellent gas sealing properties, but has a drawback that the manufacturing process is complicated and the manufacturing cost is high because the structure is more complicated than that of the flat plate cell.

  In addition, there are the following problems. In order to improve the performance of both the flat cell and the cylindrical cell, it is required to reduce the thickness of the electrolyte, and it is necessary to reduce the ohmic resistance of the electrolyte material, but if the electrolyte is too thin, it becomes brittle. There was a problem that the vibration resistance and durability deteriorated.

  For this reason, as a fuel cell that replaces the flat plate type and the cylindrical type described above, the fuel electrode and the air electrode are arranged on the same surface of the substrate made of solid electrolyte, and power is generated by supplying a mixed gas of fuel gas and oxidant gas A non-diaphragm solid oxide fuel cell that can be used has been proposed (for example, Patent Document 3). According to this fuel cell, since it is not necessary to separate the fuel gas and the oxidant gas, the separator and the gas seal are not required, and the structure and the manufacturing process can be greatly simplified.

In this non-membrane type solid oxide fuel cell, the conduction of oxygen ions occurs near the surface layer of the solid electrolyte, and the fuel electrode and the air electrode are formed close to each other on the same surface of the solid electrolyte. The thickness of the electrolyte does not directly affect the performance of the battery as in the case of the cylinder type. Therefore, the thickness of the electrolyte can be increased while maintaining the performance of the battery, thereby improving the vulnerability.
JP-A-5-3045 (first page, FIG. 6) Japanese Patent Laid-Open No. 5-94830 (first page, FIG. 1) JP-A-8-264195 (page 2-3, FIG. 1)

  By the way, the fuel gas and the oxidant gas act on the fuel electrode and the air electrode, respectively, thereby causing a cell reaction. In the fuel cell of Patent Document 3, the fuel gas and the oxidant gas are mixed. A mixed gas is supplied onto the electrolyte on which the electrodes are arranged. Therefore, in this type of fuel cell, since the fuel gas and the oxidant gas are diluted with each other, the efficiency of the cell reaction is not necessarily high. In addition, while the two electrodes are exposed to the same fuel gas and oxidant gas, a voltage must be generated between them, which requires the electrodes to have gas selectivity, which is a factor that hinders high efficiency. It was.

  The present invention has been made to solve the above-described problems, and aims to further improve power generation efficiency in a solid oxide fuel cell of a type in which a fuel electrode and an air electrode are arranged on the same surface of an electrolyte. And

  The first aspect of the present invention has been made to solve the above-described problem, and comprises an electrolyte, a fuel electrode and an air electrode, at least one electrode body disposed on one surface of the electrolyte, and the electrolyte. A space for accommodating the electrode between the one surface and a partition member for partitioning the fuel electrode and the air electrode, and a fuel gas is supplied to the space for accommodating the fuel electrode, The present invention provides a solid oxide fuel cell in which an oxidant gas is supplied to a space that houses an air electrode.

  According to this configuration, since the space for individually accommodating the fuel electrode and the air electrode is formed on the electrolyte, the fuel gas and the oxidant gas can be supplied to the fuel electrode side and the air electrode side, respectively. . As a result, the power generation efficiency can be improved as compared with the conventional case of supplying the mixed gas.

  In this fuel cell, a plurality of electrode bodies can be arranged on one surface of the electrolyte, and at this time, these electrode bodies are connected by an interconnector. Each electrode body may be connected in series by an interconnector, or may be connected in parallel. In the partition member, the number of partitions between each fuel electrode and air electrode is determined in accordance with the number of electrode bodies.

  At this time, it is preferable that the electrolyte is separated into a plurality at a predetermined interval, and one electrode body is disposed on each of the separated electrolytes. By doing so, it is possible to prevent the electrolyte from being present between the adjacent electrode bodies, so that the flow of oxygen ions during power generation can be blocked. As a result, cancellation of electromotive force between adjacent electrode bodies is prevented, and a stable output can be obtained.

  The second aspect of the present invention is made to solve the above-described problem, and includes an electrolyte, a fuel electrode and an air electrode, a plurality of electrode bodies disposed on one surface of the electrolyte, and the plurality of electrodes. The electrode bodies are connected in series, and the plurality of electrode bodies are arranged in a state where the same poles are arranged opposite to each other between the adjacent electrode bodies, and between the one surface of the electrolyte Forming a space for accommodating the electrode, and further comprising a partition member for partitioning between the fuel electrode and the air electrode in each electrode body, while fuel gas is supplied to the space for accommodating the fuel electrode, The present invention provides a solid oxide fuel cell in which an oxidant gas is supplied to a space that houses an air electrode.

  According to this configuration, since the fuel gas and the oxidant gas are separately supplied to the fuel electrode and the air electrode as in the first aspect of the present invention, the power generation efficiency can be improved. Further, since adjacent electrodes are arranged side by side so that the same poles face each other, there is no movement of oxygen ions between the same poles during power generation. Therefore, it is possible to prevent a reduction in the original electromotive force that should be generated in the electrode body. As a result, the total voltage of the fuel cell can be prevented from greatly decreasing, and a high power generation output can be obtained.

  Since the electrodes of the same polarity are arranged side by side by such an electrode arrangement, the number of partitions separating the fuel electrode and the air electrode should be half that of the case where every other electrode is arranged side by side. Manufacturing cost can be reduced.

  Various methods are conceivable for connecting the electrode bodies in series. For example, in the adjacent electrode bodies, the fuel electrode of one electrode body and the air electrode of the other electrode body are connected by an interconnector. There is. In this way, the wiring length of the interconnector can be shortened, so that a fuel cell can be configured at low cost.

  The partition member can be configured as follows. That is, the interconnector is formed on one surface of the electrolyte by printing, and the partition member is composed of a partition member that partitions between the fuel electrode and the air electrode, and a connecting member that connects each partition member. It can be configured to be disposed between the electrolyte and the partition member. In addition, since the interconnector is formed by printing and is very thin, even if the interconnector is sandwiched between the electrolyte and the partition member, due to the gap formed by the thickness of the interconnector between the partition member and the electrolyte, It is possible to prevent the airtightness of the space from greatly decreasing.

  Or it can also be as follows. That is, the partition member is composed of a partition member that partitions between the fuel electrode and the air electrode, and a connecting member that connects each partition member, and the partition member has an interconnector at an end facing the one surface of the electrolyte. A notch is formed through which passes. By doing so, the inside of the space can be kept airtight and gas can be reliably prevented from mixing.

  Further, in addition to forming the notch portion in the partition member as described above, for example, a groove portion through which the interconnector passes can be formed at a position facing the partition member on one surface of the electrolyte. The effect of can be obtained.

  A substrate that supports the electrolyte can also be provided. In this way, high durability against vibration and thermal cycle can be maintained even if the electrolyte is made thin. In particular, in the fuel cell according to the present invention, the portion that contributes to the cell reaction is mainly near the surface layer of the electrolyte. Therefore, it is possible to make the electrolyte thin by using a substrate. For example, the electrolyte is formed by printing. However, the battery performance is not affected.

  According to the solid oxide fuel cell according to the present invention, high power generation output can be obtained.

  Hereinafter, an embodiment of a solid oxide fuel cell according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of a fuel cell according to the present embodiment, and FIG. 2 is a view taken along line AA in FIG.

As shown in FIGS. 1 and 2, this fuel cell includes an electrolyte 1 formed in a rectangular plate shape, and a plurality of electrode bodies E each including a fuel electrode 3 and an air electrode 5 and disposed on one surface of the electrolyte 1. (Here, five electrode bodies E _{1 to} E ₅ are indicated), and these electrode bodies E are connected in series by an interconnector 7. A partition wall member 11 is provided on one surface of the electrolyte 1 to form a space for supplying an oxidant gas such as fuel gas or air to the electrodes 3 and 5.

The fuel electrode 3 and the air electrode 5 of each electrode body E are formed in a band shape and are arranged at a predetermined interval. At this time, the distance between the fuel electrode 3 and the air electrode 5 is preferably, for example, 1 to 1000 μm, and more preferably 10 to 500 μm. The plurality of electrode bodies E are arranged in one direction (the left-right direction in FIG. 2) from one end to the other end of the electrolyte 1, and the arrangement positions of the fuel electrode 3 and the air electrode 5 are opposite in the adjacent electrode bodies E. ing. That is, in this embodiment, the electrode bodies E ₁ , E ₃ , E ₅ have the fuel electrode 3 arranged on the left side in FIG. 2 and the air electrode 5 arranged on the right side. On the other hand, in the electrode bodies E ₂ and E ₄ disposed between these electrode bodies, the air electrode 5 is disposed on the left side and the fuel electrode 5 is disposed on the right side. Thus, since the arrangement positions of the fuel electrode 3 and the air electrode 5 are opposite between the adjacent electrode bodies E, between the adjacent electrode bodies E, the same poles, that is, the fuel electrode 3 or the air electrodes 5 are mutually connected. Are arranged opposite to each other. At this time, the interval between the adjacent electrode bodies E is preferably 10 to 5000 μm, for example, and more preferably 1000 to 3000 μm. In addition, current collectors 9 for taking out current are formed at two corners (upper left and lower right in FIG. 2) opposite to each other on the diagonal line of the electrolyte 1.

And these electrode bodies E are connected in series as follows. As shown in FIG. 2, in the adjacent electrode body E, the fuel electrode 3 or the air electrode 5 of one electrode body E and the air electrode 5 of the other electrode body E disposed with the same electrode opposite to the fuel electrode 3 or the air electrode 5 interposed therebetween. Alternatively, the fuel electrode 3 is connected to the interconnector 7. That is, every other electrode is connected by the interconnector 7. For example, in the electrode bodies E ₁ and E ₂ , the air electrode 5 on the right side of the electrode body E ₁ and the fuel electrode 3 on the right side of the electrode body E ₂ are connected. At this time, the interconnector 7 connects one end portions of the air electrode 5 and the fuel electrode 3 (upper end side in FIG. 2) or the other end portions (lower end side in FIG. 2). In addition, in order to prevent the interconnectors 7 from crossing each other, when certain electrode bodies E are connected to each other at one end portion of the electrodes, the adjacent electrode bodies are connected to each other at the other end portion of the electrodes. The For example, as shown in FIG. 2, the electrode body E ₁ and the electrode body E ₂ are connected at the other end of the electrode (the lower side in FIG. 2), but the electrode body E ₂ and the electrode body E ₃ are The electrodes are connected at one end (upper part in FIG. 2).

  The partition member 11 is configured as follows. That is, as shown in FIG. 1, the partition member 11 is made of an insulating material, and includes a partition member 11 a that partitions the fuel electrode 3 and the air electrode 5 in each electrode body E, and each partition member 11 a. And a lid member (connecting member) 11b for connecting the upper end portions. The partition member 11 a extends on the electrolyte 1 along the electrodes 3 and 5, and is formed higher than the electrodes 3 and 5. And in this example, the six space S which each accommodates a pair of adjacent fuel electrode 3 or the air electrode 5 by the five partition members 11a and the cover member 11b is formed. Note that the second partition member 11a from the right and the second partition member 11a from the left each intersect with the interconnector 7. This will be described with reference to FIG. 3 is a view taken in the direction of arrows BB in FIG. As shown in the figure, at the lower end of the partition member 11a, two notches 12 are formed, and the notch 12 and the surface of the electrolyte 1 form a passage through which the interconnector 7 passes. Yes. The shape of the notch 12 is the same as the cross-sectional shape of the interconnector 7, whereby the notch 12 and the interconnector 7 are in close contact with each other, and each space S is kept airtight.

Next, the material of the fuel cell configured as described above will be described. As the material of the electrolyte 1, those known as electrolytes for solid oxide fuel cells can be used. For example, ceria-based oxides such as (Ce, Sm) O ₃ , (Ce, Gd) O ₃ , ( Oxygen ion conductive ceramic materials such as La, Sr) (Ga, Mg) O _{3 and} other lanthanum galade oxides, scandium stabilized zirconia (ScSZ), yttria stabilized zirconia (YSZ) and other zirconia oxides Can be used. Since the electrolyte 1 is used as a substrate and needs a certain level of strength, the thickness is preferably, for example, 200 to 1000 μm.

  The fuel electrode 3 and the air electrode 5 can be formed of a ceramic powder material. The average particle size of the powder used at this time is preferably 10 nm to 100 μm, more preferably 50 nm to 50 μm, and particularly preferably 100 nm to 10 μm. In addition, an average particle diameter can be measured according to JISZ8901, for example.

As the ceramic powder material forming the fuel electrode 3, for example, a mixture of nickel and an oxygen ion conductive material can be used. Examples of the oxygen ion conductive material used at this time include ceria-based oxides such as (Ce, Sm) O ₃ and (Ce, Gd) O ₃ and lanthanum such as (La, Sr) (Ga, Mg) O _3. Oxygen ion conductive ceramic materials such as galide oxides, zirconia oxides such as scandium stabilized zirconia (ScSZ) and yttria stabilized zirconia (YSZ) can be mentioned. It is preferable to form the fuel electrode 5 with a mixture of the above. Among these, it is particularly preferable to form the fuel electrode 5 with a cermet of nickel-ceria-based oxide. The mixed form of the oxygen ion conductive ceramic material and nickel may be a physical mixed form or a form of powder modification to nickel. Moreover, the ceramic material mentioned above can be used individually by 1 type or in mixture of 2 or more types.

As the ceramic powder material forming the air electrode 5, for example, a perovskite metal oxide can be used. Specifically, (Sm, Sr) CoO ₃ , (La, Sr) MnO ₃ , (La, Sr) CoO ₃ , (La, Sr) (Fe, Co) O ₃ , (La, Sr) (Fe, Co , Ni) O _{3 and the} like. These ceramic powders can be used singly or in combination of two or more.

Further, the interconnector 7 and the current collector 9 include Pt, Au, Ag, Ni, Cu, SUS, La (Cr, Mg) O ₃ , (La, Ca) CrO ₃ , (La, Sr) CrO _3, or the like. These lanthanum and chromite-based conductive ceramic materials can be used, and one of these may be used alone, or two or more may be used in combination.

  The partition member 11 can be made of a ceramic material such as alumina or silica, and is preferably formed of a material having heat resistance of 300 ° C. or higher.

  The fuel electrode 3 and the air electrode 5 are formed by adding the appropriate amount of varnish, organic solvent, etc. with the above-described materials as the main components. The film thicknesses of the fuel electrode 3 and the air electrode 5 are formed so as to be 1 μm to 500 μm after sintering, but preferably 10 μm to 100 μm. The interconnector 7 and the current collector 9 are also formed by adding the above additives to the above-described materials.

Next, an example of a method for manufacturing the above-described fuel cell will be described. First, the plate electrolyte 1 made of the above-described material is prepared. Subsequently, the powder material for the fuel electrode 3 and the air electrode 5 described above is used as a main component, and an appropriate amount of varnish, photosensitive polymer, organic solvent, etc. is added to each of them and kneaded to prepare a fuel electrode paste and an air electrode paste. Create each one. The viscosity of each paste is preferably about 10 ³ to 10 ⁶ Pa · s so as to be compatible with the screen printing method described below. Similarly, the interconnector paste is prepared by adding an additive such as varnish to the above-described powder material. The viscosity of this paste is the same as that of the fuel electrode paste described above.

  Subsequently, a fuel electrode paste is applied in a strip shape by screen printing at a plurality of positions on the electrolyte 1 as shown in FIG. 1, and then dried and sintered at a predetermined time and temperature to form the fuel electrode 3. . Next, as shown in FIG. 1, an air electrode paste is applied to each position facing the fuel electrode 3 on each electrolyte 1 by a screen printing method, and dried and sintered at a predetermined time and temperature, so that the air electrode 5 is formed. In this way, eight electrode bodies E are formed. And after forming the electrical power collector 9 in the corner | angular part of the electrolyte 1, the interconnector paste is apply | coated to the position shown in FIG.

  Next, between the fuel electrode 3 and the air electrode 5 in each electrode body E, the pasted partition member material is applied by screen printing to form the partition member 11a. Following this, a plate-like lid member 11b is arranged so as to abut on the upper end of each partition member 11a via a glass seal. By doing so, six spaces S for individually accommodating the electrodes 3 and 5 are formed on the electrolyte 1. Through the above steps, a fuel cell as shown in FIGS. 1 and 2 is completed. In addition, as a glass seal | sticker, what added a suitable quantity binder (for example, polyvinyl butyral binder) and a solvent (for example, ethanol, toluene) to a glass-type material can be used, for example. In addition to the glass-based material, the sealing material can also be configured using a ceramic-based material or a metal-based material.

  The fuel cell configured as described above generates power as follows. That is, the fuel gas containing hydrogen or hydrocarbons, such as methane and ethane, is supplied to the space S that accommodates the fuel electrode 3 on the electrolyte 1. On the other hand, an oxidant gas such as air or ozone is supplied to the space S in which the air electrode 5 is accommodated. These gases are supplied in a high temperature state (for example, 400 to 1000 ° C.). Thereby, oxygen ion conduction occurs near the surface layer of the electrolyte 1 between the fuel electrode 3 and the air electrode 5 in each electrode body E, and electric power generation is performed.

  As described above, in the fuel cell according to the present embodiment, since the space S for individually accommodating the fuel electrode 3 and the air electrode 5 is formed on the electrolyte 1, the fuel gas and the oxidizing gas such as air are used. It can supply in the state isolate | separated to the fuel electrode 3 side and the air electrode 5 side. As a result, the power generation efficiency can be improved as compared with the conventional case of supplying the mixed gas.

  There are also the following advantages. In the fuel cell described above, the adjacent electrode bodies E are arranged so that the same poles face each other. Therefore, there is no movement of oxygen ions between the same poles during power generation. Therefore, unlike the conventional example, it is possible to prevent the original electromotive force generated in the electrode body E from being canceled. As a result, the total voltage of the fuel cell can be prevented from greatly decreasing, and a high power generation output can be obtained.

  Furthermore, since the electrodes of the same polarity are arranged side by side by such an arrangement of electrodes, the number of partitions separating the fuel electrode 3 and the air electrode 5 is such that both electrodes 3 and 5 are arranged every other electrode. Thus, the manufacturing cost can be reduced.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, A various change is possible unless it deviates from the meaning. For example, in the above-described embodiment, the cutout portion through which the interconnector passes is formed at the lower end of the partition member, but other configurations may be used. That is, as shown in FIG. 4 (a), if the groove 13 is formed on the surface of the electrolyte 1, the interconnector 7 is filled in the groove 13, and then the partition member 11a is disposed above the groove 13, the space S is formed. It can be airtight. Moreover, as shown in FIG.4 (b), the interconnector 7 can be formed in the upper surface of the electrolyte 1, and the partition member 11a can also be arrange | positioned on the upper surface. In this case, a gap t is formed between the electrolyte 1 and the partition member 11a by the interconnector 7, but when the interconnector 7 is formed by printing, the thickness thereof is several μm. The influence on airtightness can be reduced.

  Moreover, in the said embodiment, after forming the partition member 11a on the electrolyte 1, the cover member 11b is arrange | positioned on the upper surface, However It can also be as follows. That is, as shown in FIG. 5, a partition member 11 in which a partition member 11 a is formed in advance on the lower surface of the lid member 11 b may be prepared in advance, and the partition member 11 may be disposed on the electrolyte 1. In this case, the partition member 11 can be formed as follows. For example, a plate-like material is prepared and processed using a sandblast method, a lithography method, or the like to form a recess corresponding to the space, and this is used as the partition member 11.

  In the above-described embodiment, every other electrode is connected to connect the electrode bodies E with the interconnector 7, but the present invention is not limited to this. As long as the electrode bodies E are connected in series, for example, they can be connected as shown in FIG. However, from the viewpoint of shortening the wiring length of the interconnector 7, it is preferable to use the connection method shown in FIG.

  In the above embodiment, the screen printing method is used for applying each paste, but is not limited thereto, doctor blade method, spray coating method, lithography method, electrophoretic electrodeposition method, gravure coating method, Other general printing methods such as a roll coating method, a dispenser coating method, a printing method such as CVD, EVD, sputtering, and a transfer method can be used. Moreover, as a post-process after printing, a hydrostatic press, a hydraulic press, and other general press processes can be used.

  In the above embodiment, a plate-like electrolyte is used. However, a substrate may be disposed on the other surface of the electrolyte, and each electrolyte may be supported by this substrate. By doing so, even if the electrolyte 1 is thinned, the fuel cell can be prevented from becoming weak. The substrate used at this time can be made of, for example, a ceramic material such as alumina, silica, or titanium, or SUS. In addition, the electrolyte can be formed on the substrate after being thinned by printing.

  In addition, the interconnector can have various configurations other than the above-described printed film, for example, the electrodes can be connected to each other by a wire, and the above material is formed into a mesh shape. You can also

  Furthermore, in the above embodiment, the electrode body is arranged as shown in FIG. 2, but the present invention is not limited to this, and every other fuel electrode and air electrode may be arranged. That is, as shown in FIG. 7, the electrode body E can be disposed so that the different poles are adjacent to each other, and the partition member 11 a can be disposed between the electrodes 3 and 5. If the fuel gas is introduced into the space S in which the fuel electrode 3 is accommodated and the oxidant gas is introduced into the space S in which the air electrode 5 is accommodated, the above-described effects can be obtained.

  In this case, since the different polarities are arranged between the adjacent electrode bodies E, the original electromotive force generated in the electrode bodies E may be offset. For example, as shown in FIG. 8, the electrolyte 1 may be separated into a plurality of pieces and arranged on the substrate 2 at a predetermined interval. Then, one electrode body E is arranged on each separated electrolyte 1. Further, between the adjacent electrode bodies E, the interconnector 7 is disposed and connected so as to pass over the substrate 2. By doing so, since there is no electrolyte between the adjacent electrode bodies E, the flow of oxygen ions during power generation can be blocked. As a result, it is possible to prevent the electromotive force from being canceled, and a stable output can be obtained. The electrolyte 1 can be formed on the substrate 2 by printing as described above. Alternatively, the plate-like electrolyte 1 may be divided and arranged at a predetermined interval.

1 is a front view of an embodiment of a solid oxide fuel cell according to the present invention. It is an AA arrow line view of FIG. It is a BB line arrow directional view of FIG. It is a figure which shows the other example of a partition member. It is a figure which shows the other example of a partition member. It is a top view which shows the other example of the fuel cell shown in FIG. FIG. 6 is a plan view showing still another example of the fuel cell shown in FIG. 1. FIG. 6 is a front view showing still another example of the fuel cell shown in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrolyte 3 Fuel electrode 5 Air electrode 7 Interconnector 11 Partition member 11a Partition member 11b Cover member (connection member)

Claims (9)

Electrolyte,
At least one electrode body comprising a fuel electrode and an air electrode and disposed on one surface of the electrolyte;
A space for accommodating the electrode between the one surface of the electrolyte and a partition member for partitioning the fuel electrode and the air electrode;
A solid oxide fuel cell in which a fuel gas is supplied to a space containing the fuel electrode, and an oxidant gas is supplied to a space containing the air electrode.   2. The solid oxide fuel cell according to claim 1, further comprising an interconnector that includes a plurality of electrode bodies arranged on one surface of the electrolyte and that connects the electrode bodies.   3. The solid according to claim 2, wherein the electrolyte is disposed in a state of being separated into a plurality at predetermined intervals, and each of the electrode bodies is disposed on each of the separated electrolytes. Oxide fuel cell. Electrolyte,
A plurality of electrode bodies composed of a fuel electrode and an air electrode and disposed on one surface of the electrolyte;
An interconnector for connecting the plurality of electrode bodies in series;
The plurality of electrode bodies are arranged in a state where the same poles are arranged opposite to each other between the adjacent electrode bodies,
A partition member for forming a space for accommodating the electrode between the one surface of the electrolyte and partitioning the fuel electrode and the air electrode in each electrode body is further provided,
A solid oxide fuel cell in which a fuel gas is supplied to a space containing the fuel electrode, and an oxidant gas is supplied to a space containing the air electrode.   5. The solid oxide fuel cell according to claim 4, wherein in the adjacent electrode bodies, a fuel electrode of one electrode body and an air electrode of the other electrode body are connected by the interconnector. The interconnector is formed on one surface of the electrolyte by printing,
The partition member includes a partition member that partitions the fuel electrode and the air electrode, and a connecting member that connects the partition members,
6. The solid oxide fuel cell according to claim 2, wherein the interconnector is disposed between the electrolyte and the partition member. The partition member includes a partition member that partitions the fuel electrode and the air electrode, and a connecting member that connects the partition members,
6. The solid oxide fuel cell according to claim 2, wherein the partition member includes a notch through which the interconnector passes, at an end facing the one surface of the electrolyte. 7. The partition member includes a partition member that partitions the fuel electrode and the air electrode, and a connecting member that connects the partition members,
6. The solid oxide fuel cell according to claim 3, wherein a groove portion through which the interconnector passes is formed on one surface of the electrolyte at a position facing the partition member.   The solid oxide fuel cell according to any one of claims 1 to 8, further comprising a substrate made of a ceramic material that supports the electrolyte.

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