Supporting solid oxide single cell and its preparation method and application

Abstract

The present application relates to a kind of supporting type solid oxide single cell and its preparation method and application.Single cell includes support and multiple sub-cell units, at least one side of sub-cell unit is provided with support, multiple sub-cell units are spaced distribution, support is provided with multiple for gas passing through ventilation area spaced distribution, the ventilation area is one-to-one with sub-cell unit, and sub-cell unit covers in ventilation area.In the single cell, by the cooperation of multiple sub-cell units and support, multiple sub-cell units can be integrated on support, to form the solid oxide single cell of multiple small size sub-cell units with large size, preferably avoid the problem that stress remains easily occurs in battery due to the increase of size, and then can maintain the stability of battery in the case of increasing battery size.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid oxide cell, in particular to a supported solid oxide cell and a preparation method and application thereof. BACKGROUND

[0002] Solid oxide cell is a kind of energy conversion device with good application prospect, which can be used to generate electricity by using fuel including hydrogen, and can be used to electrolyze water or CO2 to produce hydrogen or carbon-based fuel. With the increase of the size of the single cell, the area of the electrode and the electrolyte and other components increases, which can provide better electrical performance. However, the increase of the size makes the cell prone to stress residual, which affects the stability of the cell. SUMMARY

[0003] Therefore, it is necessary to provide a supported solid oxide cell and a preparation method and application thereof. By designing the structure of the solid oxide cell, the stress residual of the cell is effectively reduced, and the cell has good stability and large size.

[0004] In order to solve the above technical problems, the technical scheme of an embodiment of the present application is as follows:

[0005] A supported solid oxide cell comprises a support and a plurality of sub-cell units. The support is provided with a plurality of spaced-apart air passage zones, which are used for the gas to pass through the support. At least one side of the sub-cell unit is provided with the support, and the plurality of sub-cell units correspond to the plurality of air passage zones one by one, and the sub-cell unit covers the air passage zone.

[0006] In a specific embodiment, the support is provided with an air flow channel. The air flow channel is in communication with the plurality of air passage zones, and the air flow channel penetrates the surface of the support away from the sub-cell unit.

[0007] In a specific embodiment, the supported solid oxide cell further comprises a flow guide, which is located on the surface of the support away from the sub-cell unit. The flow guide is provided with a flow guide channel, which is in communication with the air passage zone for guiding the gas into the air passage zone.

[0008] In a specific embodiment, the support is an electrically conductive support.

[0009] In a specific embodiment, the thickness of the support is 0.1mm-5mm.

[0010] In one specific embodiment, the sub-cell unit comprises an air electrode layer, an electrolyte layer and a fuel electrode layer which are sequentially stacked; the air electrode layer or the fuel electrode layer covers the air passage region.

[0011] In one specific embodiment, the air electrode layer has a thickness of 0.1 μm to 100 μm.

[0012] In one specific embodiment, the electrolyte layer has a thickness of 0.1 μm to 100 μm.

[0013] In one specific embodiment, the fuel electrode layer has a thickness of 0.1 μm to 100 μm.

[0014] In one specific embodiment, the air electrode layer covers the air passage region, and the electrolyte layer extends to cover the side wall of the air electrode layer.

[0015] In one specific embodiment, the fuel electrode layer covers the air passage region, and the electrolyte layer extends to cover the side wall of the fuel electrode layer.

[0016] A method for preparing a support type solid oxide single cell, comprising the following steps:

[0017] Porous treatment is performed on the support to form a plurality of air passage regions which are spaced apart on the support;

[0018] A plurality of sub-cell units which are spaced apart are prepared on the surface of the support, and each of the sub-cell units covers a corresponding air passage region.

[0019] A battery comprising a housing and the support type solid oxide single cell as described in any of the above embodiments, wherein the support type solid oxide single cell is accommodated in the housing.

[0020] An energy conversion device comprising the support type solid oxide single cell or the battery as described in any of the above embodiments. The support type solid oxide single cell comprises a support and a plurality of sub-cell units. In the single cell, the sub-cell units cover the air passage regions to prevent gas from entering the gaps between the sub-cell units through the air passage regions, thereby avoiding short circuit of the sub-cell units and maintaining normal operation of the sub-cell units. In the above single cell, the plurality of sub-cell units are integrated on the support through cooperation of the sub-cell units and the support, so that a large solid oxide single cell is formed by a plurality of small sub-cell units, thereby avoiding stress residue of the battery due to increase in size, and maintaining stability of the battery while increasing the size of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A schematic view of a structure of a support type solid oxide single cell in an embodiment of the present application;

[0022] Figure 2 A schematic view of a structure of a support type solid oxide single cell in an embodiment of the present application; Figure 1 A sectional view of a corresponding support type solid oxide single cell in A-A direction;

[0023] Figure 3 A schematic view of a structure of a support type solid oxide single cell in an embodiment of the present application;

[0024] Figure 4 A schematic view of a structure of a support type solid oxide single cell in an embodiment of the present application;

[0025] Figure 5 A schematic view of a structure of a support type solid oxide single cell in an embodiment of the present application.

[0026] Marking in the figure:

[0027] 10, support; 101, air passage area; 102, air flow channel; 20, sub-cell unit; 201, fuel electrode layer; 202, electrolyte layer; 203, air electrode layer; 30, flow guide; 301, flow guide channel. DETAILED DESCRIPTION

[0028] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It should be noted that the specific embodiments of the present application do not limit the scope of the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second", "third", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or an ordered sequence. Thus, features defined with "first", "second" or "third" can include at least one of the features. In the description of the application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a support type solid oxide single cell. The support type solid oxide single cell comprises a support 10 and a plurality of sub-cell units 20; the support 10 is provided with a plurality of spaced distribution air passage areas 101, the air passage areas 101 are used for gas to pass through the support 10; at least one side of the sub-cell unit 20 is provided with the support 10, the plurality of sub-cell units 20 correspond to the plurality of air passage areas 101 one by one, and the sub-cell unit 20 covers the air passage area 101. In the single cell, by arranging the spaced distribution sub-cell units 20 and the air passage areas 101, the sub-cell unit 20 covers the air passage area 101 to prevent the gas from entering the gap between the plurality of sub-cell units 20 from the air passage area 101, thereby avoiding the short circuit of the sub-cell unit 20 and maintaining the normal operation of each sub-cell unit 20. In the above single cell, by cooperating the plurality of sub-cell units 20 with the support 10, the plurality of sub-cell units 20 can be integrated on the support 10, so that the plurality of small size sub-cell units 20 form a solid oxide single cell with large size, which can better avoid the problem that the stress residue of the cell is prone to occur due to the increase of the size, thereby maintaining the stability of the cell under the condition of increasing the size of the cell.

[0034] It should be noted that the at least one side of the sub-cell unit 20 is provided with the support 10, which means that the support 10 can be arranged on any side of the sub-cell unit 20, or the support 10 can be arranged on both sides of the sub-cell unit 20. The at least one side of the sub-cell unit 20 means the air electrode side or the fuel electrode side of the sub-cell unit 20. At this time, the at least one side of the sub-cell unit 20 is provided with the support 10, which means that the air electrode side and / or the fuel electrode side of the sub-cell unit 20 is provided with the support 10. That is, the air electrode side of the sub-cell unit 20 is provided with the support 10, or the fuel electrode side of the sub-cell unit 20 is provided with the support 10, or the air electrode side and the fuel electrode side of the sub-cell unit 20 are both provided with the support 10.

[0035] It can be understood that the support 10 is provided with the ventilation area 101, and the gas can pass through the support 10 through the ventilation area 101, thereby providing the gas for the air electrode or the fuel electrode of the sub-cell unit 20.

[0036] It can also be understood that the ventilation area 101 penetrates the surface of the support 10 away from the sub-cell unit 20. At this time, the gas can pass through the support 10 through the surface of the support 10 away from the sub-cell unit 20, thereby providing the gas for the electrochemical reaction of the sub-cell unit 20.

[0037] It can also be understood that, in the embodiment shown in Figure 1 In the embodiment shown in

[0038] In the embodiment shown in Figure 1 The number of sub-cell units 20 is 12, and in order to make the plurality of sub-cell units 20 show better regularity, the 12 sub-cell units 20 are arranged in a 3x4 matrix. It can be understood that the sub-cell units 20 can also be other numbers of display, for example, the number of sub-cell units 20 can be but not limited to 6-30, at this time the number of sub-cell units 20 can be 6, 7, 8, 10, 15, 18, 20, 25, 30, etc. Of course, the number of sub-cell units 20 can also be other suitable choices according to the electrical performance of the single cell and the processing technology, etc. In addition, the arrangement mode of the sub-cell unit 20 can also be other ways of arrangement according to the design requirements of the single cell, such as matrix distribution, ring distribution, etc.

[0039] In one specific example, the sub-cell unit 20 comprises an air electrode layer 203, an electrolyte layer 202 and a fuel electrode layer 201 which are sequentially stacked; the air electrode layer 203 or the fuel electrode layer 201 covers the air passage 101.

[0040] In Figure 1 In the illustrated embodiment, the number of the support 10 is one, and the support 10 is located at one side of the sub-cell unit 20, and the other side of the sub-cell unit 20 is not provided with the support 10.

[0041] Further, please refer to Figure 2 , the fuel electrode layer 201 contacts the support 10 and covers the air passage 101. At this time, the support 10 can be provided only on the side of the fuel electrode layer 201, and the support 10 is not provided on the side of the air electrode layer 203. In this way, the support 10 is provided on the side of the fuel electrode layer 201, and the air passage 101 on the support 10 can be used as a channel for the fuel gas, thereby providing the fuel electrode layer 201 with the gaseous fuel.

[0042] Please refer to Figure 3 , in another embodiment of the present application, the support 10 is provided with an airflow channel 102; the airflow channel 102 is in communication with the plurality of air passages 101, and the airflow channel 102 penetrates the surface of the support 10 away from the sub-cell unit 20. By providing the airflow channel 102, the plurality of air passages 101 can be connected in communication, thereby improving the gas supply efficiency. For example, when the fuel electrode layer 201 of the sub-cell unit 20 contacts the support 10 and covers the air passage 101 on the support 10, the provision of the airflow channel 102 can improve the gas supply efficiency of the gaseous fuel and improve the electrical performance of the support-type solid oxide single cell.

[0043] Please refer to Figure 4 , in another embodiment of the present application, the support-type solid oxide single cell further comprises a flow guide 30, the flow guide 30 is located on the surface of the support 10 away from the sub-cell unit 20, and the flow guide 30 is provided with a flow guide channel 301, the flow guide channel 301 is in communication with the air passage 101 for guiding the gas into the air passage 101. By providing the flow guide 30, the gas supply efficiency can be further improved. Further, in other embodiments, the flow guide channel 301 on the flow guide 30 is in communication with the airflow channel 102 inside the support 10.

[0044] Please refer to Figure 5In another embodiment of the present application, the support type solid oxide single cell comprises two supports 10, which are respectively located at two sides of the sub-cell unit 20. Further, the two supports 10 are respectively located at the air electrode side and the fuel electrode side of the sub-cell unit 20. Still further, the two supports 10 are respectively in contact with the air electrode layer 203 and the fuel electrode layer 201 of the sub-cell unit 20, and the air electrode layer 203 and the fuel electrode layer 201 of the sub-cell unit 20 respectively cover the air passage areas 101 on the two supports 10.

[0045] In a specific example, the two supports 10 have the same structure. That is, the two supports 10 are respectively provided with a plurality of spaced air passage areas 101, and the two supports 10 are respectively provided with air flow channels 102, each of which is in communication with the air passage areas 101 on the support 10 and penetrates through the surface of the support 10 away from the sub-cell unit 20.

[0046] Further, referring again to Figure 5 The surface of each of the two supports 10 away from the sub-cell unit 20 is provided with a flow guide 30, which is provided with a flow guide channel 301 in communication with the air passage areas 101 for guiding the gas into the air passage areas 101. It can be understood that the flow guide 30 can be provided only on the surface of one of the two supports 10 away from the sub-cell unit 20.

[0047] In a specific example, the support type solid oxide single cell further comprises a protective layer (not shown in the figure) covering at least one surface of the support 10. The protective layer can be provided to protect the support 10 from oxidation and adversely affect the performance of the single cell. Further, the protective layer covers the entire surface of the support 10, that is, the protective layer covers the entire support 10 to maintain the stability of the support 10. Alternatively, the protective layer is a metal protective layer. It should be noted that the thickness of the protective layer is small, and after the protective layer is provided on the surface of the support 10, the gas can still pass through the support 10 through the air passage areas 101 to contact the sub-cell unit 20.

[0048] In one specific example, as the selection of the support 10, the support 10 is an electrically conductive support. Optionally, the support 10 is a metal support or an electrically conductive ceramic support. Further optionally, the support 10 is a stainless steel support, in which case the support 10 is made of stainless steel. In particular, the thickness of the support 10 is 0.1 mm to 5 mm. For example, the thickness of the support 10 can be, but is not limited to, 0.1 mm, 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm, etc. The thickness of the protective layer is 1 μm to 10 μm. For example, the thickness of the protective layer can be, but is not limited to, 1 μm, 2 μm, 5 μm, 8 μm, or 10 μm, etc.

[0049] In some embodiments of the present application, the thickness of the air electrode layer 203 is 0.1 μm to 100 μm. For example, the thickness of the air electrode layer 203 can be, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm, etc. The thickness of the electrolyte layer 202 is 0.1 μm to 100 μm. For example, the thickness of the electrolyte layer 202 can be, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm, etc. The thickness of the fuel electrode layer 201 is 0.1 μm to 100 μm. For example, the thickness of the fuel electrode layer 201 can be, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm, etc.

[0050] In one specific example, the air electrode layer 203 comprises an electronically conductive phase and an ionically conductive phase. Optionally, the mass ratio of the electronically conductive phase and the ionically conductive phase is (3:7) to (8:2). Optionally, the mass ratio of the electronically conductive phase and the ionically conductive phase is 1:1. Further, the mass percentage ratio of the electronically conductive phase and the ionically conductive phase, in terms of the mass percentage of the air electrode layer 203, is (30%:70%) to (80%:20%). Still further, the mass percentage ratio of the electronically conductive phase and the ionically conductive phase, in terms of the mass percentage of the air electrode layer 203, is 50%:50%.

[0051] In one specific example, the air electrode layer 203 covers the air passage region 101, and the electrolyte layer 202 extends to the side wall covering the air electrode layer 203. Optionally, the electrolyte layer 202 extends to the surface of the support 10.

[0052] Please refer again toFigure 2 In another specific example, the fuel electrode layer 201 covers the air passage 101, and the electrolyte layer 202 extends to the side wall covering the fuel electrode layer 201. Optionally, the electrolyte layer 202 extends to the surface of the support 10.

[0053] As a selection of the electron conductive phase, the electron conductive phase includes at least one of lanthanum strontium cobalt iron conductive phase, lanthanum strontium cobalt conductive phase, lanthanum strontium manganese conductive phase, lanthanum nickel copper conductive phase, strontium iron molybdenum nickel conductive phase, and strontium iron molybdenum conductive phase. Further, the material of the electron conductive phase includes at least one of lanthanum strontium cobalt iron, lanthanum strontium cobalt, lanthanum strontium manganese, lanthanum nickel copper, strontium iron molybdenum nickel, and strontium iron molybdenum.

[0054] As a selection of the ion conductive phase, the ion conductive phase includes at least one of yttrium stabilized zirconia, scandium stabilized zirconia, gadolinium doped ceria, samarium doped ceria, lanthanum doped ceria, lanthanum strontium gallate magnesium, and barium zirconium cerium yttrium. Further, the material of the ion conductive phase includes at least one of yttrium stabilized zirconia, scandium stabilized zirconia, gadolinium doped ceria, samarium doped ceria, lanthanum doped ceria, lanthanum strontium gallate magnesium, and barium zirconium cerium yttrium.

[0055] In one specific example, the fuel electrode layer 201 is a composite cermet layer. Specifically, the composite cermet layer includes a composite nickel oxide-ceramic material, in which the mass ratio of the nickel oxide and the ceramic material is (2:8)~(7:3). Preferably, it is 6:4. Further, the mass percentage ratio of the nickel oxide and the ceramic material is (20%:80%)~(70%:30%) in terms of the mass percentage of the fuel electrode layer 201. Still further, the mass percentage ratio of the nickel oxide and the ceramic material is 50%:50% in terms of the mass percentage of the fuel electrode layer 201. Specifically, the material of the fuel electrode layer 201 includes at least one of nickel oxide-yttrium stabilized zirconia, nickel oxide-scandium stabilized zirconia, nickel oxide-gadolinium doped ceria, nickel oxide-samarium doped ceria, nickel oxide-lanthanum doped ceria, nickel oxide-lanthanum strontium gallate magnesium, and nickel oxide-barium zirconium cerium yttrium.

[0056] In one specific example, the electrolyte layer 202 is a doped zirconia layer or a doped ceria layer. Further, the material of the electrolyte layer 202 includes at least one of yttrium stabilized zirconia, scandium stabilized zirconia, gadolinium doped ceria, samarium doped ceria, and lanthanum doped ceria. Further, the material of the electrolyte layer 202 further includes a sintering aid, in which the mass percentage of the sintering aid is 0.2%~5% in terms of the mass percentage of the electrolyte layer 202. Preferably, it is 2%. Optionally, the sintering aid includes at least one of copper oxide, bismuth oxide, lithium oxide, and cobalt oxide.

[0057] The application also provides a battery. The battery includes a housing and the above-mentioned support type solid oxide single cell, and the support type solid oxide single cell is accommodated in the housing.

[0058] The application also provides an energy conversion device. The energy conversion device includes the above-mentioned support type solid oxide single cell or the above-mentioned battery.

[0059] Optionally, the energy conversion device is a power generation device or a power consumption device. Optionally, the power consumption device is an electrolytic cell. The application also provides a preparation method of the support type solid oxide single cell. The preparation method includes the following steps: performing a porosification treatment on the support 10 to form a plurality of spaced-apart ventilation areas 101 on the support 10; and preparing a plurality of spaced-apart sub-cell units 20 on the surface of the support 10, the plurality of sub-cell units 20 correspond to the ventilation areas 101 one by one, and each sub-cell unit 20 covers the corresponding ventilation area 101.

[0060] Specifically, the porosification treatment includes at least one of laser treatment, powder metallurgy treatment, chemical etching treatment, and machining.

[0061] In a specific example, before the plurality of spaced-apart sub-cell units 20 are formed on the surface of the support 10, the preparation method further includes the following step: forming an airflow flow channel 102 in the support 10, the airflow flow channel 102 is in communication with the plurality of ventilation areas 101, and the airflow flow channel 102 penetrates through the surface of the support 10 away from the sub-cell units 20. Specifically, the forming of the airflow flow channel 102 includes at least one of laser treatment, powder metallurgy treatment, chemical etching treatment, and machining.

[0062] In a specific example, before the plurality of spaced-apart sub-cell units 20 are formed on the surface of the support 10, after the airflow flow channel 102 is formed in the support 10, the preparation method further includes the following step: forming a protective layer on at least one surface of the support 10. Further, the protective layer is formed on the entire surface of the support 10.

[0063] In a specific example, before the plurality of spaced-apart sub-cell units 20 are formed on the surface of the support 10, after the airflow flow channel 102 is formed in the support 10, the preparation method further includes the following step: forming a flow guide 30 on the surface of the support 10 away from the sub-cell units 20. The flow guide 30 is provided with a flow guide channel 301, and the flow guide channel 301 is in communication with the ventilation area 101. Further, the flow guide channel 301 on the flow guide 30 is in communication with the airflow flow channel 102 on the support 10.

[0064] It can be understood that in some specific examples, the flow guide 30 is formed on the surface of the support 10 away from the battery cell 20 after the protective layer is formed on at least one surface of the support 10.

[0065] In one specific example, for Figure 1 The preparation method of the support type solid oxide single cell shown includes the following steps: performing a poration treatment on the support 10 to form a plurality of spaced-apart ventilation areas 101 on the support 10; sequentially forming a fuel electrode layer 201, an electrolyte layer 202 and an air electrode layer 203 on the surface of the support 10, wherein the fuel electrode layer 201 is in contact with the support 10 and covers the ventilation areas 101 on the support 10.

[0066] In one specific example, the air electrode layer 203 and the fuel electrode layer 201 can be formed by silk printing, flow casting, spraying or dry pressing, and the electrolyte layer 202 can be formed by silk printing, flow casting, spraying or deposition.

[0067] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0068] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims, and the description and drawings can be used to interpret the content of the claims.

Claims

1. A supported solid oxide single cell, characterized in that, The device includes a support member and multiple sub-battery units. The support member has multiple spaced ventilation zones that penetrate the surface of the support member away from the sub-battery units and allow gas to pass through it. The support member is located on at least one side of each sub-battery unit, and each sub-battery unit corresponds to one of the ventilation zones, with the sub-battery unit covering the ventilation zone. An airflow channel is provided on the support member, and the airflow channel is connected to all of the ventilation zones, penetrating the surface of the support member away from the sub-battery units.

2. The supported solid oxide single cell according to claim 1, characterized in that, It also includes a flow guide, which is located on the surface of the support member away from the sub-battery cell. The flow guide has a flow channel that is connected to the ventilation area to guide gas into the ventilation area.

3. The supported solid oxide single cell according to claim 1, characterized in that, The support is a conductive support.

4. The supported solid oxide single cell according to claim 1, characterized in that, The thickness of the support member is 0.1mm to 5mm.

5. The supported solid oxide single cell according to any one of claims 1 to 4, characterized in that, The sub-battery unit includes an air electrode layer, an electrolyte layer, and a fuel electrode layer stacked sequentially; the air electrode layer or the fuel electrode layer covers the ventilation area.

6. The supported solid oxide single cell according to claim 5, characterized in that, The thickness of the air electrode layer is 0.1 μm to 100 μm; and / or, The thickness of the electrolyte layer is 0.1 μm to 100 μm; and / or, The thickness of the fuel electrode layer is 0.1 μm to 100 μm.

7. The supported solid oxide single cell according to claim 5, characterized in that, The air electrode layer covers the ventilated area, and the electrolyte layer extends to the sidewalls covering the air electrode layer; or... The fuel electrode layer covers the venting area, and the electrolyte layer extends to the sidewalls covering the fuel electrode layer.

8. A method for preparing a supported solid oxide single cell according to any one of claims 1 to 7, characterized in that, Includes the following steps: The support is made porous to form multiple spaced ventilation zones on the support. Multiple spaced sub-cell cells are prepared on the surface of the support member, and each sub-cell cell corresponds to a venting area, with each sub-cell cell covering the corresponding venting area.

9. A battery, characterized in that, The invention includes a housing and a supported solid oxide single cell according to any one of claims 1 to 7, wherein the supported solid oxide single cell is housed inside the housing.

10. An energy conversion device, characterized in that, Includes the supported solid oxide single cell according to any one of claims 1 to 7 or the battery according to claim 9.

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