CN220665462U - Solid oxide electrolytic cell - Google Patents
Solid oxide electrolytic cell Download PDFInfo
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- CN220665462U CN220665462U CN202322285936.0U CN202322285936U CN220665462U CN 220665462 U CN220665462 U CN 220665462U CN 202322285936 U CN202322285936 U CN 202322285936U CN 220665462 U CN220665462 U CN 220665462U
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- fluid valve
- solid oxide
- channel
- valve
- tesla
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- 239000007787 solid Substances 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 230000002441 reversible effect Effects 0.000 claims abstract description 23
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 33
- 239000012495 reaction gas Substances 0.000 abstract description 16
- 230000010287 polarization Effects 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 3
- 241000276425 Xiphophorus maculatus Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses a solid oxide electrolytic cell, which comprises a support body, wherein a cathode layer is arranged above the support body, an anode layer and an electrolyte layer positioned between the cathode layer and the anode layer are arranged above the cathode layer, a flat-plate-shaped substrate and a unidirectional fluid valve channel component which penetrates through the flat-plate-shaped substrate up and down are arranged on the support body, and the unidirectional fluid valve channel component comprises at least one forward fluid valve channel capable of unidirectionally conveying reaction gas and at least one reverse fluid valve channel which is opposite to the forward fluid valve channel in arrangement direction and can unidirectionally discharge product gas. According to the utility model, the unidirectional fluid valves with opposite transportation directions are arranged in the support body of the solid oxide electrolytic cell, so that the rapid entry of the reaction gas and the timely discharge of the product gas are realized, and the concentration polarization phenomenon of SOEC is further reduced.
Description
Technical Field
The utility model relates to the technical field of electrolytic cells, in particular to a solid oxide electrolytic cell.
Background
The solid oxide electrolytic cell (Solid Oxide Electrolysis Cell, SOEC for short) is a device for efficiently converting electric energy into chemical energy for storage, and can utilize surplus electric energy generated by renewable energy sources such as solar energy, wind energy or geothermal energy to convert H 2 O and CO 2 Conversion to H 2 And CO and the like. SOEC has advantages of high energy conversion efficiency, low cost, capability of realizing a reversible operation mode, capability of utilizing industrial waste heat and the like, and is considered as the most promising energy storage mode.
SOEC is largely divided into electrolyte support, cathode support, anode support and outer support structures according to the type of support. Because the electrolyte material has lower ionic conductivity, a thicker electrolyte layer can generate larger ohmic impedance, so that the current SOEC adopts a cathode supporting structure and an outer supporting structure to realize the thinning of the electrolyte layer and reduce the working temperature of the SOEC. When SOEC uses a cathode support structure and an outer support structure, the support is required to provide sufficient mechanical strength on the one hand and to have a porous structure on the other hand to allow rapid entry of the reaction gas and timely exit of the product gas. In recent years, a straight hole structure is introduced into a cathode support body and an outer support body to reduce the resistance of gas transmission and realize gas transmission so as to reduce concentration polarization of SOEC, but in the process of adopting the straight hole structure to transmit gas, transmission resistance exists between two gases when a reaction gas and a product gas are transmitted in the same channel, so that the gas transmission speed is low, and the concentration polarization phenomenon of SOEC is not favorable to be further reduced.
The present utility model has been made based on this situation.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a solid oxide electrolytic cell, which is beneficial to further reducing concentration polarization of SOEC by arranging a one-way fluid valve with opposite transportation directions in a support body of the solid oxide electrolytic cell so as to realize rapid entry of reaction gas and timely discharge of product gas.
The utility model is realized by the following technical scheme:
the utility model provides a solid oxide electrolytic cell, includes the supporter, the top of supporter is equipped with the cathode layer, the top of cathode layer is equipped with anode layer and is located the electrolyte layer between cathode layer and the anode layer, be equipped with the platy base member on the supporter and run through from top to bottom the unilateral fluid valve passageway subassembly of platy base member, the unilateral fluid valve passageway subassembly includes at least one can the unidirectional transport reaction gas's forward fluid valve passageway and at least one with the forward fluid valve passageway sets up opposite and can the unilateral reverse fluid valve passageway of discharge product gas.
The solid oxide electrolysis cell as described above, the forward fluid valve channel being a forward tesla valve channel; the reverse fluid valve passageway is a reverse tesla valve passageway.
The solid oxide electrolytic cell is characterized in that the Tesla valve type channel is provided with an inflow port, an outflow port and at least two Tesla valve structural units communicated in series, and the Tesla valve structural units comprise a main channel and side channels with two ends communicated with the main channel.
The solid oxide electrolytic cell, wherein the inflow port of the forward Tesla valve type channel is communicated with the outside, and the outflow port is communicated with the interface of the cathode layer, so that the reaction gas can flow in one way through the forward Tesla valve type channel; the inflow port of the reverse Tesla valve type channel is communicated with the interface of the cathode layer, and the outflow port is communicated with the outside, so that the product gas can flow out unidirectionally through the reverse Tesla valve type channel.
The solid oxide electrolytic cell as described above, the forward flow valve channels and the reverse flow valve channels are alternately arranged at intervals.
The solid oxide electrolytic cell as described above, wherein the support is a porous ceramic support.
The solid oxide electrolytic cell as described above, wherein the support is a porous metal support.
The solid oxide electrolytic cell, wherein the cathode layer and the anode layer are porous structure layers with the thickness of 5-20 mu m; the electrolyte layer is a compact structure layer with the thickness of 5-20 mu m.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, by designing the forward Tesla valve type channel and the reverse Tesla valve type channel, based on the unidirectional circulation characteristic of the Tesla valve, the reaction gas and the product gas are separately transmitted, and the resistance generated by the two gases to each other in the transmission process is avoided, so that the gas is more rapidly and efficiently transmitted.
2. According to the utility model, the forward fluid valve channels and the reverse fluid valve channels are alternately arranged at intervals, so that the reaction gas and the product gas can be more uniformly and separately transmitted, and the maximization of gas transmission efficiency is facilitated.
3. The utility model can realize the arrangement of a thinner electrode layer and an electrolyte layer by using the porous ceramic support or the porous metal support, is beneficial to simultaneously reducing the gas diffusion resistance in the electrode layer and the ohmic resistance of the electrolyte layer, and is further beneficial to preparing an electrolytic cell with higher electrochemical performance.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic flow diagram of the reactant gases and product gases of the present utility model.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, a solid oxide electrolytic cell in the present utility model comprises a support body 1, a cathode layer 2 is arranged above the support body 1, an anode layer 4 and an electrolyte layer 3 positioned between the cathode layer 2 and the anode layer 4 are arranged above the cathode layer 2, a flat plate-shaped substrate 11 and a unidirectional fluid valve channel assembly 5 penetrating the flat plate-shaped substrate 11 up and down are arranged on the support body 1, and the unidirectional fluid valve channel assembly 5 comprises at least one forward fluid valve channel 51 capable of unidirectionally conveying reaction gas and at least one reverse fluid valve channel 52 which is opposite to the forward fluid valve channel 51 in arrangement direction and capable of unidirectionally discharging product gas.
According to the utility model, the unidirectional fluid valve channel assembly 5 consisting of the forward fluid valve channel 51 and the reverse fluid valve channel 52 is arranged in the support body 1 of the solid oxide electrolytic cell, so that the reaction gas and the product gas can be well transmitted separately, and the gas transmission resistance and the concentration polarization phenomenon of SOEC can be further reduced. As shown in fig. 2, the reaction gas 71 enters the forward flow valve passage 51 in the support body 1 from the outside, and is transported to the interface of the cathode layer 2 adjacent to the support body 1 via the forward flow valve passage 51 to complete rapid entry of the reaction gas; the product gas 72 enters the reverse flow valve channel 52 in the support body 1 from the interface of the cathode layer 2, and is transported to the outside through the reverse flow valve channel 52 to complete the rapid discharge of the reaction gas.
Specifically, as shown in fig. 1, the forward fluid valve passage 51 described in the present embodiment is a forward tesla valve passage; the reverse flow valve passage 52 is a reverse tesla valve passage. Based on the characteristic of one-way circulation of the Tesla valve, the reaction gas and the product gas are separately transmitted, and the resistance of the two gases to each other in the transmission process is avoided, so that the gas is transmitted more quickly and more efficiently. As the Tesla valve type channel is used as a special-shaped flow channel structure, certain difficulty exists in processing, and the forming of the Tesla valve type channel is generally realized through a 3D printing technology.
In the present utility model, an inflow port 61, an outflow port 63, and at least two tesla valve structural units 62 connected in series are provided on any one tesla valve type passage, and the tesla valve structural units 62 include a main passage 621 and side passages 622 having both ends connected to the main passage 621. Specifically, in this embodiment, the inflow port 61 of the forward tesla valve channel communicates with the outside, and the outflow port 63 communicates with the interface of the cathode layer 2, so that the reaction gas can flow in one way through the forward tesla valve channel; the inlet port 61 of the inverted tesla valve channel communicates with the cathode layer 2 interface and the outlet port 63 communicates with the outside, so that the product gas can flow unidirectionally through the inverted tesla valve channel.
In order to achieve a more uniform and separate transfer of the reactant gases and the product gases and to maximize the efficiency of gas transfer, the forward flow valve channels 51 and the reverse flow valve channels 52 in this embodiment are alternately arranged at intervals.
In the utility model, the support body 1 is a porous ceramic support body, and can be a porous metal support body, and the porous support bodies of the two materials can realize the arrangement of a thinner electrode layer and an electrolyte layer, thereby being beneficial to simultaneously reducing the gas diffusion resistance in the electrode layer and the ohmic resistance of the electrolyte layer and further being beneficial to preparing an electrolytic cell with higher electrochemical performance.
In the utility model, the surface of a support body 1 is required to be sequentially provided with a cathode layer 2, an electrolyte layer 3 and an anode layer 4, wherein the cathode layer 2 and the anode layer 4 are porous structure layers with the thickness of 5-20 mu m, and the electrolyte layer 3 is a compact structure layer with the thickness of 5-20 mu m. The arrangement of the thinner electrode layer and the electrolyte layer is beneficial to simultaneously reducing the gas diffusion resistance in the electrode layer and the ohmic resistance of the electrolyte layer, thereby being beneficial to preparing the electrolytic cell with higher electrochemical performance.
Claims (7)
1. The utility model provides a solid oxide electrolytic cell, includes support body (1), the top of support body (1) is equipped with cathode layer (2), the top of cathode layer (2) is equipped with positive pole layer (4) and is located electrolyte layer (3) between cathode layer (2) and positive pole layer (4) both, its characterized in that be equipped with on support body (1) dull and stereotyped form base member (11) and run through from top to bottom one-way fluid valve channel subassembly (5) of dull and stereotyped form base member (11), one-way fluid valve channel subassembly (5) include at least one forward fluid valve passageway (51) that can one-way transport reactant gas and at least one with forward fluid valve passageway (51) set up opposite direction and can one-way exhaust product gas's reverse fluid valve passageway (52).
2. A solid oxide electrolysis cell according to claim 1, characterized in that the forward fluid valve channel (51) is a forward tesla valve channel; the reverse fluid valve passageway (52) is a reverse tesla valve passageway.
3. A solid oxide electrolysis cell according to claim 2, characterised in that the tesla valve channel is provided with an inflow (61), an outflow (63) and at least two tesla valve structural units (62) communicating in series, the tesla valve structural units (62) comprising a main channel (621) and side channels (622) communicating with the main channel (621) at both ends.
4. A solid oxide electrolysis cell according to claim 3, wherein the inflow port (61) of the forward tesla valve channel is in communication with the outside and the outflow port (63) is in interfacial communication with the cathode layer (2) to enable unidirectional inflow of reactant gas through the forward tesla valve channel; the inflow port (61) of the reverse Tesla valve type channel is communicated with the interface of the cathode layer (2), and the outflow port (63) is communicated with the outside, so that the product gas can flow out unidirectionally through the reverse Tesla valve type channel.
5. A solid oxide electrolysis cell according to claim 1, wherein the forward fluid valve channels (51) alternate with the reverse fluid valve channels (52) at intervals.
6. A solid oxide electrolysis cell according to claim 1, wherein the support (1) is a porous ceramic support.
7. A solid oxide electrolysis cell according to claim 1, wherein the support (1) is a porous metal support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322285936.0U CN220665462U (en) | 2023-08-24 | 2023-08-24 | Solid oxide electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322285936.0U CN220665462U (en) | 2023-08-24 | 2023-08-24 | Solid oxide electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220665462U true CN220665462U (en) | 2024-03-26 |
Family
ID=90341050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322285936.0U Active CN220665462U (en) | 2023-08-24 | 2023-08-24 | Solid oxide electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220665462U (en) |
-
2023
- 2023-08-24 CN CN202322285936.0U patent/CN220665462U/en active Active
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