CN110676467A - Air electrode production equipment - Google Patents
Air electrode production equipment Download PDFInfo
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- CN110676467A CN110676467A CN201810710763.3A CN201810710763A CN110676467A CN 110676467 A CN110676467 A CN 110676467A CN 201810710763 A CN201810710763 A CN 201810710763A CN 110676467 A CN110676467 A CN 110676467A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
- H01M4/8832—Ink jet printing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8896—Pressing, rolling, calendering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Inert Electrodes (AREA)
Abstract
The present invention provides an air electrode production apparatus, comprising: a first mixing unit; a second mixing unit; the first spraying unit is used for spraying the catalyst layer slurry onto the first material; the second spraying unit is used for spraying the waterproof layer slurry onto a second material; the conveying unit is used for bearing and driving the sprayed first material and the sprayed second material to move; the vacuum filtration unit is used for carrying out vacuum filtration on the sprayed first material and the sprayed second material; the rolling forming unit is used for rolling and forming the first material and the second material subjected to vacuum filtration to form the air electrode slice; the first spraying port and the second spraying port are arranged above the mesh conveying belt and are spaced at a certain distance along the conveying direction of the mesh conveying belt. The air electrode production equipment has simple manufacturing process and high efficiency, can realize mechanized, continuous and large-scale production, and has good consistency of the prepared air electrode.
Description
Technical Field
The invention relates to the field of metal fuel cell production, in particular to air electrode production equipment.
Background
The metal fuel cell is a semi-fuel cell, which is a cell that takes metal aluminum, lithium, magnesium, zinc and so on as fuel and generates oxidation-reduction reaction with oxygen in the air to generate electric energy, also called as metal air cell, compared with general lithium ion cell, it has the advantages of high specific energy, safety, environmental protection, low price and so on.
In the redox reaction, metal aluminum, lithium, magnesium, zinc, etc. are used as the battery negative electrode, and oxygen in the air is used as the battery positive electrode. The air electrode provides a place for oxygen reduction reaction, is an important component of the metal fuel cell and mainly comprises a catalyst layer, a current collecting layer and a waterproof layer. The air electrode must be capable of allowing oxygen in the air to readily permeate into the cell to participate in the reaction, must be sufficiently hydrophobic to ensure that the electrolyte does not bleed out, and must have good electrical conductivity for current removal.
Since metal fuel cells have not been widely commercialized yet, many air electrodes are currently manufactured by laminating a catalyst layer, a current collector layer, and a waterproof layer together mainly by manual rolling or hot pressing. The whole manufacturing process is more in manual operation, uniformity and consistency of materials are difficult to guarantee, the finally prepared air electrode is poor in performance consistency, meanwhile, the manufacturing process is complex, the efficiency is low, and large-scale production is difficult to carry out.
Therefore, how to provide an air electrode production device is necessary to solve the problems that the uniformity and consistency of materials cannot be guaranteed mainly through manual manufacturing of the existing air electrode, so that the finally prepared air electrode is poor in performance consistency, the manufacturing process is complex, the efficiency is low, and large-scale production is difficult to carry out.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide an air electrode production apparatus, which is used to solve the problems in the prior art that the uniformity and consistency of the material of the air electrode cannot be guaranteed mainly by manual fabrication, so that the finally prepared air electrode has poor performance consistency, the fabrication process is complex, the efficiency is low, and the large-scale production is difficult.
To achieve the above and other related objects, the present invention provides an air electrode producing apparatus, comprising:
the first mixing unit is used for preparing catalytic layer slurry;
the second mixing unit is used for preparing waterproof layer slurry;
the first spraying unit comprises a first pulling mechanism for pulling a first material and a first spraying opening, wherein the first material comprises a first flow collecting layer;
the second spraying unit comprises a second pulling mechanism for pulling a second material and a second spraying opening, wherein the second material comprises a second current collecting layer;
the conveying unit comprises a mesh conveying belt and is used for bearing and driving the sprayed first material and the sprayed second material to move;
the vacuum filtration unit comprises a vacuum filtration device, and the vacuum filtration device is arranged below the mesh conveying belt and is used for carrying out vacuum filtration on the sprayed first material and the sprayed second material;
the rolling forming unit is arranged on the right side of the conveying unit and is used for rolling and forming the first material and the second material subjected to vacuum filtration to form an air electrode plate;
the first spraying port and the second spraying port are arranged above the mesh conveying belt and are spaced at a certain distance along the conveying direction of the mesh conveying belt.
Preferably, the first spraying unit is located on the left side of the second spraying unit, the first spraying port is used for spraying the catalytic layer slurry onto the first material pulled by the first pulling and conveying mechanism, and the second spraying port is used for spraying the waterproof layer slurry onto the catalytic layer slurry which is subjected to suction filtration by the vacuum filtration unit.
Preferably, the second spraying unit is located on the left side of the first spraying unit, the second spraying port is used for spraying the waterproof layer slurry onto the second material pulled by the second pulling and conveying mechanism, and the first spraying port is used for spraying the catalytic layer slurry onto the waterproof layer slurry which is subjected to suction filtration by the vacuum filtration unit.
Preferably, the air electrode production equipment further comprises a cutting unit arranged on the right side of the roll forming unit and used for cutting off the air electrode sheet.
Further, the cutting unit cuts off the air electrode plate in a pneumatic mode.
Preferably, the first mixing unit comprises a first stirring tank, a first impeller arranged in the first stirring tank, and a first discharge port arranged at the bottom of the first stirring tank, wherein the first impeller is driven by a motor to rotate so as to stir the catalyst layer slurry in the first stirring tank, and discharge the catalyst layer slurry through the first discharge port; the second compounding unit include the second agitator tank, set up in second impeller in the second agitator tank and set up in the second discharge gate of second agitator tank bottom, the second impeller passes through motor drive rotation in order to stir in the second agitator tank the waterproof layer thick liquids, and pass through the second discharge gate will the waterproof layer thick liquids are discharged.
Preferably, the waterproof layer slurry comprises a powdery waterproof layer material and a dispersing agent, and the catalyst layer slurry comprises a powdery catalyst layer material and a dispersing agent.
Further, the waterproof layer material comprises carbon powder, a binder and a pore-forming agent, the catalytic layer material comprises carbon powder, a binder, a pore-forming agent and a catalyst, the first current collecting layer comprises one of the groups formed by foamed nickel, a nickel net, foamed copper, a copper net and a stainless steel net, and the second current collecting layer comprises one of the groups formed by foamed nickel, a nickel net, foamed copper, a copper net and a stainless steel net.
Preferably, the first pulling mechanism comprises a first inner roller and a first outer roller, the first inner roller is used for pulling the flow-collecting layer, and the first outer roller is used for pulling the filter paper; the second pulling and feeding mechanism comprises a second inner roller and a second outer roller, the second inner roller is used for pulling and feeding the flow collecting layer, and the second outer roller is used for pulling and feeding the filter paper.
Preferably, the width of the first spraying opening is consistent with the width of the first material, and the width of the second spraying opening is consistent with the width of the second material.
Preferably, the vacuum filtration device comprises a first vacuum filtration device and a second vacuum filtration device, the first vacuum filtration device is arranged below the mesh conveyer belt between the first spraying port and the second spraying port, and the second vacuum filtration device is arranged below the mesh conveyer belt at the position where the first material and the second material are overlapped.
Preferably, the vacuum filtration device further comprises a recovery tank for recovering the catalytic layer slurry and the filtrate in the waterproof layer slurry.
Preferably, the mesh size of the mesh conveyor belt is between 0.5mm and 5 mm.
Preferably, the roll forming unit comprises a pair of rollers, and the first material and the second material are extruded and formed through a gap between the rollers.
Preferably, the air electrode production equipment further comprises a PLC control unit for monitoring and controlling the air electrode production equipment in real time.
As described above, the air electrode production apparatus of the present invention has the following advantageous effects: the whole process is mechanized and continuous production from the preparation of powder required by the air electrode to the formation of the air electrode plate, the manufacturing process is simple and high in efficiency, mechanized, large-scale and continuous production can be realized, and the manufacturing cost is reduced; in addition, the automation control unit further improves the automation level of the production equipment; finally, the consistency of the performance of the air electrode plate is improved through mechanized and continuous production.
Drawings
Fig. 1 is a perspective view schematically showing an air electrode producing apparatus according to the present invention.
Fig. 2 is a front view showing an air electrode producing apparatus of the present invention.
Fig. 3 is a left side view showing an air electrode producing apparatus of the present invention.
Fig. 4 is a plan view showing an air electrode producing apparatus of the present invention.
Description of the element reference numerals
1 first mixing unit
2 second mixing unit
31 first pulling and feeding mechanism
311 first inner roller
312 first outer roll
32 first spraying opening
33 first material
331 first current collector layer
332 filter paper
41 second pulling and feeding mechanism
411 second inner roller
412 second outer roller
42 second spraying opening
43 second Material
431 second current collector layer
432 filter paper
5 conveying unit
51 mesh conveyer belt
6 vacuum suction filtration unit
7 roll forming unit
8 cutting unit
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1 to 4. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
As shown in fig. 1 to 4, the present invention provides an air electrode production apparatus including:
the first mixing unit 1 is used for preparing catalytic layer slurry;
the second mixing unit 2 is used for preparing waterproof layer slurry;
the first spraying unit comprises a first pulling mechanism 31 for pulling the first material 33 and a first spraying opening 32, wherein the first material 33 comprises a first current collecting layer 331;
a second spraying unit, which comprises a second pulling mechanism 41 for pulling a second material 43 and a second spraying opening 42, wherein the second material 43 comprises a second current collecting layer 431;
the conveying unit 5 comprises a mesh conveying belt 51 for bearing and driving the sprayed first material 33 and the sprayed second material 43 to move;
the vacuum filtration unit 6 comprises a vacuum filtration device, and the vacuum filtration device is arranged below the mesh conveyor belt and is used for carrying out vacuum filtration on the sprayed first material 33 and the sprayed second material 43;
the roll forming unit 7 is arranged on the right side of the conveying unit and is used for roll forming the first material 33 and the second material 43 subjected to vacuum filtration to form an air electrode sheet;
the first spraying openings 32 and the second spraying openings 42 are arranged above the mesh conveyer belt 51 and are spaced at a certain distance along the conveying direction of the mesh conveyer belt 51.
As shown in fig. 1, the catalyst layer slurry is prepared in the first mixing unit 1, and then the catalyst layer slurry is conveyed to the first spraying unit, preferably, the catalyst layer slurry can be pumped to the first spraying port 32 of the first spraying unit by using a pump, and the catalyst layer slurry is sprayed onto the first material 33 pulled by the first pulling mechanism 31 through the first spraying port 32, and then the sprayed first material 33 is vacuumized by a vacuum filtration device disposed below the mesh conveyor belt 51, so that the catalyst layer slurry cannot flow freely on the first material 33, so as to form a catalyst layer of the air electrode. Preparing the waterproof layer slurry in the second mixing unit 2, and then conveying the waterproof layer slurry to the second spraying unit, preferably, pumping the waterproof layer slurry to the second spraying port 42 of the second spraying unit by using a pump, wherein as the mesh conveyor belt 51 is conveyed rightward, when the catalytic layer slurry which is filtered by the vacuum filtration device to be incapable of flowing freely is conveyed to the second spraying port 42, the waterproof layer slurry is sprayed onto the catalytic layer slurry which is incapable of flowing freely by the second spraying port 42, and the first material 33 and the second material 43 are overlapped together, and as the mesh conveyor belt 51 is conveyed rightward, the sprayed second material 43 is pumped by the vacuum filtration device arranged below the mesh conveyor belt 51, so that the waterproof layer slurry cannot flow freely on the second material 43, to form a water barrier for the air electrode. Because the first spraying ports 32 and the second spraying ports 42 are arranged above the mesh conveyer belt 51 and are spaced at a certain distance along the conveying direction of the mesh conveyer belt 51, when the sprayed first material 33 is conveyed to the second spraying ports 42, the catalytic layer slurry can be filtered by the vacuum filtering device until the catalytic layer slurry cannot flow freely, and after the first material 33 and the second material 43 are overlapped, the vacuum filtering device mainly filters the waterproof layer slurry in vacuum so that the waterproof layer slurry cannot flow freely. The first material 33, the second material 43, the catalyst layer slurry and the waterproof layer slurry after vacuum filtration enter the roll forming unit 7 from the mesh conveyor belt 51, and are rolled to form the air electrode sheet.
In this embodiment, as shown in fig. 1, the catalyst layer of the air electrode is formed first, that is, the first spraying unit is disposed on the left side of the air electrode production equipment, and then the waterproof layer of the air electrode is formed, that is, the second spraying unit is disposed on the right side of the air electrode production equipment. In the invention, the preparation sequence of the catalyst layer and the waterproof layer is not limited, namely the first spraying unit can also be arranged at the right side of the air electrode production equipment, the second spraying unit is disposed on the left side of the air electrode production equipment, at this time, the second spraying port 42 is used for spraying the waterproof layer slurry onto the second material 43 pulled by the second pulling mechanism 41, the first spraying port 32 is used for spraying the catalytic layer slurry onto the waterproof layer slurry which is filtered by the vacuum filtration unit, between the distance between the first spraying port 32 and the second spraying port 42, the vacuum filtration unit 6 filters the waterproof layer slurry to prevent the waterproof layer slurry from flowing freely, and after the first material 33 and the second material 43 are overlapped, the catalytic layer slurry is mainly subjected to vacuum filtration by the vacuum filtration device so as not to flow freely.
As shown in fig. 2 and 4, the air electrode production equipment further includes a cutting unit 8 disposed at the right side of the roll forming unit 7 for cutting the air electrode sheet. The air electrode roll-formed by the roll forming unit 7 enters the cutting unit 8, and the air electrode sheet is cut. Preferably, the cutting unit 8 can adjust the cutting length to meet the requirements of preparing electrodes with different specifications. The cutting unit may adopt various cutting methods such as pneumatic, electric, hydraulic, etc., and preferably, the cutting unit 8 in this embodiment adopts a pneumatic method to cut off the air electrode sheet.
As an example, the first mixing unit 1 includes a first stirring tank, a first impeller disposed in the first stirring tank, and a first discharge port disposed at a bottom of the first stirring tank, wherein the first impeller is driven to rotate by a motor to stir the catalyst layer slurry in the first stirring tank, and discharges the catalyst layer slurry through the first discharge port; the second mixing unit 2 comprises a second stirring tank, a second impeller arranged in the second stirring tank and a second discharge hole formed in the bottom of the second stirring tank, the second impeller is driven by a motor to rotate to stir the waterproof layer slurry in the second stirring tank, and the waterproof layer slurry is discharged from the second discharge hole. The catalytic layer slurry and the waterproof layer slurry can be uniformly mixed and can not be settled through the rotary stirring of the first impeller and the second impeller.
As an example, the catalytic layer slurry is made by dispersing a powdery catalytic layer material in a dispersant, and the waterproof layer slurry is made by dispersing a powdery waterproof layer material in a dispersant. Preferably, the dispersant comprises isopropyl ketone.
As an example, the waterproof layer material includes carbon powder, a binder and a pore former, the catalytic layer material includes carbon powder, a binder, a pore former and a catalyst, the first current collecting layer 331 includes one of a group consisting of nickel foam, a nickel mesh, copper foam, a copper mesh and a stainless steel mesh, and the second current collecting layer 431 includes one of a group consisting of nickel foam, a nickel mesh, copper foam, a copper mesh and a stainless steel mesh.
Preferably, as shown in fig. 1 and 2, the first pulling mechanism 31 includes a first inner roller 311 and a first outer roller 312, the first inner roller 311 is used for pulling the first current collecting layer 331, and the first outer roller 312 is used for pulling the filter paper 332; the second drawing mechanism 41 includes a second inner roller 411 and a second outer roller 412, the second inner roller 411 is used for drawing the second flow collecting layer 431, and the second outer roller 412 is used for drawing the filter paper 432; the catalytic layer slurry is sprayed onto the first current collecting layer 331 drawn by the first inner roller 311 through the first spraying port 32; the waterproof layer slurry is sprayed onto the second current collecting layer 431 pulled by the second inner roller 411 through the second spraying port 42, wherein the filter paper 332 and 432 have certain strength to prevent the leakage phenomenon in the vacuum filtration process, and simultaneously have a better function of filtering the dispersant.
As an example, the width of the first spraying opening 32 is consistent with the width of the first material 33, and the width of the second spraying opening 42 is consistent with the width of the second material 43, so that the uniform spraying of the slurry on the materials can be ensured. Preferably, the first spraying opening 32 and the second spraying opening 42 are arranged with an adjustable gap for adjusting the slurry discharging speed of the slurry.
As an example, the vacuum filtration device includes a first vacuum filtration device disposed below the mesh conveyor belt 51 between the first spraying port 32 and the second spraying port 42, and a second vacuum filtration device disposed below the mesh conveyor belt 51 where the first material 33 and the second material 43 coincide with each other. Because the materials of the vacuum filtration above the two sections of conveying belts 51 are different, different vacuum filtration devices are respectively arranged, namely the first vacuum filtration device and the second vacuum filtration device can conveniently adjust the vacuum filtration parameters according to specific conditions so as to ensure the consistency of the vacuum filtration effect. Preferably, the vacuum filtration device further comprises a recovery tank for recovering the catalytic layer slurry and the filtrate in the waterproof layer slurry for recycling.
By way of example, the mesh size of the mesh conveyor belt 51 is between 0.5mm and 5 mm.
As an example, the roll forming unit 7 includes a pair of rollers, and the first material 33 and the second material 43 are extruded through a gap between the rollers. Preferably, the gap between the rollers is adjustable, so that the air electrode plate formed by rolling can meet different thickness requirements.
As an example, the air electrode production equipment further includes a PLC (Programmable Logic Controller) control unit for monitoring and controlling the air electrode production equipment in real time. The PLC control unit can adopt a touch screen mode to monitor the liquid levels of the first mixing unit 1 and the second mixing unit 2 on line and control the slurry outflow speed, the movement speed of the mesh conveyer belt 51, the vacuum degree of the vacuum filtration unit 6, the cutting speed of the cutting unit 8 and the like, so that different units of the air electrode production equipment can run synchronously.
The air electrode plate prepared and formed by the air electrode production equipment sequentially comprises a filter paper layer, a flow collecting layer, a waterproof layer, a catalyst layer, a flow collecting layer and a filter paper layer, and the air electrode can be formed by removing the two outermost filter paper layers, performing hot pressing and the like. Because the current collecting layer is generally a porous layer, the waterproof layer and the catalytic layer can be extruded through the holes of the current collecting layer in the hot pressing process, so that the air electrode with the waterproof layer, the current collecting layer and the catalytic layer which are sequentially stacked is formed.
In summary, the present invention provides an air electrode production apparatus, comprising: the first mixing unit is used for preparing catalytic layer slurry; the second mixing unit is used for preparing waterproof layer slurry; the first spraying unit comprises a first pulling mechanism for pulling a first material and a first spraying port, and is used for spraying the catalyst layer slurry onto the first material pulled by the first pulling mechanism through the first spraying port; the second spraying unit comprises a second pulling mechanism for pulling a second material and a second spraying port, and is used for spraying the waterproof layer slurry onto the second material pulled by the second pulling mechanism through the second spraying port; the conveying unit comprises a mesh conveying belt and is used for bearing and driving the sprayed first material and the sprayed second material to move; the vacuum filtration unit comprises a vacuum filtration device, and the vacuum filtration device is arranged below the mesh conveying belt and is used for carrying out vacuum filtration on the sprayed first material and the sprayed second material; the rolling forming unit is arranged on the right side of the conveying unit and is used for rolling and forming the first material and the second material subjected to vacuum filtration to form an air electrode plate; the first spraying port and the second spraying port are arranged above the mesh conveying belt and are spaced at a certain distance along the conveying direction of the mesh conveying belt. The whole process is mechanized and continuous production from the preparation of powder required by the air electrode to the formation of the air electrode plate, the manufacturing process is simple and high in efficiency, mechanized, large-scale and continuous production can be realized, and the manufacturing cost is reduced; in addition, the automation control unit further improves the automation level of the production equipment; finally, the consistency of the performance of the air electrode plate is improved through mechanized and continuous production. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (15)
1. An air electrode production apparatus, characterized in that the production apparatus comprises:
the first mixing unit is used for preparing catalytic layer slurry;
the second mixing unit is used for preparing waterproof layer slurry;
the first spraying unit comprises a first pulling mechanism for pulling a first material and a first spraying opening, wherein the first material comprises a first flow collecting layer;
the second spraying unit comprises a second pulling mechanism for pulling a second material and a second spraying opening, wherein the second material comprises a second current collecting layer;
the conveying unit comprises a mesh conveying belt and is used for bearing and driving the sprayed first material and the sprayed second material to move;
the vacuum filtration unit comprises a vacuum filtration device, and the vacuum filtration device is arranged below the mesh conveying belt and is used for carrying out vacuum filtration on the sprayed first material and the sprayed second material;
the rolling forming unit is arranged on the right side of the conveying unit and is used for rolling and forming the first material and the second material subjected to vacuum filtration to form an air electrode plate;
the first spraying port and the second spraying port are arranged above the mesh conveying belt and are spaced at a certain distance along the conveying direction of the mesh conveying belt.
2. The air electrode production apparatus according to claim 1, characterized in that: the first spraying unit is located on the left side of the second spraying unit, the first spraying port is used for spraying the catalytic layer slurry onto the first material pulled by the first pulling and conveying mechanism, and the second spraying port is used for spraying the waterproof layer slurry onto the catalytic layer slurry subjected to suction filtration by the vacuum suction filtration unit.
3. The air electrode production apparatus according to claim 1, characterized in that: the second spraying unit is located on the left side of the first spraying unit, the second spraying port is used for spraying the waterproof layer slurry onto the second material pulled by the second pulling and conveying mechanism, and the first spraying port is used for spraying the catalytic layer slurry onto the waterproof layer slurry subjected to suction filtration by the vacuum suction filtration unit.
4. The air electrode production apparatus according to claim 1, characterized in that: the air electrode production equipment further comprises a cutting unit arranged on the right side of the roll forming unit and used for cutting off the air electrode slice.
5. The air electrode production apparatus according to claim 4, characterized in that: the cutting unit cuts off the air electrode plates in a pneumatic mode.
6. The air electrode production apparatus according to claim 1, characterized in that: the first mixing unit comprises a first stirring tank, a first impeller arranged in the first stirring tank and a first discharge hole arranged at the bottom of the first stirring tank, the first impeller is driven to rotate by a motor so as to stir the catalyst layer slurry in the first stirring tank, and the catalyst layer slurry is discharged through the first discharge hole; the second compounding unit include the second agitator tank, set up in second impeller in the second agitator tank and set up in the second discharge gate of second agitator tank bottom, the second impeller passes through motor drive rotation in order to stir in the second agitator tank the waterproof layer thick liquids, and pass through the second discharge gate will the waterproof layer thick liquids are discharged.
7. The air electrode production apparatus according to claim 1, characterized in that: the waterproof layer slurry comprises a powdery waterproof layer material and a dispersing agent, and the catalyst layer slurry comprises a powdery catalyst layer material and a dispersing agent.
8. The air electrode production apparatus according to claim 7, characterized in that: the waterproof layer material comprises carbon powder, a binder and a pore-forming agent, the catalytic layer material comprises carbon powder, a binder, a pore-forming agent and a catalyst, the first current-collecting layer comprises one of the groups formed by foamed nickel, a nickel net, foamed copper, a copper net and a stainless steel net, and the second current-collecting layer comprises one of the groups formed by foamed nickel, a nickel net, foamed copper, a copper net and a stainless steel net.
9. The air electrode production apparatus according to claim 2 or 3, characterized in that: the first pulling and feeding mechanism comprises a first inner roller and a first outer roller, the first inner roller is used for pulling and feeding the flow collecting layer, and the first outer roller is used for pulling and feeding the filter paper; the second pulling and feeding mechanism comprises a second inner roller and a second outer roller, the second inner roller is used for pulling and feeding the flow collecting layer, and the second outer roller is used for pulling and feeding the filter paper.
10. The air electrode production apparatus according to claim 1, characterized in that: the width of the first spraying opening is consistent with that of the first material, and the width of the second spraying opening is consistent with that of the second material.
11. The air electrode production apparatus according to claim 1, characterized in that: the vacuum filtration device comprises a first vacuum filtration device and a second vacuum filtration device, the first vacuum filtration device is arranged below the mesh conveyer belt between the first spraying port and the second spraying port, and the second vacuum filtration device is arranged below the mesh conveyer belt at the position where the first material and the second material coincide.
12. The air electrode production apparatus according to claim 1, characterized in that: the vacuum filtration device also comprises a recovery tank for recovering the catalyst layer slurry and the filtrate in the waterproof layer slurry.
13. The air electrode production apparatus according to claim 1, characterized in that: the mesh size of the mesh conveyer belt is between 0.5mm and 5 mm.
14. The air electrode production apparatus according to claim 1, characterized in that: the roll forming unit comprises a pair of rollers, and the first material and the second material are extruded and formed through a gap between the rollers.
15. The air electrode production apparatus according to claim 1, characterized in that: the air electrode production equipment also comprises a PLC control unit which is used for monitoring and controlling the air electrode production equipment in real time.
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| CN201810710763.3A CN110676467B (en) | 2018-07-03 | 2018-07-03 | Air electrode production equipment |
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| CN201810710763.3A CN110676467B (en) | 2018-07-03 | 2018-07-03 | Air electrode production equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271305A (en) * | 2020-11-12 | 2021-01-26 | 中国科学技术大学 | Air electrode production equipment and method |
| CN112687887A (en) * | 2020-12-29 | 2021-04-20 | 长沙迅洋新材料科技有限公司 | Magnesium metal air battery anode catalyst and continuous coating preparation method thereof |
| CN114774087A (en) * | 2022-04-11 | 2022-07-22 | 广州大学 | Method for preparing graphene heat-conducting film |
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| CN114774087A (en) * | 2022-04-11 | 2022-07-22 | 广州大学 | Method for preparing graphene heat-conducting film |
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