CN213401270U - Flexible direct methanol fuel cell - Google Patents
Flexible direct methanol fuel cell Download PDFInfo
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- CN213401270U CN213401270U CN202022649972.7U CN202022649972U CN213401270U CN 213401270 U CN213401270 U CN 213401270U CN 202022649972 U CN202022649972 U CN 202022649972U CN 213401270 U CN213401270 U CN 213401270U
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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
Abstract
The utility model relates to a flexible direct methanol fuel cell, including the flexible positive pole end plate that sets gradually, flexible positive pole collecting electrode, flexible membrane electrode, flexible negative pole collecting electrode and flexible negative pole end plate, one side of the flexible positive pole collecting electrode of orientation of flexible positive pole end plate is equipped with the fuel tank, and flexible positive pole collecting electrode and flexible negative pole collecting electrode are metal mesh electrode and are equipped with the wiring respectively and draw forth the end, and the wiring is drawn forth the edge that the end is located flexible negative pole end plate and flexible positive pole end plate. This application adopts flexible end plate, flexible membrane electrode and uses the netted electrode of metal as the collecting electrode, can realize direct methanol fuel cell's whole flexibility, has effectively improved the applicability of direct methanol fuel cell in portable electronic equipment field.
Description
Technical Field
The application relates to the technical field of fuel cells, in particular to a flexible direct methanol fuel cell.
Background
Along with the increasingly widespread application of portable electronic products to people's lives, electronic products are gradually miniaturized, flexible, wearable, and adaptively, fuel cells for supplying energy to electronic products are also gradually developed to be miniaturized, flexible, wearable. Direct Methanol Fuel Cell (DMFC) is a device that can directly transform chemical energy into electric energy only by consuming methanol and oxygen, has the advantages of simple structure, no noise, little environmental pollution, high energy density, high starting speed and the like, and can effectively supply energy for portable electronic products. However, the overall structure of the existing direct methanol fuel cell is not flexible, which limits the application of the direct methanol fuel cell in the field of portable electronic devices to a certain extent.
SUMMERY OF THE UTILITY MODEL
To above-mentioned technical problem, the application provides a flexible direct methanol fuel cell, can realize direct methanol fuel cell's whole flexibility, has effectively improved direct methanol fuel cell's applicability in portable electronic equipment field.
For solving above-mentioned technical problem, the application provides a flexible direct methanol fuel cell, including flexible anode end plate, flexible anode collector, flexible membrane electrode, flexible cathode collector and the flexible cathode end plate that sets gradually, the orientation of flexible anode end plate one side of flexible anode collector is equipped with the fuel groove, flexible anode collector with flexible cathode collector is metal mesh electrode and is equipped with the terminal of drawing forth respectively, the terminal is drawn forth in the wiring is located flexible cathode end plate with the edge of flexible anode end plate.
Optionally, the flexible anode collector and the flexible cathode collector are stainless steel nets; and/or the thickness of the flexible anode collector and the flexible cathode collector is 0.1 mm-3 mm.
Optionally, the flexible anode end plate and the flexible cathode end plate are polydimethylsiloxane end plates; and/or the thickness of the flexible anode end plate is 2.6-8 mm, and the thickness of the flexible cathode end plate is 1-4 mm.
Optionally, a side of the flexible cathode end plate facing the flexible cathode collector electrode is provided with a first positioning groove, and the flexible cathode collector electrode is embedded in the first positioning groove; and/or one side of the flexible anode end plate facing the flexible anode collector electrode is provided with a second positioning groove, and the flexible anode collector electrode is embedded into the second positioning groove.
Optionally, the flexible anode collector, the flexible membrane electrode and the flexible cathode collector are pressed together.
Optionally, the fuel tank is integrally formed with the flexible anode end plate.
Optionally, the flexible anode end plate is provided with a liquid injection channel and a liquid outlet channel, and the liquid injection channel and the liquid outlet channel are respectively communicated with the side face of the flexible anode end plate and the fuel tank.
Optionally, the flexible membrane electrode includes a first flexible substrate, an anode diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, a cathode diffusion layer and a second flexible substrate, which are sequentially disposed, the anode diffusion layer and the anode catalyst layer are coatings sequentially formed on the first flexible substrate, and the cathode diffusion layer and the cathode catalyst layer are coatings sequentially formed on the second flexible substrate.
Optionally, the first flexible substrate and the second flexible substrate are carbon cloths.
Optionally, waterproof layers are packaged around the flexible anode end plate and the flexible cathode end plate.
The utility model provides a flexible direct methanol fuel cell, including the flexible positive pole end plate that sets gradually, flexible positive pole collecting electrode, flexible membrane electrode, flexible negative pole collecting electrode and flexible negative pole end plate, one side of flexible positive pole end plate towards flexible positive pole collecting electrode is equipped with the fuel tank, and flexible positive pole collecting electrode and flexible negative pole collecting electrode are metal mesh electrode and are equipped with the wiring respectively and draw forth the end, and the wiring is drawn forth the edge that the end is located flexible negative pole end plate and flexible positive pole end plate. This application adopts flexible end plate, flexible membrane electrode and uses the netted electrode of metal as the collecting electrode, can realize direct methanol fuel cell's whole flexibility, has effectively improved the applicability of direct methanol fuel cell in portable electronic equipment field.
Drawings
FIG. 1 is an exploded schematic view of a flexible direct methanol fuel cell according to one embodiment;
FIG. 2 is a schematic diagram of an assembled structure of the flexible direct methanol fuel cell shown in FIG. 1;
FIG. 3 is a schematic diagram of the flexible direct methanol fuel cell shown in FIG. 2 in a flexed state;
FIG. 4 is a front view of the flexible anode collector and the flexible cathode collector shown in FIG. 1;
fig. 5(a) and 5(b) are front and top views, respectively, of the flexible cathode end plate shown in fig. 1.
Detailed Description
The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.
In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
Fig. 1 is an exploded schematic view of a flexible direct methanol fuel cell according to an embodiment. Fig. 2 is a schematic view of an assembly structure of the flexible direct methanol fuel cell shown in fig. 1. As shown in fig. 1 and fig. 2, the flexible direct methanol fuel cell of the present embodiment includes a flexible anode end plate 11, a flexible anode collector 12, a flexible membrane electrode 13, a flexible cathode collector 14, and a flexible cathode end plate 15, which are sequentially disposed.
The flexible anode end plate 11 is provided with a fuel tank 111 on one side facing the flexible anode collector 12, the flexible anode collector 12 is provided with a first terminal lead-out terminal 121, the flexible cathode collector 14 is provided with a second terminal lead-out terminal 141, the first terminal lead-out terminal 121 and the second terminal lead-out terminal 141 are located at the edges of the flexible cathode end plate 15 and the flexible anode end plate 11, for example, the first terminal lead-out terminal 121 and the second terminal lead-out terminal 141 may exceed the edges of the flexible cathode end plate 15 and the flexible anode end plate 11, or grooves for exposing the first terminal lead-out terminal 121 and the second terminal lead-out terminal 141 are arranged at the edges of the flexible cathode end plate 15 and the flexible anode end plate 11, and the first terminal lead-out terminal 121 and the second terminal. The flexible anode collector 12 and the flexible cathode collector 14 are both metal mesh electrodes.
With the above structure, each flexible end plate, the metal mesh collector, and the flexible membrane electrode 13 have flexibility, and the entire flexibility of the direct methanol fuel cell can be realized. As shown in fig. 3, the flexible direct methanol fuel cell can be bent as a whole, which effectively improves the applicability of the direct methanol fuel cell in the field of portable electronic devices. Preferably, the flexible anode collector 12, the flexible membrane electrode 13 and the flexible cathode collector 14 are pressed together, so that the overall flexibility of the battery can be further improved.
As shown in fig. 1, 2 and 4, the flexible anode collector 12 and the flexible cathode collector 14 are both stainless steel meshes, including but not limited to 316 stainless steel, 304 stainless steel or other corrosion-resistant mesh-shaped conductive metal materials, which can normally transmit electrons while ensuring the flexibility of the dmfc. The thicknesses of the flexible anode collector 12 and the flexible cathode collector 14 are 0.1mm to 3mm, preferably 0.3mm, wherein the length and width of the main body parts of the flexible anode collector 12 and the flexible cathode collector 14 are 26mm × 26mm, the first terminal lead 121 and the second terminal lead 141 are located on the same side of the battery, and the length and width are 10mm × 5 mm. The metal mesh electrodes are directly used as the flexible anode collector 12 and the flexible cathode collector 14, methanol can be uniformly transmitted, the flexibility of the battery is ensured, and the flexible anode collector 12, the flexible cathode collector 14 and the flexible membrane electrode 13 are subjected to hot pressing, so that the flexible anode collector 12 and the flexible cathode collector 14 are in close contact with two sides of the flexible membrane electrode 13 to play a role in compression, and the collection and transmission of electrons by the flexible anode collector 12 and the flexible cathode collector 14 are facilitated.
As shown in fig. 5(a) and 5(b), the flexible cathode terminal plate 15 has a first positioning groove 152 on a side facing the flexible cathode collector 14, the shape of the first positioning groove 152 is adapted to the shape of the flexible cathode collector 14, and the depth of the first positioning groove 152 is smaller than or equal to the thickness of the flexible cathode collector 14. Referring to fig. 1, fig. 2 and fig. 5(a), the flexible cathode end plate 15 is provided with an oxygen inlet 151 penetrating through the flexible cathode end plate 15 in the first positioning groove 152, so as to provide oxygen to the cathode side of the flexible membrane electrode 13 for a reduction reaction, so that the cell performance is stable. When the battery is assembled, the flexible cathode collector 14 is embedded into the first positioning groove 152, which is helpful for positioning the flexible cathode collector 14, preventing the flexible cathode collector 14 from shifting, ensuring effective contact between two sides of the flexible cathode collector 14 and the flexible cathode end plate 15 and the flexible membrane electrode 13, and improving structural stability. Preferably, the thickness of the flexible cathode terminal plate is 1mm to 4 mm.
As shown in fig. 1, a side of the flexible anode end plate 11 facing the flexible anode collector 12 has a second positioning groove 112, the flexible anode collector 12 is embedded in the second positioning groove 112, a depth of the second positioning groove 112 is less than or equal to a thickness of the flexible anode collector 12, and the fuel tank 111 is located in the second positioning groove 112 and does not penetrate through the flexible anode end plate 11. Optionally, the fuel tank 111 is integrally formed with the flexible anode end plate 11. The flexible anode end plate 11 is provided with a liquid injection channel 113 and a liquid outlet channel 114, the liquid injection channel 113 and the liquid outlet channel 114 are respectively communicated with the side surface of the flexible anode end plate 11 and the fuel tank 111, and the liquid injection channel 113 and the liquid outlet channel 114 are used for transmitting the methanol solution to the fuel tank 111, so that the mass transfer of the methanol solution to the anode side of the flexible membrane electrode 13 is ensured. When assembling the battery, the flexible anode collector 12 is embedded into the second positioning groove 112, which is helpful for positioning the flexible anode collector 12, preventing the flexible anode collector 12 from shifting, and ensuring effective contact between the two sides of the flexible anode collector 12 and the flexible anode end plate 11 and the flexible membrane electrode 13, thereby improving the structural stability. Preferably, the thickness of the flexible anode end plate 11 is 2.6mm to 8mm, wherein when the depth of the second positioning groove 112 is 0.1mm, the depth of the fuel groove 111 is 2mm, and the thickness of the bottom wall of the fuel groove 111 is 0.5mm, the total thickness of the flexible anode end plate 11 is 2.6 mm; the depth of the second positioning groove 112 is 3mm, the depth of the fuel groove 111 is 3mm, the thickness of the bottom wall of the fuel groove 111 is 2mm, and the total thickness of the flexible anode end plate 11 is 8 mm.
The flexible anode collector electrode 12, the flexible membrane electrode 13 and the flexible cathode collector electrode 14 are limited from two sides through the first positioning groove 152 and the second positioning groove 112 respectively, and the stability of the structure is better. In practical implementation, the sum of the depth of the first positioning groove 152 and the depth of the second positioning groove 112 is only required to be less than or equal to the sum of the thicknesses of the flexible anode collector 12, the flexible membrane electrode 13 and the flexible cathode collector 14, and the sum is not limited to the foregoing. In another embodiment, the positioning groove may be only disposed on the side of the flexible cathode end plate 15 facing the flexible cathode collector 14, or the positioning groove may be only disposed on the side of the flexible anode end plate 11 facing the flexible anode collector 12, and after the flexible anode collector 12, the flexible membrane electrode 13, and the flexible cathode collector 14 are pressed together, the positioning groove on one side may also play a role in limiting. Optionally, the flexible anode end plate 11 and the flexible cathode end plate 15 are Polydimethylsiloxane (PDMS) end plates, and may also be made of elastomer materials such as rubber. Preferably, the length and width of the flexible anode end plate 11 and the flexible cathode end plate 15 are 40mm × 40mm, and the length and width of the oxygen inlet 151 on the flexible cathode end plate 15 and the fuel tank 111 on the flexible anode end plate 11 are 11mm × 11 mm. After the flexible anode end plate 11 is formed, one side surface of the flexible anode end plate 11 penetrates in the same direction to form a liquid injection channel 113 and a liquid outlet channel 114.
As shown in fig. 1, the flexible membrane electrode 13 includes a first flexible substrate (not shown), an anode diffusion layer 131, an anode catalyst layer 132, a proton exchange membrane 133, a cathode catalyst layer 134, a cathode diffusion layer 135, and a second flexible substrate (not shown) which are sequentially disposed. The first flexible substrate is used as a substrate of the anode diffusion layer 131, the anode catalytic layer 132 is formed on the anode diffusion layer 131, the second flexible substrate is used as a substrate of the cathode diffusion layer 135, and the cathode catalytic layer 134 is formed on the cathode diffusion layer 135. In practical implementation, the first flexible substrate and the second flexible substrate are made of corrosion-resistant flexible porous materials such as carbon cloth, so that the purpose of membrane electrode flexibility can be achieved while effective transmission of electrons is ensured. The length and width of the carbon cloth are preferably 15mm multiplied by 15mm, when the diffusion layer and the catalyst layer are prepared, firstly, the carbon cloth is sprayed with a diffusing agent to prepare a microporous diffusion layer, and then, catalyst slurry is continuously loaded on one side of the diffusion layer to form the catalyst layer, so that the flexible electrode is effectively formed. Fuel and oxygen are respectively introduced from the anode side and the cathode side of the flexible membrane electrode 13, the fuel reacts in the anode catalyst layer 132 to release electrons, and the electrons are collected at the anode side and then conducted to the cathode side through an external circuit, so that current is formed. A flexible anode collector 12 is disposed on the anode side of the flexible membrane electrode 13 and a flexible cathode collector 14 is disposed on the cathode side of the flexible membrane electrode 13 for collecting and conducting electrons.
The proton exchange membrane 133 may be a Nafion series perfluorosulfonic acid proton exchange membrane. When assembling the flexible membrane electrode 13, the various layer structures are sequentially stacked on the tin foil paper in sequence, and then the tin foil paper is folded and packaged, so that the materials inside are not deviated, and the electrodes can be prevented from being damaged in the hot pressing process. And then placing the packaged tin foil paper in a hot press with the temperature of 135 ℃ and the pressure of 0.6MPa for mechanical superposition pressing up and down for 4min, thus finishing the assembly of the flexible membrane electrode 13. Similarly, when the flexible anode collector 12, the flexible membrane electrode 13 and the flexible cathode collector 14 are assembled, the flexible anode collector 12, the flexible membrane electrode 13 and the flexible cathode collector 14 are sequentially stacked on the tin foil paper, hot-pressing lamination is performed in the same manner, and the temperature, the pressure and the time of pressing can be adjusted as required.
When assembling the battery, firstly, the flexible membrane electrode 13 is obtained by hot pressing, and then the flexible membrane electrode 13, the flexible cathode collector electrode 14 and the flexible anode collector electrode 12 are hot pressed. And then, uniformly smearing waterproof glue, such as polyurethane glue, on the flexible cathode collector 14 and the flexible anode collector 12, and then respectively placing the flexible cathode collector 14 and the flexible anode collector 12 in positioning grooves of the flexible cathode end plate 15 and the flexible anode end plate 11 for embedding and fixing. And finally, waterproof glue is coated on the peripheries of the flexible cathode end plate 15 and the flexible anode end plate 11 to form a waterproof layer, so that the waterproof layer not only has the function of preventing liquid leakage, but also has the function of clamping the battery, and all the parts are fixed into a whole.
The utility model provides a flexible direct methanol fuel cell, including the flexible positive pole end plate that sets gradually, flexible positive pole collecting electrode, flexible membrane electrode, flexible negative pole collecting electrode and flexible negative pole end plate, one side of flexible positive pole end plate towards flexible positive pole collecting electrode is equipped with the fuel tank, and flexible positive pole collecting electrode and flexible negative pole collecting electrode are metal mesh electrode and are equipped with the wiring respectively and draw forth the end, and the wiring is drawn forth the edge that the end is located flexible negative pole end plate and flexible positive pole end plate. This application adopts flexible end plate, flexible membrane electrode and uses the netted electrode of metal as the collecting electrode, can realize direct methanol fuel cell's whole flexibility, has effectively improved the applicability of direct methanol fuel cell in portable electronic equipment field.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. 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 concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (10)
1. The utility model provides a flexible direct methanol fuel cell, its characterized in that, including flexible anode end plate, flexible anode collector, flexible membrane electrode, flexible cathode collector and the flexible cathode end plate that sets gradually, the orientation of flexible anode end plate one side of flexible anode collector is equipped with the fuel groove, flexible anode collector with flexible cathode collector is metal mesh electrode and is equipped with the wiring respectively and draws forth the end, the wiring draw forth the end and be located flexible cathode end plate with the edge of flexible anode end plate.
2. The flexible direct methanol fuel cell of claim 1 wherein the flexible anode current collector and the flexible cathode current collector are stainless steel mesh; and/or the thickness of the flexible anode collector and the flexible cathode collector is 0.1 mm-3 mm.
3. The flexible direct methanol fuel cell of claim 1 or 2 wherein the flexible anode end plate and the flexible cathode end plate are polydimethylsiloxane end plates; and/or the thickness of the flexible anode end plate is 2.6-8 mm, and the thickness of the flexible cathode end plate is 1-4 mm.
4. The flexible direct methanol fuel cell of claim 1 wherein the side of the flexible cathode end plate facing the flexible cathode collector has a first locator groove into which the flexible cathode collector is embedded; and/or one side of the flexible anode end plate facing the flexible anode collector electrode is provided with a second positioning groove, and the flexible anode collector electrode is embedded into the second positioning groove.
5. The flexible direct methanol fuel cell of claim 1 wherein the flexible anode current collector, the flexible membrane electrode, and the flexible cathode current collector are pressed together.
6. The flexible direct methanol fuel cell of claim 1 wherein the fuel tank is integrally formed with the flexible anode end plate.
7. The flexible direct methanol fuel cell of claim 1 or 6 wherein the flexible anode end plate is provided with a liquid injection channel and a liquid outlet channel, the liquid injection channel and the liquid outlet channel respectively communicating the side of the flexible anode end plate with the fuel tank.
8. The flexible direct methanol fuel cell according to claim 1, wherein the flexible membrane electrode comprises a first flexible substrate, an anode diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, a cathode diffusion layer and a second flexible substrate, which are sequentially disposed, the anode diffusion layer and the anode catalyst layer are coatings sequentially formed on the first flexible substrate, and the cathode diffusion layer and the cathode catalyst layer are coatings sequentially formed on the second flexible substrate.
9. The flexible direct methanol fuel cell of claim 8 wherein the first and second flexible substrates are carbon cloths.
10. The flexible direct methanol fuel cell of claim 1 wherein the flexible anode end plate and the flexible cathode end plate are encapsulated around a waterproof layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649972.7U CN213401270U (en) | 2020-11-16 | 2020-11-16 | Flexible direct methanol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649972.7U CN213401270U (en) | 2020-11-16 | 2020-11-16 | Flexible direct methanol fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN213401270U true CN213401270U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022649972.7U Active CN213401270U (en) | 2020-11-16 | 2020-11-16 | Flexible direct methanol fuel cell |
Country Status (1)
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|---|---|
| CN (1) | CN213401270U (en) |
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- 2020-11-16 CN CN202022649972.7U patent/CN213401270U/en active Active
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