CN109449455A - A kind of membrane electrode of low internal resistance and fuel cell containing the membrane electrode - Google Patents
A kind of membrane electrode of low internal resistance and fuel cell containing the membrane electrode Download PDFInfo
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- CN109449455A CN109449455A CN201811227703.2A CN201811227703A CN109449455A CN 109449455 A CN109449455 A CN 109449455A CN 201811227703 A CN201811227703 A CN 201811227703A CN 109449455 A CN109449455 A CN 109449455A
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- cathode
- plate
- anode
- diffusion layer
- electrode
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0232—Metals or alloys
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- 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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- Life Sciences & Earth Sciences (AREA)
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- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a kind of membrane electrode of low internal resistance and contain the fuel cell of the membrane electrode.The internal resistance of existing fuel cell is larger, and needs to clamp membrane electrode mode by substrate and reduce internal resistance value, the problem that liquid in-out can be brought obstructed in clamping process.A kind of membrane electrode of the present invention, including anode electrode, proton exchange membrane, cathode electrode and metal mesh.The anode electrode is made of anode diffusion layer and anode catalyst layer.The anode catalyst layer is contacted with the side of proton exchange membrane towards plate.The cathode electrode is made of cathode catalysis layer and cathode diffusion layer.The cathode catalysis layer is contacted with the side of proton exchange membrane towards cathode plate.Metal mesh is embedded on the lateral surface of anode diffusion layer and cathode diffusion layer.The present invention greatly reduces the contact resistance of membrane electrode and cathode-anode plate by way of being embedded in metal mesh on the two sides in membrane electrode.Fuel supply is discharged very smooth with product in the present invention.
Description
Technical field
The invention belongs to field of fuel cell technology, and in particular to a kind of membrane electrode of low internal resistance and contain the membrane electrode
Fuel cell.
Background technique
Fuel cell is a kind of device that can directly convert chemical energy to electric energy, because its energy conversion efficiency is high, nothing is made an uproar
It is sound, pollution-free, becoming ideal battery of new generation.
Fuel cell mainly consists of three parts, i.e. plate, cathode plate and membrane electrode.Membrane electrode be again successively by
This five-layer structure of anode diffusion layer, anode catalyst layer, proton exchange membrane, cathode catalysis layer, cathode diffusion layer composition.Fuel and oxygen
Change gas to be passed through from anode-side and cathode side respectively.Fuel reacts ejected electron in anode catalyst layer, and electronics is first collected in anode-side,
Cathode side is transmitted to using external circuit so as to form electric current.
However in the actual process, the electric current conduction of fuel cell is the process of multimedium conduction, and electronics is first from sun
Pole Catalytic Layer generates, and the porous media carbon-coating through anode diffusion layer is conducted to plate, then is conducted into cathode by external circuit
Pole plate finally reaches cathode catalysis layer and cathode oxidation gas is sent out to conducted again into the porous media carbon-coating of cathode diffusion layer
Raw electrochemical reaction.In this conductive process, the height of electric current conduction efficiency directly influences the internal resistance size of integral battery,
To influence the output performance of integral battery.And the contact resistance size between pole plate and diffusion layer is to influence entire battery conduction
The factor of efficiency most critical.This is because traditional diffusion layer is usually to be made of porous carbon paper or carbon cloth, it can with certain
Compressibility, and surface is also relatively rough.In the contact with pole plate, effective contact area is smaller.In order to solve this
One problem is typically clamped pole plate and membrane electrode by biggish mechanical force, however this biggish mechanical force can be one
Determine the hole for compressing the certain regional areas of diffusion layer in degree, causes the blocking and unevenness that fuel is supplied and product is discharged
It is even, in addition can also damage spreading layer function.
Summary of the invention
The purpose of the present invention is to provide a kind of membrane electrode of low internal resistance and contain the fuel cell of the membrane electrode.
A kind of membrane electrode of the present invention, including anode electrode, proton exchange membrane, cathode electrode and metal mesh.The anode
Electrode is made of anode diffusion layer and anode catalyst layer.The anode catalyst layer and proton exchange membrane is towards the side of plate
Face contact.The cathode electrode is made of cathode catalysis layer and cathode diffusion layer.The cathode catalysis layer and proton exchange
Film is contacted towards the side of cathode plate.Metal mesh is embedded on the lateral surface of anode diffusion layer and cathode diffusion layer.
Further, the lateral surface of metal mesh and the lateral surface of anode diffusion layer are concordant on anode diffusion layer.Cathode diffusion
The lateral surface of metal mesh and the lateral surface of cathode diffusion layer are concordant on layer.
Further, the mesh materials are stainless steel, and appearance is provided with coating.The material of the coating is
Gold, platinum or titanium nitride.
Further, the length and width dimensions of the anode electrode, cathode electrode and metal mesh are equal.Two metal meshes lead to respectively
Cross heat pressing process insertion anode diffusion layer, cathode diffusion layer.
A kind of fuel cell, anode end plate, plate, membrane electrode, cathode plate and yin including being arranged successively setting
Extreme plate.Plate is contacted with the metal mesh on anode diffusion layer.Cathode plate is contacted with the metal mesh on cathode diffusion layer.
Further, pole plate limiting slot is offered on the opposite flank of the anode end plate and cathode end plate.Anode pole
Plate is embedded in the pole plate limiting slot on anode end plate.Cathode plate is embedded in the pole plate limiting slot in cathode end plate.
Further, it is provided on the plate and is integrally formed with plate, and stretch out outside anode end plate
Anode lead.It is provided on the cathode plate and is integrally formed with cathode plate, and the cathode stretched out outside cathode end plate draws
Shaping.Multiple through-holes or groove are offered on plate and cathode plate.
Further, the rubber mat that ring lives plate is provided between the anode end plate and membrane electrode.Cathode end plate
The rubber mat that ring lives cathode plate is provided between membrane electrode.
Further, four angles of the anode end plate and four angles of cathode end plate are fixed by bolt and nut respectively.
Further, the middle part of the anode end plate and cathode end plate offers through slot.
The invention has the advantages that:
1, the present invention greatly reduces membrane electrode and yin-yang by way of being embedded in metal mesh on the two sides in membrane electrode
The contact resistance of pole plate improves electric current collection effect.
2, since membrane electrode is not by big pressing force in the present invention, therefore the deformation of diffusion layer is smaller in membrane electrode, fuel
Supply is discharged more smooth compared to existing fuel cell with product.
3, the present invention when installation due to not needing to apply big clamping force, therefore assembly and disassembly are compared to existing fuel cell
It is more convenient and efficient.
Detailed description of the invention
Fig. 1 is the perspective view of fuel cell in the present invention；
Fig. 2 is the explosive view of fuel cell in the present invention；
Fig. 3 is the cross-sectional view of fuel cell in the present invention；
Fig. 4 is the schematic diagram of membrane electrode in the present invention；
Fig. 5 is the schematic diagram of metal mesh in the present invention.
In figure, 1- anode end plate, 2- plate, 3- metal mesh, 4- rubber mat, 5- anode electrode, 5a- anode diffusion layer,
5b- anode catalyst layer, 6- proton exchange membrane, 7- cathode electrode, 5- anode electrode, 7a- cathode diffusion layer, 7b- cathode catalysis layer,
8- cathode plate, 9- cathode end plate.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
As shown in Figure 1,2 and 3, a kind of fuel cell, anode end plate 1, plate 2, film including being arranged successively setting
Electrode, cathode plate 8 and cathode end plate 9.The middle part of anode end plate 1 and cathode end plate 9 is offered for being passed through fuel or row
Except the through slot of product.Pole plate limiting slot is offered on the opposite flank of anode end plate 1 and cathode end plate 9.Plate 2 is embedded in
In pole plate limiting slot on anode end plate 1.Cathode plate 8 is embedded in the pole plate limiting slot in cathode end plate 9.On plate 2
It is provided with and is integrally formed with plate 2, and stretch out the anode lead outside anode end plate 1.It is provided on cathode plate 8 and yin
Pole pole plate 8 is integrally formed, and stretches out the cathode lead outside cathode end plate 9.
The rubber mat 4 that ring lives plate 2 is provided between anode end plate 1 and membrane electrode.Between cathode end plate 9 and membrane electrode
It is provided with the rubber mat that ring lives cathode plate 8.The case where rubber mat 4 can guarantee the leakproofness of fuel cell side, avoid leakage hair
It is raw.Multiple through-holes or groove for by fuel are offered on plate 2 and cathode plate 8.
As shown in Fig. 2,3,4 and 5, membrane electrode includes anode electrode 5, proton exchange membrane 6, cathode electrode 7 and metal mesh 3.
Anode electrode 5 is made of anode diffusion layer 5a and anode catalyst layer 5b.Anode catalyst layer 5b and proton exchange membrane 6 are towards anode pole
The side of plate 2 contacts.Cathode electrode 7 is made of cathode catalysis layer 7b and cathode diffusion layer 7a.Cathode catalysis layer 7b and proton are handed over
Film 6 is changed to contact towards the side of cathode plate 8.Pass through hot pressing work on the lateral surface of anode diffusion layer 5a and cathode diffusion layer 7a
Skill is embedded with metal mesh.The lateral surface of metal mesh is concordant with the lateral surface of anode diffusion layer 5a on anode diffusion layer 5a, and and anode
Pole plate 2 contacts.The lateral surface of metal mesh is concordant with the lateral surface of cathode diffusion layer 7a on cathode diffusion layer 7a, and and cathode plate
8 contacts.The length and width dimensions of anode electrode 5, cathode electrode 7 and metal mesh 3 are equal.
3 material of metal mesh is stainless steel, and appearance is provided with coating.The material of coating is gold, platinum or titanium nitride.Setting applies
The mode of layer is sputtering or chemical plating.To guarantee that metal mesh 3 has excellent corrosion resistance and electric conductivity.
Four angles of anode end plate 1 are fixed by bolt and nut respectively with four angles of cathode end plate 9.Bolt and nut is tightened
To no leakage.In the present invention, since two pieces of metal meshes are respectively embedded into anode diffusion layer 5a, cathode diffusion layer 7a, therefore metal mesh with
The contact area of corresponding diffusion layer is larger, and the electronics generated in each tiny area in diffusion layer can be received by fine and close wire
Collection, so that metal mesh and the contact resistance of corresponding diffusion layer are smaller.Two pieces of metal meshes divide with plate 2, cathode plate 8
It does not contact.Since metal mesh, plate 2 and cathode plate 8 are metal, therefore two pieces of metal meshes and plate 2, cathode pole
The contact resistance of plate 8 is smaller.This allows for that the present invention overcomes electron-transport efficiency between pole plate and membrane electrode in the prior art
Low problem thus greatly reduces the internal resistance of fuel cell, increases the current collection efficiency of fuel cell, increases fuel
The performance capabilities of battery.
Further, since internal resistance of the invention is smaller, thus plate is not needed with cathode plate by applying to membrane electrode
Add very big clamping force to improve electron-transport efficiency, avoiding problems the holes on diffusion layer to be compressed.Therefore, of the invention
Fuel supply is discharged more smooth compared to existing fuel cell with product.
On this basis, since plate and cathode plate are not needed by applying very big clamping force to membrane electrode,
Therefore assembly and disassembly of the invention are more convenient compared to existing fuel cell and efficient.This reduces of the invention to be produced into
This.
Claims (10)
1. a kind of membrane electrode of low internal resistance, including anode electrode, proton exchange membrane and cathode electrode；It is characterized by also including
Metal mesh；The anode electrode is made of anode diffusion layer and anode catalyst layer；The anode catalyst layer and proton exchange
Film is contacted towards the side of plate；The cathode electrode is made of cathode catalysis layer and cathode diffusion layer；The yin
Pole Catalytic Layer is contacted with the side of proton exchange membrane towards cathode plate；On the lateral surface of anode diffusion layer and cathode diffusion layer
Embedded with metal mesh.
2. a kind of membrane electrode of low internal resistance according to claim 1, it is characterised in that: metal mesh is outer on anode diffusion layer
Side is concordant with the lateral surface of anode diffusion layer；The lateral surface of the lateral surface of metal mesh and cathode diffusion layer is flat on cathode diffusion layer
Together.
3. a kind of membrane electrode of low internal resistance according to claim 1, it is characterised in that: the mesh materials are stainless
Steel, and appearance is provided with coating；The material of the coating is gold, platinum or titanium nitride.
4. a kind of membrane electrode of low internal resistance according to claim 1, it is characterised in that: the anode electrode, cathode electrode
And the length and width dimensions of metal mesh are equal；Two metal meshes are embedded in anode diffusion layer, cathode diffusion layer by heat pressing process respectively.
5. containing a kind of fuel cell of membrane electrode as described in claim 1, it is characterised in that: further include being arranged successively setting
Anode end plate, plate, cathode plate and cathode end plate；Plate is contacted with the metal mesh on anode diffusion layer；Yin
Pole pole plate is contacted with the metal mesh on cathode diffusion layer.
6. a kind of fuel cell according to claim 5, it is characterised in that: the anode end plate and cathode end plate it is opposite
Pole plate limiting slot is offered on side；Plate is embedded in the pole plate limiting slot on anode end plate；Cathode plate insertion yin
In pole plate limiting slot on extreme plate.
7. a kind of fuel cell according to claim 5, it is characterised in that: be provided on the plate and anode
Pole plate is integrally formed, and stretches out the anode lead outside anode end plate；It is provided on cathode plate and is integrally formed with cathode plate,
And stretch out the cathode lead outside cathode end plate；Multiple through-holes or groove are offered on plate and cathode plate.
8. a kind of fuel cell according to claim 5, it is characterised in that: set between the anode end plate and membrane electrode
It is equipped with the rubber mat that ring lives plate；The rubber mat that ring lives cathode plate is provided between cathode end plate and membrane electrode.
9. a kind of fuel cell according to claim 5, it is characterised in that: four angles of the anode end plate and cathode terminal
Four angles of plate are fixed by bolt and nut respectively.
10. a kind of fuel cell according to claim 5, it is characterised in that: in the anode end plate and cathode end plate
Portion offers through slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227703.2A CN109449455A (en) | 2018-10-22 | 2018-10-22 | A kind of membrane electrode of low internal resistance and fuel cell containing the membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227703.2A CN109449455A (en) | 2018-10-22 | 2018-10-22 | A kind of membrane electrode of low internal resistance and fuel cell containing the membrane electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109449455A true CN109449455A (en) | 2019-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227703.2A Pending CN109449455A (en) | 2018-10-22 | 2018-10-22 | A kind of membrane electrode of low internal resistance and fuel cell containing the membrane electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109449455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477909A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| CN115673304A (en) * | 2022-12-30 | 2023-02-03 | 永红保定铸造机械有限公司 | Device and method for judging molten metal liquid level position through current |
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| CN103401003A (en) * | 2013-07-17 | 2013-11-20 | 南京大学昆山创新研究院 | Gas diffusion layer of PEMFC (Proton Exchange Membrane Fuel Cell) and preparation method thereof |
| CN203932216U (en) * | 2014-05-30 | 2014-11-05 | 杭州电子科技大学 | Based on the stacked passive direct methanol fuel cell group of polymer bipolar end plates |
| CN104600323A (en) * | 2015-01-22 | 2015-05-06 | 哈尔滨工业大学 | High-output power direct methanol fuel cell membrane electrode based on carbon nanotube paper anode |
| CN107681164A (en) * | 2017-09-25 | 2018-02-09 | 深圳市南科燃料电池有限公司 | Gas diffusion layers and preparation method thereof and fuel cell |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401003A (en) * | 2013-07-17 | 2013-11-20 | 南京大学昆山创新研究院 | Gas diffusion layer of PEMFC (Proton Exchange Membrane Fuel Cell) and preparation method thereof |
| CN203932216U (en) * | 2014-05-30 | 2014-11-05 | 杭州电子科技大学 | Based on the stacked passive direct methanol fuel cell group of polymer bipolar end plates |
| CN104600323A (en) * | 2015-01-22 | 2015-05-06 | 哈尔滨工业大学 | High-output power direct methanol fuel cell membrane electrode based on carbon nanotube paper anode |
| CN107681164A (en) * | 2017-09-25 | 2018-02-09 | 深圳市南科燃料电池有限公司 | Gas diffusion layers and preparation method thereof and fuel cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477909A (en) * | 2020-05-26 | 2020-07-31 | 上海交通大学 | Air-permeable bipolar plate suitable for fuel cell stack and fuel cell stack |
| CN115673304A (en) * | 2022-12-30 | 2023-02-03 | 永红保定铸造机械有限公司 | Device and method for judging molten metal liquid level position through current |
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Application publication date: 20190308 |