CN208706769U - A kind of fuel battery gas diffusion layer and fuel cell - Google Patents
A kind of fuel battery gas diffusion layer and fuel cell Download PDFInfo
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- CN208706769U CN208706769U CN201821332040.6U CN201821332040U CN208706769U CN 208706769 U CN208706769 U CN 208706769U CN 201821332040 U CN201821332040 U CN 201821332040U CN 208706769 U CN208706769 U CN 208706769U
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- gas diffusion
- ontology
- groove
- diffusion layer
- fuel battery
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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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Abstract
The utility model discloses a kind of fuel battery gas diffusion layer and fuel cell, the fuel battery gas diffusion layer includes ontology, at least one groove is distributed in the upper surface of ontology, and the cross-sectional area of groove gradually becomes smaller from top to bottom along the thickness direction of ontology.The fuel battery gas diffusion layer processing and fabricating of the utility model is simple; only groove need to be opened up on gas diffusion layers ontology; and the cross-sectional area of groove gradually becomes smaller from top to bottom along the thickness direction of ontology; the horizontal and vertical aqueous vapor transport capability of gas diffusion layers can be improved simultaneously in this way, the appearance of water logging phenomenon is prevented, be flooded catalyst not and influence utilization rate; and groove is compared with through-hole; with incomplete permeability, so that guard catalyst is not destroyed by air-flow, catalyst utilization is improved.Therefore, the fuel cell including gas diffusion layers provided by the utility model increases in performance, reliability and service life various aspects.
Description
Technical field
The utility model relates to fuel cell fields, more particularly to a kind of fuel battery gas diffusion layer and fuel electricity
Pond.
Background technique
As world population is continuously increased and the process of industrialization of developing country is accelerated, environmental pollution and energy crisis
The problem of grow in intensity, greatly develop the common recognition that new energy technology has become human society.Proton Exchange Membrane Fuel Cells
(PEMFC) it is led due to the advantages that its is high-efficient, energy density is big, operating temperature is low, starting speed is fast in mobile devices such as automobiles
Domain has a wide range of applications.
Although Proton Exchange Membrane Fuel Cells has begun the commercialized development for realizing early stage as power train in vehicle application, must
It must be subjected to the test of the complex working conditions such as high current, cold start-up, variable working condition, air pollution and impurity and harsh environment, wherein fuel
Battery water management will be its major way and challenge for improving performance, power density and durability.
Gas diffusion layers are the key components for guiding reaction gas to enter Catalytic Layer and react, while product water being discharged,
It is the important object of water management.Especially under high current densities, the water logging problem in diffusion layer is even more serious.
Currently, the method for report has processes cylinder in gas diffusion layers in order to improve the drainage performance of gas diffusion layers
Shape through-hole, but this method, which can cause water to be gathered in puncture site, floods catalyst to reduce catalyst utilization, simultaneously
Also it is unfavorable for the protection to catalyst；It is that gas diffusion layers are made of multilayered structure there are also method, is wherein processed in superstructure
Cylindrical hole provides express passway for longitudinal transmission of aqueous vapor, but the preparation of this gas diffusion layers is complicated, and no pair
Hole makes full use of.
Utility model content
(1) technical problems to be solved
The purpose of the utility model is to provide a kind of fuel battery gas diffusion layer and fuel cells, it is intended at least solve existing
There is one of technical problem present in technology or the relevant technologies.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of fuel battery gas diffusion layer, including ontology, institute
The upper surface for stating ontology is distributed at least one groove, the cross-sectional area of the groove along the ontology thickness direction from upper and
Under gradually become smaller.
Further, the bottom of the groove is close to the lower surface of the ontology.
Further, the groove is cone tank.
Further, the vertex of the cone tank is on the lower surface of the ontology.
Further, the cone angle of the cone tank is 20 °~160 °.
Further, the groove is formed by stepped hole.
Further, the ontology is the carbon fiber layer of single layer.
Further, the surface of the groove is equipped with hydrophobic coating.
Further, the groove is the identical groove of multiple shapes, is uniformly distributed on the body.
The utility model also provides a kind of fuel cell, including any of the above-described kind of fuel battery gas diffusion layer.
(3) beneficial effect
Fuel battery gas diffusion layer processing and fabricating provided by the utility model is simple, it is only necessary on gas diffusion layers ontology
Groove is opened up, and the cross-sectional area of groove gradually becomes smaller from top to bottom along the thickness direction of ontology, can improve gas simultaneously in this way
The horizontal and vertical aqueous vapor transport capability of diffusion layer, prevents the appearance of water logging phenomenon, makes catalyst below gas diffusion layers not
It is flooded and influences utilization rate, and groove has incomplete permeability, so that guard catalyst is not by air-flow compared with through-hole
It destroys, improves catalyst utilization.Therefore, the fuel cell including gas diffusion layers provided by the utility model, performance,
Reliability and service life various aspects increase.
Detailed description of the invention
Fig. 1 is the longitudinal section signal of first preferred embodiment of fuel battery gas diffusion layer provided by the utility model
Figure；
Fig. 2 is the longitudinal section signal of second preferred embodiment of fuel battery gas diffusion layer provided by the utility model
Figure；
Fig. 3 is the longitudinal section signal of the third preferred embodiment of fuel battery gas diffusion layer provided by the utility model
Figure；
In figure, 1- ontology；2- groove；3- hydrophobic coating；4- cone tank；5- stepped hole.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Example is not intended to limit the scope of the present invention for illustrating the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection is also possible to be electrically connected or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements be can be, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Fig. 1 shows first preferred embodiment of fuel battery gas diffusion layer provided by the utility model.Such as Fig. 1 institute
Show, which includes ontology 1, and the upper surface of ontology 1 is distributed at least one groove 2, groove 2 it is transversal
Area gradually becomes smaller from top to bottom along the thickness direction of ontology 1.
Wherein, ontology 1 can be the gas diffusion layers of existing disposable type, and the number of groove 2 is at least one, this reality
The protection scope applied in example and be illustrated for 1, but be not intended to limit the utility model.
In the present embodiment, the cross-sectional area of groove 2 gradually becomes smaller from top to bottom along the thickness direction of ontology 1, with same volume
Long-pending cylindrical hole is compared, and lateral area is bigger, can improve the horizontal and vertical aqueous vapor transport capability of gas diffusion layers simultaneously in this way,
The appearance for preventing water logging phenomenon makes the catalyst below gas diffusion layers be not easy to be flooded, and groove 2 has compared with through-hole
There is incomplete permeability, so that guard catalyst is not destroyed by air-flow, improves catalyst utilization.
Further, in this embodiment the bottom of groove 2 is close to the lower surface of ontology 1.The depth of groove 2 is deeper, supplies water
The area of gas transmission is bigger, but to guarantee otherwise groove 2 will not easily cause water aggregation and flood catalyst through ontology 1.
Further, in this embodiment ontology 1 is the carbon fiber layer of single layer.Both the good aqueous vapor of gas diffusion layers can have been realized
Laser propagation effect, but processing and fabricating is simple, it is convenient and practical.
Further, in this embodiment the surface of groove 2 is equipped with hydrophobic coating 3.Hydrophobic coating 3 can play enhancing draining
Effect, avoid water logging.The material of hydrophobic coating 3 can be polytetrafluoroethylene (PTFE) or other hydrophobic coatings.
Fig. 2 shows second preferred embodiments of fuel battery gas diffusion layer provided by the utility model.Such as Fig. 2 institute
Show, which includes ontology 1, at least one cone tank 4 is distributed in the upper surface of ontology 1.The present embodiment
In the protection scope that is illustrated, but be not intended to limit the utility model for 5.
Further, in this embodiment the vertex of cone tank 4 is on the lower surface of ontology 1.At this time the depth of cone tank 4 with
The thickness of ontology 1 is identical, ontology 1 not by it is perforative under the premise of have reached the upper limit, effectively improve gas diffusion layers transverse direction
With longitudinal aqueous vapor transport capability, the appearance of water logging phenomenon is prevented, while guard catalyst is not destroyed by air-flow, improves catalyst
Utilization rate.
Further, in this embodiment the cone angle of cone tank 4 is 30 °.Too small cone angle can make the volume mistake of cone tank
Small, difficulty of processing is big and effect is little, and excessive cone angle can make the volume of cone tank excessive, and difficulty of processing is big and to need
The hypervolia to be transported and the discharge for influencing water, while the breakage of ontology is easily caused, therefore within the scope of 20 °~160 ° preferably.
Further, in this embodiment the shape of 5 cone tanks 4 is identical, it is evenly distributed on ontology 1.4 shape of cone tank
Identical and be uniformly distributed, so that gas diffusion layers are more uniform when carrying out aqueous vapor transmission, laser propagation effect is more preferable.
Further, in this embodiment ontology 1 is the carbon fiber layer of single layer.Both the good aqueous vapor of gas diffusion layers can have been realized
Laser propagation effect, but processing and fabricating is simple, it is convenient and practical.
Further, in this embodiment the surface of cone tank 4 is equipped with hydrophobic coating 3.Hydrophobic coating 3 can play enhancing row
The effect of water, avoids water logging.The material of hydrophobic coating 3 can be polytetrafluoroethylene (PTFE) or other hydrophobic coatings.
Fig. 3 shows the third preferred embodiment of fuel battery gas diffusion layer provided by the utility model.It is with
The difference of one preferred embodiment is that groove 2 is formed by stepped hole 5.Stepped hole 5 can expand aqueous vapor transmission area, promote gas
The aqueous vapor transport capacity of body diffused layer.
The utility model also provides a kind of fuel cell, including any fuel cell in above three preferred embodiment
Gas diffusion layers, naturally it is also possible to for other any fuel cell gas diffusions belonged within scope of protection of the utility model
Layer.The fuel battery performance of the utility model is good, and reliability and service life are above existing fuel cell.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of fuel battery gas diffusion layer, which is characterized in that including ontology, the upper surface of the ontology is distributed at least one
The cross-sectional area of a groove, the groove gradually becomes smaller from top to bottom along the thickness direction of the ontology.
2. fuel battery gas diffusion layer according to claim 1, which is characterized in that the bottom of the groove is close to described
The lower surface of ontology.
3. fuel battery gas diffusion layer according to claim 1, which is characterized in that the groove is cone tank.
4. fuel battery gas diffusion layer according to claim 3, which is characterized in that the vertex of the cone tank is described
On the lower surface of ontology.
5. fuel battery gas diffusion layer according to claim 3, which is characterized in that the cone angle of the cone tank is 20 °
~160 °.
6. fuel battery gas diffusion layer according to claim 1, which is characterized in that the groove is formed by stepped hole.
7. fuel battery gas diffusion layer according to claim 1, which is characterized in that the ontology is the carbon fiber of single layer
Layer.
8. fuel battery gas diffusion layer according to claim 1, which is characterized in that the surface of the groove is equipped with hydrophobic
Coating.
9. fuel battery gas diffusion layer according to claim 1, which is characterized in that the groove is that multiple shapes are identical
Groove, be uniformly distributed on the body.
10. a kind of fuel cell, which is characterized in that including the described in any item fuel battery gas diffusion layers of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821332040.6U CN208706769U (en) | 2018-08-17 | 2018-08-17 | A kind of fuel battery gas diffusion layer and fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821332040.6U CN208706769U (en) | 2018-08-17 | 2018-08-17 | A kind of fuel battery gas diffusion layer and fuel cell |
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| CN208706769U true CN208706769U (en) | 2019-04-05 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112425A (en) * | 2019-04-18 | 2019-08-09 | 上海交通大学 | The gas diffusion layers of one proton exchanging film fuel battery |
| CN112072119A (en) * | 2020-08-06 | 2020-12-11 | 江苏大学 | Fuel cell gas diffusion layer structure and processing method thereof |
| CN112117465A (en) * | 2020-08-06 | 2020-12-22 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| CN112467152A (en) * | 2020-11-25 | 2021-03-09 | 上海电气集团股份有限公司 | Gas diffusion layer, fuel cell, processing die and processing technology |
| CN113178590A (en) * | 2021-03-31 | 2021-07-27 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| CN113178591A (en) * | 2021-03-31 | 2021-07-27 | 江苏大学 | Gas diffusion layer for proton exchange membrane fuel cell and processing technology thereof |
| WO2022027944A1 (en) * | 2020-08-06 | 2022-02-10 | 江苏大学 | Fuel-cell gas diffusion layer structure and processing method therefor |
| CN114864960A (en) * | 2022-05-30 | 2022-08-05 | 江苏大学 | Metal gas diffusion layer and manufacturing method and application thereof |
| CN114934290A (en) * | 2022-03-09 | 2022-08-23 | 氢克新能源技术(上海)有限公司 | Gas diffusion layer and processing technology thereof |
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2018
- 2018-08-17 CN CN201821332040.6U patent/CN208706769U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112425A (en) * | 2019-04-18 | 2019-08-09 | 上海交通大学 | The gas diffusion layers of one proton exchanging film fuel battery |
| CN112117465B (en) * | 2020-08-06 | 2022-06-21 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| CN112072119B (en) * | 2020-08-06 | 2022-06-21 | 江苏大学 | Fuel cell gas diffusion layer structure and processing method thereof |
| CN112072119A (en) * | 2020-08-06 | 2020-12-11 | 江苏大学 | Fuel cell gas diffusion layer structure and processing method thereof |
| CN112117465A (en) * | 2020-08-06 | 2020-12-22 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| WO2022027944A1 (en) * | 2020-08-06 | 2022-02-10 | 江苏大学 | Fuel-cell gas diffusion layer structure and processing method therefor |
| CN112467152A (en) * | 2020-11-25 | 2021-03-09 | 上海电气集团股份有限公司 | Gas diffusion layer, fuel cell, processing die and processing technology |
| CN113178591B (en) * | 2021-03-31 | 2022-06-21 | 江苏大学 | Gas diffusion layer for proton exchange membrane fuel cell and processing technology thereof |
| CN113178591A (en) * | 2021-03-31 | 2021-07-27 | 江苏大学 | Gas diffusion layer for proton exchange membrane fuel cell and processing technology thereof |
| CN113178590A (en) * | 2021-03-31 | 2021-07-27 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| CN113178590B (en) * | 2021-03-31 | 2022-06-21 | 江苏大学 | Fuel cell gas diffusion layer and processing method |
| CN114934290A (en) * | 2022-03-09 | 2022-08-23 | 氢克新能源技术(上海)有限公司 | Gas diffusion layer and processing technology thereof |
| CN114934290B (en) * | 2022-03-09 | 2024-01-30 | 氢克新能源技术(上海)有限公司 | Gas diffusion layer and processing technology thereof |
| CN114864960A (en) * | 2022-05-30 | 2022-08-05 | 江苏大学 | Metal gas diffusion layer and manufacturing method and application thereof |
| CN114864960B (en) * | 2022-05-30 | 2023-09-29 | 江苏大学 | Metal gas diffusion layer and manufacturing method and application thereof |
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