CN218414646U - Membrane electrode assembly and membrane electrode - Google Patents
Membrane electrode assembly and membrane electrode Download PDFInfo
- Publication number
- CN218414646U CN218414646U CN202222354958.3U CN202222354958U CN218414646U CN 218414646 U CN218414646 U CN 218414646U CN 202222354958 U CN202222354958 U CN 202222354958U CN 218414646 U CN218414646 U CN 218414646U
- Authority
- CN
- China
- Prior art keywords
- membrane electrode
- layer
- electrode assembly
- proton exchange
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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 fuel cell technical field especially relates to membrane electrode assembly and membrane electrode. The utility model provides a membrane electrode assembly, include: a proton exchange membrane; and an anode catalyst layer and a cathode catalyst layer respectively arranged on two sides of the proton exchange membrane; and an anti-oxidation layer is arranged between the proton exchange membrane and the anode catalysis layer. The utility model discloses a contain the antioxidation layer among the membrane electrode assembly, can effectively reduce to open and stop the oxygen content in the in-process anode catalysis layer, cut off and open the electric circuit that stops process anode hydrogen empty interface "reverse current mechanism" and produce to effectively restrain the oxidation of negative pole carbon material, and then make the membrane electrode have "anti protect function who opens and stop", show to reduce to open and stop the damage of process to fuel cell membrane electrode, prevent that the battery performance is degenerated.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to membrane electrode assembly and membrane electrode.
Background
The hydrogen fuel cell is a device capable of directly converting chemical energy in hydrogen into electric energy, and has the characteristics of high energy conversion efficiency, no pollution and the like. The membrane electrode is the "heart" of the hydrogen fuel cell and the electrochemical reaction takes place in the membrane electrode. The membrane electrode is generally composed of an anode catalyst layer, a cathode catalyst layer, a proton exchange membrane, an anode gas diffusion layer, and a cathode gas diffusion layer. The anode catalyst layer is subjected to a Hydrogen Oxidation Reaction (HOR) and is generally composed of a Pt/C catalyst and a proton conductive resin. The cathode catalyst layer undergoes an Oxygen Reduction Reaction (ORR), and is also generally composed of a Pt/C catalyst and a proton conductive resin. Proton exchange membranes are typically composed of perfluorosulfonic resins, which function primarily to conduct protons, and to sequester electrons and gases. The cathode and anode gas diffusion layers are generally composed of carbon paper or carbon cloth and a microporous layer on one side, and are used for transporting air and hydrogen to the cathode and anode catalyst layers and discharging excess water, respectively.
During the start-up and shut-down of the fuel cell, a certain amount of air is easily mixed into the anode catalyst layer, so that a hydrogen-air interface is formed, as shown in fig. 1. The air area of the anode catalytic layer can generate oxygen reduction reaction under the catalytic action of the Pt/C catalyst, so that the potential of the local position of the cathode catalytic layer is raised. The above-mentioned local (IV) potential of the cathode catalyst layer may even reach 2.0V, forcing the water in this region to undergo Oxygen Evolution Reaction (OER) and the carbon support to undergo Carbon Oxidation Reaction (COR). The carbon carrier serves as a catalyst, a carrier and a framework of the catalyst layer, and oxidation of the carbon carrier can cause a large amount of Pt to be lost, even cause the framework of the catalyst layer to collapse, and seriously damage the performance of the battery.
In the prior art, cn201180061661.X discloses an improved membrane electrode assembly for PEM fuel cells, having two electrode layers (EL 1 and/or EL 2), at least one of which comprises a first electrocatalyst (EC 1) comprising an iridium oxide component in combination with at least one other inorganic oxide component; and a second electrocatalyst (EC 2/EC 2') which is free of iridium. Preferably, an iridium oxide/titania catalyst is used as EC1. These membrane electrodes exhibit excellent performance, especially under severe operating conditions such as fuel starvation and start/stop cycling. However, the iridium oxide accelerates the water electrolysis reaction to inhibit the corrosion of the cathode carbon material and prevent the performance degradation of the battery, so that the degradation mechanism in the starting and stopping process cannot be fundamentally eliminated, and the protection effect is limited.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a membrane electrode subassembly includes: a proton exchange membrane;
and an anode catalyst layer and a cathode catalyst layer respectively arranged on both sides of the proton exchange membrane;
and an anti-oxidation layer is arranged between the proton exchange membrane and the anode catalysis layer.
As a preferred embodiment of the present invention, the membrane electrode assembly further comprises: and an anti-oxidation layer is arranged on one side of the anode catalyst layer, which is far away from the proton exchange membrane.
When two oxidation resistant layers are present, the antioxidants may be the same or different.
As a preferred embodiment of the present invention, the thickness ratio of the oxidation resistant layer to the anode catalytic layer is less than 1.
As a preferred embodiment of the present invention, the antioxidant in the antioxidation layer is at least one of polyphenols, butyl hydroxy anisole, dibutyl hydroxy toluene, tert-butyl p-diphenol, and vitamin C.
As a preferred embodiment of the present invention, the antioxidant accounts for 10% to 70% by weight of the antioxidation layer.
As a preferred embodiment of the present invention, the antioxidation layer contains perfluorosulfonic acid resin.
As a preferred embodiment of the present invention, the weight percentage of the perfluorosulfonic acid resin in the antioxidation layer is 30% to 90%.
As a preferable embodiment of the present invention, the anode catalyst in the anode catalyst layer is a catalyst capable of catalyzing hydrogen oxidation reaction, preferably at least one of Pt/C, ptRu/C, ptIr/C, ptCo/C, ptCoMn/C, ptNi/C, ir/C, ru/C, and IrRu/C.
As a preferred embodiment of the present invention, the cathode catalyst in the cathode catalyst layer is Pt/C.
As a preferred embodiment of the present invention, the anode catalytic layer further comprises: a perfluorosulfonic acid resin;
preferably, the perfluorinated sulfonic acid resin accounts for 8-40 wt% of the anode catalyst layer.
As a preferred embodiment of the present invention, the proton exchange membrane contains perfluorosulfonic acid resin.
Further, the utility model provides a membrane electrode, it includes:
the membrane electrode assembly of any of the above embodiments; and gas diffusion layers disposed at both sides of the membrane electrode assembly.
As a preferred embodiment of the present invention, the gas diffusion layer is carbon fiber paper or carbon fiber cloth coated with carbon powder on the surface.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a contain the antioxidation layer among the membrane electrode assembly, can effectively reduce to open and stop the oxygen content (pipeline infiltration, negative pole catalysis infiltration etc.) in the in-process anode catalysis layer, cut off and stop the electric circuit that "reverse current mechanism" produced of process anode hydrogen empty interface to effectively restrain the oxidation of negative pole carbon material, and then make the membrane electrode have "anti the protect function who opens and stop", show to reduce to open the damage of stopping the process to fuel cell membrane electrode, prevent that the battery performance from declining.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a "reverse current mechanism" of a membrane electrode of the prior art.
Fig. 2 is a schematic diagram of the design principle of the membrane electrode assembly with "start stop" protection function according to the present invention.
Fig. 3 is a schematic structural diagram of a membrane electrode assembly provided by the present invention.
Fig. 4 is a schematic structural diagram of a membrane electrode assembly provided by the present invention.
Fig. 5 is a schematic structural diagram of a membrane electrode provided by the present invention.
Fig. 6 is a schematic structural diagram of a membrane electrode provided by the present invention.
In FIGS. 3 to 6, 1 represents a proton exchange membrane; 2 represents a cathode catalyst layer; 3 represents an anode catalyst layer; 4 and 5 represent an oxidation resistant layer; 6 denotes a cathode gas diffusion layer; and 7 denotes an anode gas diffusion layer.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As an embodiment of the present invention, this embodiment provides a membrane electrode assembly, including: a proton exchange membrane; and an anode catalyst layer and a cathode catalyst layer respectively arranged on both sides of the proton exchange membrane; and an anti-oxidation layer is arranged between the proton exchange membrane and the anode catalyst layer. A schematic view of the membrane electrode assembly of this embodiment is shown in fig. 3.
The utility model discloses a mechanism research has found that can take place on the membrane electrode that adopts among the prior art "reverse current mechanism" as shown in fig. 1, specifically, the negative pole catalysis layer can form higher local high potential (> 2.0V), accelerates the oxidation reaction of carbon carrier, leads to negative pole catalysis layer Pt to run off and collapse.
And the utility model discloses a membrane electrode subassembly, wherein, be provided with the antioxidation layer between proton exchange membrane and positive pole catalysis layer, can effectively reduce to open and stop the oxygen content (pipeline infiltration, negative pole catalysis infiltration etc.) in the in-process positive pole catalysis layer, cut off and open the electric circuit that "reverse current mechanism" produced of process positive pole hydrogen empty interface, thereby effectively restrain the oxidation of negative pole carbon material, and then make the membrane electrode have "anti protect function who opens and stop", show to reduce to open the damage of stopping the process to fuel cell membrane electrode, prevent that the battery performance is degenerated. The schematic diagram of the design principle of the membrane electrode assembly with the 'start/stop' protection function is shown in fig. 2.
As an embodiment of the present invention, the membrane electrode assembly further includes: and an anti-oxidation layer is arranged on one side of the anode catalyst layer, which is far away from the proton exchange membrane. A schematic view of the membrane electrode assembly of this embodiment is shown in fig. 4.
As an embodiment of the present invention, the antioxidant in the oxidation resistant layer is at least one of polyphenols, butyl hydroxy anisole, dibutyl hydroxy toluene, tert-butyl p-diphenol, and vitamin C.
As an embodiment of the present invention, the antioxidant accounts for 30% to 50% by weight of the antioxidation layer.
As an embodiment of the present invention, the antioxidation layer contains perfluorosulfonic acid resin.
As an embodiment of the present invention, the weight percentage of the perfluorosulfonic acid resin in the antioxidation layer is 50% to 70%.
As an embodiment of the present invention, the anode catalyst in the anode catalyst layer is a catalyst capable of catalyzing hydrogen oxidation reaction, and is preferably at least one of Pt/C, ptRu/C, ptIr/C, ptCo/C, ptCoMn/C, ptNi/C, ir/C, ru/C, and IrRu/C.
The utility model discloses the discovery, when using non-Pt catalyst catalysis oxyhydrogen reaction, non-Pt catalyst can play a role with the oxidation resisting layer jointly, further reduces to open the damage of opening the process to fuel cell membrane electrode.
As an embodiment of the present invention, the anode catalytic layer further includes: a perfluorosulfonic acid resin;
preferably, the perfluorinated sulfonic acid resin accounts for 8-40 wt% of the anode catalyst layer.
As an embodiment of the present invention, the proton exchange membrane contains perfluorosulfonic acid resin.
As an embodiment of the present invention, the cathode catalyst in the cathode catalyst layer is Pt/C.
As an embodiment of the utility model, this embodiment provides a membrane electrode, and its structure is: the membrane electrode assembly of any of the embodiments described above; and gas diffusion layers disposed at both sides of the membrane electrode assembly.
As an embodiment of the present invention, the gas diffusion layer is carbon fiber paper or carbon fiber cloth coated with carbon powder on the surface.
The structure schematic diagram of the membrane electrode is shown in figure 5 or figure 6.
Because the utility model discloses an contain above-mentioned membrane electrode subassembly that has "anti opening and stop" function in the membrane electrode, consequently, the membrane electrode in above-mentioned embodiment also possesses "anti opening and stops" function, can show to reduce to open the damage of opening the process to fuel cell membrane electrode, prolongs the life of membrane electrode.
The technical solution and the advantages of the present invention will be explained with reference to the following specific embodiments.
The following examples, where specific techniques or conditions are not indicated, are all performed in the conventional manner or according to techniques or conditions described in literature in the art or according to the product specifications. The reagents and instruments used are conventional products which are not indicated by manufacturers and are available from normal distributors.
Example 1
The present embodiment provides a membrane electrode assembly, which is prepared as follows:
(1) Dispersing 1g of catalyst Pt/C (50 wt.% Pt) and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of solvent, wherein the solvent is a solution formed by mixing water and n-propanol according to a weight ratio of 1;
dispersing 0.5g of antioxidant tert-butyl-p-diphenol and 20g of perfluorinated sulfonic acid resin solution (5 wt.%) in 10g of the solvent, ultrasonically dispersing for 5min, and stirring at 8000rpm to obtain an antioxidation layer slurry;
dispersing 1g of catalyst Pt/C and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of the solvent, ultrasonically dispersing for 5min, and stirring at a rotation speed of 8000rpm to prepare cathode catalyst layer slurry;
(2) Spraying the slurry of the antioxidation layer on one side of the proton exchange membrane, and spraying the slurry of the anode catalysis layer after drying; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly was placed between 2 gas diffusion layers to prepare a membrane electrode, wherein the gas diffusion layers were carbon fiber cloth.
Example 2
The present embodiment provides a membrane electrode assembly, which is prepared as follows:
(1) Dispersing 1g of catalyst Pt/C (50 wt.% Pt) and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of solvent, wherein the solvent is a solution formed by mixing water and n-propanol according to a weight ratio of 1;
dispersing 0.5g of antioxidant butyl hydroxy anisol and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 10g of the solvent, ultrasonically dispersing for 5min, and stirring at 8000rpm to obtain an antioxidation layer slurry;
dispersing 1g of catalyst Pt/C and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of the solvent, ultrasonically dispersing for 5min, and stirring at a rotating speed of 8000rpm to prepare cathode catalyst layer slurry;
(2) Spraying the slurry of the antioxidation layer on one side of the proton exchange membrane, and spraying the slurry of the anode catalysis layer after drying; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly was placed between 2 gas diffusion layers to prepare a membrane electrode, wherein the gas diffusion layers were carbon fiber cloth.
Example 3
The present embodiment provides a membrane electrode assembly, which is prepared as follows:
(1) Dispersing 1g of catalyst Pt/C (50 wt.% Pt) and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of solvent, wherein the solvent is a solution formed by mixing water and n-propanol according to a weight ratio of 1;
dispersing 1g of antioxidant butyl hydroxy anisole and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 10g of the solvent, ultrasonically dispersing for 5min, and stirring at 8000rpm to obtain an anti-oxidation layer slurry;
dispersing 1g of catalyst Pt/C and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of the solvent, ultrasonically dispersing for 5min, and stirring at a rotating speed of 8000rpm to prepare cathode catalyst layer slurry;
(2) Spraying the slurry of the antioxidation layer on one side of the proton exchange membrane, and spraying the slurry of the anode catalysis layer after drying; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly was placed between 2 gas diffusion layers to produce a membrane electrode, wherein the gas diffusion layers were carbon fiber cloth.
Example 4
This example provides a membrane electrode assembly prepared as follows:
(1) Dispersing 1g of catalyst Ru/C (50 wt.% Pt) and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of solvent, wherein the solvent is a solution formed by mixing water and n-propanol according to a weight ratio of 1;
dispersing 0.5g of antioxidant tert-butyl p-diphenol and 20g of perfluorinated sulfonic acid resin solution (5 wt.%) in 10g of the solvent, ultrasonically dispersing for 5min, and stirring at 8000rpm to obtain an antioxidation layer slurry;
dispersing 1g of catalyst Pt/C and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of the solvent, ultrasonically dispersing for 5min, and stirring at a rotating speed of 8000rpm to prepare cathode catalyst layer slurry;
(2) Spraying the slurry of the antioxidation layer on one side of the proton exchange membrane, and spraying the slurry of the anode catalysis layer after drying; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly is placed between 2 gas diffusion layers to prepare the membrane electrode, wherein the gas diffusion layers are carbon fiber paper coated with carbon powder on the surfaces.
Example 5
This example provides a membrane electrode assembly prepared as follows:
(1) Dispersing 1g of catalyst Ir/C (50 wt.% Ir) and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of solvent, wherein the solvent is a solution formed by mixing water and n-propanol according to a weight ratio of 1;
dispersing 0.5g of antioxidant tert-butyl p-diphenol and 20g of perfluorinated sulfonic acid resin solution (5 wt.%) in 10g of the solvent, ultrasonically dispersing for 5min, and stirring at 8000rpm to obtain an antioxidation layer slurry;
dispersing 1g of catalyst Pt/C and 20g of perfluorosulfonic acid resin solution (5 wt.%) in 20g of the solvent, ultrasonically dispersing for 5min, and stirring at a rotating speed of 8000rpm to prepare cathode catalyst layer slurry;
(2) Spraying the antioxidation layer slurry on one side of the proton exchange membrane, drying and spraying the anode catalysis layer slurry; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly is placed between 2 gas diffusion layers to prepare the membrane electrode, wherein the gas diffusion layers are carbon fiber paper coated with carbon powder on the surfaces.
Example 6
This example provides a membrane electrode assembly prepared by a method different from that of example 1 only:
spraying the anti-oxidation layer slurry on one side of the proton exchange membrane, drying, spraying the anode catalyst layer slurry, drying, and spraying a layer of the anti-oxidation layer slurry; and spraying the cathode catalyst layer slurry on the other side of the proton exchange membrane.
Further, the membrane electrode assembly was placed between 2 gas diffusion layers to prepare a membrane electrode, wherein the gas diffusion layers were carbon fiber cloth.
Comparative example
This comparative example provides a membrane electrode assembly, which was prepared by a method different from that of example 1 only: the antioxidation layer is not provided.
Further, the membrane electrode assembly was placed between 2 gas diffusion layers to produce a membrane electrode, wherein the gas diffusion layers were carbon fiber cloth.
Test examples
The membrane electrodes prepared in the examples and comparative examples were tested for start-stop resistance. Specifically, the method comprises the following steps:
the test method is as follows:
the active area is 25cm 2 The membrane electrode prepared in examples and comparative examples was fully activated after the cell was assembled. The activation conditions are as follows: at 80 ℃, the hydrogen excess coefficient of the anode is 1.5, the air excess coefficient of the cathode is 2.0, and the current density is lower than 400mA/cm 2 When the ratio is 400mA/cm 2 Current density flow feed, 100%/100% relative humidity, 100kPa/100kPa backpressure. After activation, the polarization curve of the single cell is tested, and the polarization curve is identical to the activation condition.
After the experiment is completed, starting and stopping an accelerated experiment, wherein the accelerated experiment refers to a DOE test method, and the experimental conditions are as follows: 35 ℃ and normal pressure. The whole acceleration experiment is 5000 cycles, the steps in each cycle are shown in table 1, and the air flow in the whole experiment process is a fixed value (the excess factor is 2.0, 1.0A)/cm 2 The corresponding flow value at current density). And after the start-stop acceleration experiment is finished, testing the polarization curve of the monocell.
TABLE 1 Start-stop test method
The test results are shown in table 2.
TABLE 2 comparison of Start-stop resistance of examples and comparative examples
As can be seen from Table 2, the membrane electrode of the present invention can effectively inhibit the oxidation of the cathode carbon material, and has a protection function of "anti start stop".
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. A membrane electrode assembly, comprising: a proton exchange membrane;
and an anode catalyst layer and a cathode catalyst layer respectively arranged on two sides of the proton exchange membrane;
and an anti-oxidation layer is arranged between the proton exchange membrane and the anode catalyst layer.
2. The membrane electrode assembly of claim 1, further comprising: and an anti-oxidation layer is arranged on one side of the anode catalyst layer, which is far away from the proton exchange membrane.
3. A membrane electrode assembly according to claim 1 or 2, wherein the thickness ratio of the oxidation resistant layer to the anode catalytic layer is less than 1.
4. A membrane electrode, comprising:
a membrane electrode assembly according to any one of claims 1 to 3;
and gas diffusion layers disposed at both sides of the membrane electrode assembly.
5. The membrane electrode according to claim 4, wherein the gas diffusion layer is carbon fiber paper or carbon fiber cloth coated with carbon powder on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222354958.3U CN218414646U (en) | 2022-09-05 | 2022-09-05 | Membrane electrode assembly and membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222354958.3U CN218414646U (en) | 2022-09-05 | 2022-09-05 | Membrane electrode assembly and membrane electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218414646U true CN218414646U (en) | 2023-01-31 |
Family
ID=85030841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222354958.3U Active CN218414646U (en) | 2022-09-05 | 2022-09-05 | Membrane electrode assembly and membrane electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218414646U (en) |
-
2022
- 2022-09-05 CN CN202222354958.3U patent/CN218414646U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020101412A4 (en) | Direct methanol fuel cell membrane electrode for improving catalyst utilization and preparation method thereof | |
| CN111900420A (en) | Anode catalyst slurry, anode catalyst layer, membrane electrode and fuel cell | |
| US7785728B2 (en) | Palladium-based electrocatalysts and fuel cells employing such electrocatalysts | |
| KR102225982B1 (en) | Catalyst | |
| US20220216484A1 (en) | Cathode catalyst layer structure for enhancing durability of catalyst and fabrication method thereof | |
| CA2699727C (en) | Fuel cell system | |
| CA2528141C (en) | Membrane-electrode unit for direct methanol fuel cells and method for the production thereof | |
| JP5510181B2 (en) | Electrocatalyst layer production method and polymer electrolyte fuel cell | |
| JP2009026501A (en) | Electrolyte membrane-electrode assembly | |
| CN111244478A (en) | Method for preparing crack-free catalyst coating film, catalyst coating film and membrane electrode | |
| US20090042091A1 (en) | Supported catalyst layers for direct oxidation fuel cells | |
| CN111313031B (en) | Composite catalyst particles, and preparation method and application thereof | |
| CN115312821A (en) | Membrane electrode, membrane electrode assembly and preparation method thereof | |
| CN218414646U (en) | Membrane electrode assembly and membrane electrode | |
| KR101101497B1 (en) | Producing method for electrodes of fuel cell with high temperature type and membrane electrode assembly produced thereby | |
| JP3844022B2 (en) | Direct methanol fuel cell with solid polymer electrolyte | |
| CN115441023A (en) | Membrane electrode for fuel cell and preparation method thereof | |
| CN114210532A (en) | CCM continuous coating process for membrane electrode of fuel cell | |
| JP3774898B2 (en) | Direct methanol fuel cell with solid polymer electrolyte | |
| CN115312819A (en) | Start-stop-resistant membrane electrode assembly and preparation method thereof | |
| CN116190695A (en) | Membrane electrode assembly and membrane electrode | |
| US20120189933A1 (en) | Anode catalyst layers for direct oxidation fuel cells | |
| EP4060776A1 (en) | Electrode assembly for proton exchange membrane-free fuel cell and preparation method therefor, and fuel cell | |
| CN116230962A (en) | Fuel cell catalytic layer with excellent chemical stability and long anti-counter electrode time and preparation process thereof | |
| CN117747853A (en) | Preparation method of fuel cell membrane electrode composite catalytic layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cai Chao Inventor after: Ai Yongcheng Inventor before: Cai Chao Inventor before: Ai Yongcheng Inventor before: Chen Feng |
|
| CB03 | Change of inventor or designer information |