KR20230084632A - A membrane for membrane-electrode assembly with low gas permeability and membrane-electrode assembly comprising the same - Google Patents

Abstract

The present invention relates to an electrolyte membrane for a membrane-electrode assembly with low gas permeability and a membrane-electrode assembly including the same. The electrolyte membrane for a membrane-electrode assembly includes: an ion transport layer including an ionomer; and a catalyst dispersed in the ion transport layer. The present invention maintains high durability even during long-term operation.

Description

Electrolyte membrane for low gas permeable membrane-electrode assembly and membrane-electrode assembly comprising the same

The present invention relates to a low gas permeable electrolyte membrane for a membrane-electrode assembly and a membrane-electrode assembly including the same.

In a polymer electrolyte membrane fuel cell (PEMFC), the electrolyte membrane conducts hydrogen ions. To deliver hydrogen ions, an ionomer with hydrogen ion conductivity is used. The ionomer absorbs water and selectively transfers hydrogen ions generated at the anode to the cathode.

The durability of the electrolyte membrane is reduced due to deterioration caused by gas permeation. Specifically, when gas permeates, hydrogen and oxygen meet to generate hydrogen peroxide, and hydrogen peroxide is decomposed into radicals to break the bond of the electrolyte membrane.

In order to improve the above phenomenon, efforts have been made to prevent generation of radicals by adding a small amount of catalyst. Korean Patent Registration No. 10-1669236, US Patent Registration No. 8652705, 5342494, 5472799, 5800938 and the like disclose various methods of adding a catalyst.

US Patent No. 8652705 relates to a technique of adding carbon particles containing platinum to an electrolyte membrane. However, since the carbon particles are in the form of simple particles, they move easily within the electrolyte membrane and are lost during operation of the fuel cell, so the degree of improvement in durability during long-term operation is lower than expected. In addition, since platinum is a catalyst that easily causes an electrochemical reaction, it may be oxidized in contact with air during the electrolyte membrane manufacturing process. This may cause a fire.

Korean Patent Registration No. 10-1669236 US Patent No. 8,652,705 US Patent No. 5,342,494 US Patent No. 5,472,799 US Patent No. 5,800,938

An object of the present invention is to provide an electrolyte membrane for a membrane-electrode assembly having low gas permeability.

An object of the present invention is to provide an electrolyte membrane for a membrane-electrode assembly that maintains high durability even during long-term operation by minimizing the mobility of a catalyst added to the electrolyte membrane.

An object of the present invention is to provide an electrolyte membrane for a membrane-electrode assembly in which the catalyst is not oxidized during the manufacturing process.

The object of the present invention is not limited to the object mentioned above. The objects of the present invention will become more apparent from the following description, and will be realized by means and combinations thereof set forth in the claims.

An electrolyte membrane for a membrane-electrode assembly according to an embodiment of the present invention includes an ion transport layer including an ionomer; and a catalyst dispersed in the ion transport layer, wherein the catalyst includes a support comprising a polymer having a proton conductive functional group and having a fibrous shape, and a composite comprising an active metal supported on the support; And it may include a coating layer coated on the surface of the composite.

The hydrogen ion conductive functional group may include at least one selected from the group consisting of a sulfonic acid group, a carboxyl group, a phosphate group, a quaternary ammonium group, and combinations thereof.

The polymer is perfluoro sulfonic acid (PFSA), sulfonated-poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO), sulfonated polyethersulfone (SPES), sulfonated poly(ether ether ketone) (SPEEK) and their It may include at least one selected from the group consisting of combinations.

The support may have a diameter of 1 μm or less.

The support may have a length of 0.1 μm to 1 μm.

The catalyst may form a network structure entangled with each other in the ion transport layer.

The active metal is platinum; alloys of platinum and transition metals; And at least one selected from the group consisting of combinations thereof, wherein the transition metal is at least one selected from the group consisting of Fe, Co, Ni, Cr, Mn, Mo, Cu, V, Y, and combinations thereof. can include

The coating layer may include at least one selected from the group consisting of polyaniline, polypyrrole, and combinations thereof.

The coating layer may have a thickness of 1 nm to 100 nm.

The electrolyte membrane may include 0.5 parts by weight to 50 parts by weight of the catalyst based on 100 parts by weight of the ion transport layer.

The electrolyte membrane may further include a porous reinforcement layer impregnated with an ionomer, and the ion transport layer may be positioned on at least one surface of the reinforcement layer.

The reinforcement layer is polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (e-PTFE), polyethylene (PE), polypropylene (PP), polyphenylene oxide (PPO), polybenzimidazole (PBI) ), polyimide (PI), polyvinylidene fluoride (PVdF), polyvinyl chloride (PVC), and at least one selected from the group consisting of combinations thereof.

A membrane-electrode assembly according to an embodiment of the present invention includes the electrolyte membrane; a cathode located on one side of the electrolyte membrane; And it may include an anode located on the other surface of the electrolyte membrane.

The electrolyte membrane may include a porous reinforcement layer; a first ion transport layer located on one surface of the reinforcement layer and in contact with the cathode; and a second ion transport layer located on the other surface of the reinforcement layer and in contact with the anode, and the catalyst may be included in the first ion transport layer.

A method of manufacturing an electrolyte membrane for a membrane-electrode assembly according to an embodiment of the present invention includes forming a fibrous support by electrospinning a polymer having a hydrogen ion conductive functional group; Forming a complex by supporting an active metal on the support; preparing a catalyst by forming a coating layer covering the composite; and forming an electrolyte membrane by coating a solution containing the catalyst and the ionomer on a substrate.

The manufacturing method may be to deposit and support an active metal on the support.

The manufacturing method may include injecting a precursor of the coating layer, a surfactant, and an initiator into an aqueous solvent; stirring the resultant to polymerize the precursor; And immersing the composite in the resulting product; it may be to form a coating layer covering the composite through.

The molar ratio of the precursor to the surfactant may be 1:10 to 10:1.

The molar ratio of the precursor to the initiator may be 1:0.1 to 1:0.3.

The polymerization may be carried out in 12 hours or less.

The solution may include 0.5 parts by weight to 50 parts by weight of the catalyst based on 100 parts by weight of the ionomer.

According to the present invention, an electrolyte membrane for a membrane-electrode assembly having low gas permeability can be obtained.

According to the present invention, an electrolyte membrane for a membrane-electrode assembly maintaining high durability even during long-term operation can be obtained because the catalysts can form a net structure with each other and be physically fixed in the electrolyte membrane.

According to the present invention, since the catalyst is not oxidized during the manufacturing process, an electrolyte membrane for a membrane-electrode assembly having excellent process stability can be obtained.

The effects of the present invention are not limited to the effects mentioned above. It should be understood that the effects of the present invention include all effects that can be inferred from the following description.

1 is a cross-sectional view showing a membrane-electrode assembly according to the present invention.
2 is a cross-sectional view showing an electrolyte membrane according to the present invention.
Figure 3 schematically shows a catalyst according to the present invention.
4 shows another embodiment of the membrane-electrode assembly according to the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. In addition, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where it is "directly on" the other part, but also the case where another part is present in the middle. Conversely, when a part such as a layer, film, region, plate, etc. is said to be "under" another part, this includes not only the case where it is "directly below" the other part, but also the case where another part is in the middle.

Unless otherwise specified, all numbers, values and/or expressions expressing quantities of components, reaction conditions, polymer compositions and formulations used herein refer to the number of factors that such numbers arise, among other things, to obtain such values. Since these are approximations that reflect the various uncertainties of the measurement, they should be understood to be qualified by the term "about" in all cases. Also, when numerical ranges are disclosed herein, such ranges are contiguous and include all values from the minimum value of such range to the maximum value inclusive, unless otherwise indicated. Furthermore, where such ranges refer to integers, all integers from the minimum value to the maximum value inclusive are included unless otherwise indicated.

1 is a cross-sectional view showing a membrane-electrode assembly according to the present invention. Referring to this, the membrane-electrode assembly may include an electrolyte membrane 10, a cathode 20 positioned on one surface of the electrolyte membrane, and an anode 30 positioned on the other surface of the electrolyte membrane 10.

2 is a cross-sectional view showing an electrolyte membrane 10 according to the present invention. The electrolyte membrane 10 may include an ion transport layer 100 and a catalyst 200 dispersed in the ion transport layer 100 .

The ion transport layer 100 includes an ionomer having hydrogen ion conductivity and is responsible for the movement of hydrogen ions between the cathode 20 and the anode 30 .

The ionomer may include perfluoro sulfonic acid (PFSA), for example, Nafion.

3 schematically illustrates a catalyst 200 according to the present invention. Referring to this, the catalyst 200 is a composite 210 including a support 211 and an active metal 212 supported on the support 211 and a coating layer 220 coated on the surface of the composite 21 can include

The support 211 may include a polymer having a hydrogen ion conductive functional group and may have a fibrous shape. Since the catalyst 200 also has a fibrous shape according to the shape of the support 211 , the catalyst 200 may form a network structure entangled with each other in the ion transport layer 100 as shown in FIG. 2 . Depending on the amount of the catalyst 200 included in the ion transport layer 100 , the network structure may be entirely or locally formed within the ion transport layer 100 . Since the catalyst 200 forms a network structure, it is physically fixed in the ion transport layer 100, and thus loss of the catalyst 200 can be prevented. Therefore, the effect of improving durability by the addition of the catalyst 200 can be maintained for a long period of time.

The support 211 may be made of a polymer including at least one proton conductive functional group selected from the group consisting of a sulfonic acid group, a carboxyl group, a phosphate group, a quaternary ammonium group, and combinations thereof.

Specifically, the support 211 is perfluoro sulfonic acid (PFSA), sulfonated-poly (2,6-dimethyl-1,4-phenylene oxide) (SPPO), sulfonated polyethersulfone (SPES), sulfonated poly (ether ether ketone) ( SPEEK) and at least one selected from the group consisting of combinations thereof.

By configuring the support 211 with a polymer having hydrogen ion conductivity, it is possible to mitigate the decrease in hydrogen ion conductivity of the electrolyte membrane 10 due to the addition of the catalyst 200 .

The support 211 may have a diameter of 1 μm or less. The lower limit of the diameter is not particularly limited, but may be 0.1 μm or more. The diameter is based on the cross section of the support 211, and is the longest of the diameter of a circle when the cross section of the support 211 is circular and the distance from one point to another point on the cross section when the cross section of the support 211 is polygonal. length can mean. The support 211 may have a length of 0.1 μm to 1 μm. When the diameter and length of the support 211 fall within the above ranges, it is possible to effectively prevent gas from permeating through the electrolyte membrane 10 without interfering with the movement of hydrogen ions in the electrolyte membrane 10. .

The active metal 212 is platinum; alloys of platinum and transition metals; And it may include at least one selected from the group consisting of combinations thereof.

The transition metal may include at least one selected from the group consisting of Fe, Co, Ni, Cr, Mn, Mo, Cu, V, Y, and combinations thereof.

The coating layer 220 covers all or part of the surface of the composite 210 to prevent the composite 210 from being oxidized in contact with air. Since the active metal includes platinum, it can be easily oxidized and burned when exposed to air. The present invention is characterized in that the surface of the composite 210 is covered with the coating layer 220 to suppress the occurrence of the above problems.

By making the coating layer 220 of a polymer having hydrogen ion conductivity, it is possible to prevent the hydrogen ion conductivity of the electrolyte membrane 10 from deteriorating.

Meanwhile, the coating layer 220 may be formed by immersing the composite 210 in a solution containing the coating layer 220 . At this time, if the solution contains an organic solvent such as alcohol, the active metal 212 may rapidly react with the alcohol and be oxidized. Therefore, as a material constituting the coating layer 220, a material that can be polymerized in an aqueous solvent while having hydrogen ion conductivity should be used.

Specifically, the coating layer 220 may include at least one selected from the group consisting of polyaniline, polypyrrole, and combinations thereof.

The coating layer 220 may have a thickness of 1 nm to 100 nm. If the thickness is less than 1 nm, the function of protecting the composite 210 may deteriorate, and if the thickness exceeds 100 nm, low gas permeability of the electrolyte membrane 10 may be impaired.

The electrolyte membrane 10 may include 0.5 parts by weight to 50 parts by weight of the catalyst 200 based on 100 parts by weight of the ion transport layer 100 . If the content of the catalyst 200 is less than 0.5 parts by weight, it is difficult to suppress the permeation of gas through the electrolyte membrane 10, and if it exceeds 100 parts by weight, the hydrogen ion conductivity of the electrolyte membrane 10 may be lowered. .

4 shows another embodiment of the membrane-electrode assembly according to the present invention. Referring to this, the membrane-electrode assembly includes an electrolyte membrane 10, a cathode 20 located on one side of the electrolyte membrane 10, and an anode 30 located on the other side of the electrolyte membrane 10, , The electrolyte membrane 10 is a porous reinforcement layer 300, a first ion transport layer 100 'located on one side of the reinforcement layer 300 and in contact with the cathode 20, and the reinforcement layer 300 It may include a second ion transport layer 100 ″ located on the other surface and in contact with the anode 30 .

In the electrolyte membrane 10, a catalyst (not shown in FIG. 4) may be included in at least one of the first ion transport layer 100' and the second ion transport layer 100''. However, it may be preferable that a catalyst be added to the first ion transport layer 100' in contact with the cathode 20. The reason for this is as follows. Air flows through the cathode 20 and hydrogen flows through the anode 30 . Since hydrogen moves much faster than air, it is highly likely that hydrogen and oxygen will meet in the first ion transport layer 100' on the cathode 20 side within the electrolyte membrane 10, considering the gas permeability.

The method for manufacturing an electrolyte membrane for a membrane-electrode assembly according to the present invention comprises the steps of electrospinning a polymer having a hydrogen ion conductive functional group to form a fibrous support, supporting an active metal on the support to form a composite, It may include preparing a catalyst by forming a coating layer covering the composite, and forming an electrolyte membrane by applying a solution containing the catalyst and the ionomer on a substrate.

First, a fibrous support may be prepared by electrospinning a solution containing a polymer having a hydrogen ion conductive functional group. Conditions for the electrospinning are not particularly limited, and the support may be prepared through devices, conditions, and methods commonly used in the art to which the present invention belongs.

The composite may be formed by depositing and supporting an active metal on the support. The deposition method and conditions are not particularly limited, and the active metal may be deposited through, for example, vacuum deposition.

The coating layer may be formed through the steps of introducing a precursor of the coating layer, a surfactant, and an initiator into an aqueous solvent, polymerizing the precursor by stirring the resulting product, and immersing the composite in the resulting product.

As described above, the active metal of the composite may be oxidized when it comes into contact with an organic solvent such as alcohol. Therefore, as a material constituting the coating layer, polyaniline, polypyrrole, and the like that can be polymerized in an aqueous solvent may be used.

The precursor of the coating layer may include at least one selected from the group consisting of aniline, pyrrole, and combinations thereof.

The type of the surfactant is not particularly limited, but may include dodecylbenzenesulfonic acid (DBSA). The molar ratio of the precursor to the surfactant may be 1:10 to 10:1, or 1:1.

The type of the initiator is not particularly limited, but may include Ammonium peroxodisulfate (APS). A molar ratio between the precursor and the initiator may be 1:0.1 to 1:0.3.

After the precursor of the coating layer, the surfactant and the initiator are added to the aqueous solvent, the precursor may be polymerized by stirring. The polymerization may be carried out in 12 hours or less. The lower limit of the polymerization time is not particularly limited, but may be 1 hour or more, 2 hours or more, or 3 hours or more.

The degree of polymerization of the polymer obtained by polymerizing the precursor may be changed according to the concentration of the precursor and the surfactant, and the polymerization time of stirring after adding the initiator. Therefore, it may be desirable to carry out polymerization under conditions within the above numerical range. If the degree of polymerization is too high, an excessive amount of the coating layer may be applied on the composite, making it difficult for gas passing through the electrolyte membrane to contact the active metal. On the other hand, if the degree of polymerization is low, the coating layer may not be properly formed and dissociate from the composite.

After polymerizing the precursor, the composite may be immersed in the resultant to form a coating layer on the composite.

An electrolyte membrane may be formed by applying the solution containing the catalyst and the ionomer prepared as described above on a substrate.

On the other hand, as shown in FIG. 4, the electrolyte membrane including the reinforcement layer is formed by applying a solution containing an ionomer on a substrate to form a second ion transport layer 100'', and on the second ion transport layer 100''. After laminating the reinforcement layer 300 on the reinforcement layer 300, it can be manufactured by applying a solution containing the catalyst and the ionomer described above to form the first ion transport layer 100'.

Other forms of the present invention will be described in more detail through preparation examples below. The following preparation examples are merely examples to aid understanding of the present invention, and the scope of the present invention is not limited thereto.

manufacturing example

(manufacture of support)

The Nafion solution is dried to obtain Nafion powder. Prepare a solvent containing acetone and dimethylacetamide (DMAc) in a mass ratio of 5:5. A solution for electrospinning was prepared by adding the Nafion powder to the solvent in an amount of 25% by weight. Electrospinning was performed by applying a voltage of about 15 kV, and a mat including a fibrous support was obtained. The mat is vacuum dried at 100° C. for about 24 hours to remove residual solvent.

(supporting active metal)

Platinum is vacuum deposited on the mat including the support to prepare a composite. Vacuum deposition is performed for about 1 minute at a current of about 30 mA. The amount of platinum supported is determined by the current value and time applied during vacuum deposition. If applied for more than 1 minute, the amount of platinum supported increases, so the electrolyte membrane may lose electrical insulation performance and ion conductivity may decrease.

(coating layer formation)

100ml of distilled water, which is an aqueous solvent, is introduced into a reactor adjusted to about 60°C. Insert the magnetic stirrer and start stirring. About 56 ml of dodecylbenzenesulfonic acid, a surfactant, was added to the distilled water and stirred for about 30 minutes. 15 ml of aniline as a precursor was added and stirred. Further distilled water was added to adjust the total reaction volume to 500 ml. After adding about 3.6 g of Ammonium peroxodisulfate as an initiator, the precursor was polymerized by stirring for about 12 hours from the time of addition. The composite is immersed in the resultant by a dip-coating method and taken out at a constant speed to form a coating layer on the surface. The catalyst completed as above is crushed using a ball mill.

(Manufacture of Electrolyte Membrane)

First, an ionomer solution containing 20 g of ionomer, 40 g of alcohol, and 40 g of distilled water is prepared. A second ion transport layer is prepared by applying the ionomer solution on a substrate. An ionomer may be impregnated into the reinforcement layer by stacking a porous reinforcement layer on the second ion transport layer.

Next, an ionomer solution containing 20 g of ionomer, 40 g of alcohol, 40 g of distilled water and 1 g of catalyst is prepared. This is coated on the reinforcement layer to prepare a first ion transport layer. An electrolyte membrane is prepared by vacuum drying the above laminate at about 100 ° C.

(Manufacture of membrane-electrode assembly)

A membrane-electrode assembly is manufactured by attaching a cathode to the first ion transport layer including the catalyst and an anode to the second ion transport layer.

As above, the production examples of the present invention have been described in detail, the scope of the present invention is not limited to the above-described production examples, and various modifications and modifications of those skilled in the art using the basic concept of the present invention defined in the following claims Modified forms are also included in the scope of the present invention.

10: electrolyte membrane 20: cathode 30: anode
Reference Numerals 100: ion transport layer 200: catalyst 210: complex 211: support 212: active metal
220: coating layer 300: reinforcement layer

Claims (28)

an ion transport layer comprising an ionomer; and
A catalyst dispersed in the ion transport layer; includes,
The catalyst
a composite comprising a polymer having a hydrogen ion conductive functional group and having a fibrous support and an active metal supported on the support; and
An electrolyte membrane for a membrane-electrode assembly comprising a coating layer coated on the surface of the composite. According to claim 1,
The electrolyte membrane for a membrane-electrode assembly, wherein the hydrogen ion conductive functional group includes at least one selected from the group consisting of a sulfonic acid group, a carboxyl group, a phosphate group, a quaternary ammonium group, and combinations thereof. According to claim 1,
The polymer is perfluoro sulfonic acid (PFSA), sulfonated-poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO), sulfonated polyethersulfone (SPES), sulfonated poly(ether ether ketone) (SPEEK) and their An electrolyte membrane for a membrane-electrode assembly comprising at least one selected from the group consisting of combinations. According to claim 1,
The support is an electrolyte membrane for a membrane-electrode assembly having a diameter of 1 μm or less. According to claim 1,
The support is an electrolyte membrane for a membrane-electrode assembly having a length of 0.1 μm to 1 μm. According to claim 1,
The electrolyte membrane for a membrane-electrode assembly in which the catalyst forms a net structure entangled with each other in the ion transport layer. According to claim 1,
The active metal is platinum; alloys of platinum and transition metals; And at least one selected from the group consisting of combinations thereof,
The transition metal is an electrolyte membrane for a membrane-electrode assembly comprising at least one selected from the group consisting of Fe, Co, Ni, Cr, Mn, Mo, Cu, V, Y, and combinations thereof. According to claim 1,
The coating layer is an electrolyte membrane for a membrane-electrode assembly comprising at least one selected from the group consisting of polyaniline, polypyrrole, and combinations thereof. According to claim 1,
The coating layer is an electrolyte membrane for a membrane-electrode assembly having a thickness of 1 nm to 100 nm. According to claim 1,
An electrolyte membrane for a membrane-electrode assembly comprising 0.5 parts by weight to 50 parts by weight of the catalyst based on 100 parts by weight of the ion transport layer. According to claim 1,
Further comprising a porous reinforcing layer impregnated with the ionomer,
An electrolyte membrane for a membrane-electrode assembly in which the ion transport layer is located on at least one surface of the reinforcement layer. According to claim 11,
The reinforcement layer is polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (e-PTFE), polyethylene (PE), polypropylene (PP), polyphenylene oxide (PPO), polybenzimidazole (PBI) ), polyimide (PI), polyvinylidene fluoride (PVdF), polyvinyl chloride (PVC), and at least one selected from the group consisting of combinations thereof. An electrolyte membrane for a membrane-electrode assembly. The electrolyte membrane of any one of claims 1 to 12;
a cathode located on one side of the electrolyte membrane; and
A membrane-electrode assembly comprising an anode located on the other side of the electrolyte membrane. According to claim 13,
the electrolyte membrane
Porous reinforcing layer;
a first ion transport layer located on one surface of the reinforcement layer and in contact with the cathode; and
A second ion transport layer located on the other surface of the reinforcement layer and in contact with the anode,
A membrane-electrode assembly in which the catalyst is included in the first ion transport layer. Forming a fibrous support by electrospinning a polymer having a hydrogen ion conductive functional group;
Forming a complex by supporting an active metal on the support;
preparing a catalyst by forming a coating layer covering the composite; and
A method of manufacturing an electrolyte membrane for a membrane-electrode assembly comprising: forming an electrolyte membrane by applying a solution containing the catalyst and the ionomer on a substrate. According to claim 15,
The method of manufacturing an electrolyte membrane for a membrane-electrode assembly, wherein the hydrogen ion conductive functional group includes at least one selected from the group consisting of a sulfonic acid group, a carboxyl group, a phosphate group, a quaternary ammonium group, and combinations thereof. According to claim 15,
The polymer is perfluoro sulfonic acid (PFSA), sulfonated-poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO), sulfonated polyethersulfone (SPES), sulfonated poly(ether ether ketone) (SPEEK) and their A method of manufacturing an electrolyte membrane for a membrane-electrode assembly comprising at least one selected from the group consisting of combinations. According to claim 15,
The support is a method for producing an electrolyte membrane for a membrane-electrode assembly having a diameter of 1 μm or less. According to claim 15,
The support is a method for producing an electrolyte membrane for a membrane-electrode assembly having a length of 0.1 μm to 1 μm. According to claim 15,
Method for producing an electrolyte membrane for a membrane-electrode assembly in which an active metal is deposited and supported on the support. According to claim 15,
The active metal is platinum; alloys of platinum and transition metals; And at least one selected from the group consisting of combinations thereof,
The transition metal is a method of manufacturing an electrolyte membrane for a membrane-electrode assembly comprising at least one selected from the group consisting of Fe, Co, Ni, Cr, Mn, Mo, Cu, V, Y, and combinations thereof. According to claim 15,
Injecting the precursor of the coating layer, a surfactant and an initiator into an aqueous solvent;
stirring the resultant to polymerize the precursor; and
A method of manufacturing an electrolyte membrane for a membrane-electrode assembly by forming a coating layer covering the composite through immersing the composite in the resulting product. The method of claim 22,
A method for producing an electrolyte membrane for a membrane-electrode assembly in which the molar ratio of the precursor and the surfactant is 1: 10 to 10: 1. The method of claim 22,
Method for producing an electrolyte membrane for a membrane-electrode assembly in which the molar ratio of the precursor and the initiator is 1: 0.1 to 1: 0.3. The method of claim 22,
The polymerization is a method for producing an electrolyte membrane for a membrane-electrode assembly performed in 12 hours or less. According to claim 15,
The method of manufacturing an electrolyte membrane for a membrane-electrode assembly, wherein the coating layer includes at least one selected from the group consisting of polyaniline, polypyrrole, and combinations thereof. According to claim 15,
The coating layer is a method for producing an electrolyte membrane for a membrane-electrode assembly having a thickness of 1 nm to 100 nm. According to claim 15,
The method of manufacturing an electrolyte membrane for a membrane-electrode assembly, wherein the solution comprises 0.5 parts by weight to 50 parts by weight of the catalyst based on 100 parts by weight of the ionomer.

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