KR20170125509A - Catalyst for anode, reversal tolerant anode for fuel cell and membrane electrode assembly comprising the same - Google Patents

Abstract

The present invention provides a catalyst for an anode in which an active metal is deposited in a metal oxide-based carrier in a rutile structure, and an anode for a fuel cell and a membrane electrode assembly comprising the same. According to an embodiment of the present invention, the catalyst for an anode comprises a metal oxide-based carrier in a rutile structure as a catalyst carrier, thereby not generating oxidation even reverse voltage is exposed for a long period of time, improving electric conductivity without carbon addition and improving durability of a membrane electrode assembly.

Description

TECHNICAL FIELD [0001] The present invention relates to a catalyst for an anode, a fuel cell anode, and a membrane electrode assembly for a fuel cell including the same. BACKGROUND ART [0002]

The present invention relates to a catalyst for an anode, an anode for a fuel cell and a membrane electrode assembly comprising the same, and more particularly to a catalyst for an anode in which an active metal is supported on a rutile structure metal oxide- To a fuel cell anode and a membrane electrode assembly.

The structure of a membrane electrode assembly (MEA) of a polymer electrolyte fuel cell is largely divided into an anode and a cathode, and a proton conductive polymer electrolyte membrane disposed between the anode and the cathode .

Generally, a plurality of such MEAs are stacked to construct a polymer electrolyte fuel cell stack. As the anode and cathode catalysts, homogeneous or heterogeneous noble metal nanoparticles, which can cause the oxidation reaction of the fuel and the reduction reaction of oxygen, respectively, are widely dispersed on the surface of the conductive porous support.

As the porous carrier, a carbon material is generally used. When the fuel cell vehicle equipped with the fuel cell stack is operated, flooding may occur in which the fuel gas flow path formed in the anode is clogged by the generated water or the humidifying water in the fuel cell. Further, when freezing below the freezing point, the water remaining in the anode freezes and the gas flow path of the anode may become clogged. In such a case, when the supply of the fuel (H ₂ ) to the anode is insufficient, the potential of the anode rises and a reverse voltage (or potential) phenomenon occurs in which the overall voltage of the fuel cell exhibits a negative value. In this case, since the carbon used as the catalyst supporting body gradually oxidizes or abruptly collapses the electrode structure, the performance of the fuel cell may be reduced.

For this purpose, studies have been actively carried out to utilize a carrier such as a transition metal oxide stable in the acidic region, but the electric conductivity is not high enough to sufficiently secure the performance of the fuel cell.

Therefore, there is a need to develop an anode capable of ensuring a stable and excellent fuel cell performance even when fuel is not supplied to the anode when driving the fuel cell vehicle while solving the above problems.

Patent Publication No. 2007-0055119

The present invention is intended to solve the above-mentioned problems.

A first object of the present invention is to provide a membrane electrode assembly (MEA), which can improve electrical conductivity without containing carbon and which can stably maintain the performance and durability of a membrane electrode assembly (MEA) And a catalyst for an anode.

A second technical object of the present invention is to provide an anode for a fuel cell including the anode catalyst.

A third object of the present invention is to provide a method of manufacturing the anode for a fuel cell.

A fourth object of the present invention is to provide a membrane electrode assembly and a fuel cell system including the anode for a fuel cell capable of improving the quality and life of the fuel cell.

In order to solve the above problems, the present invention provides an anode catalyst, characterized in that the active metal is supported on a metal oxide-based carrier having a rutile structure.

The present invention also provides an anode for a fuel cell, characterized in that it comprises a catalyst for the anode and a binder.

The present invention also relates to a method for preparing a catalyst, which comprises the steps of: supporting an active metal on a metal oxide-based carrier having a rutile structure to obtain a catalyst; And a step of obtaining an anode using a catalyst slurry containing the catalyst and a binder.

In addition, the present invention provides an anode comprising the anode catalyst; Cathode; And a polymer electrolyte membrane disposed between the cathode and the anode.

Further, the present invention provides a fuel cell system including the membrane electrode assembly.

The catalyst for an anode according to the present invention includes a metal oxide-based carrier having a rutile structure as a catalyst carrier, so that even when a reverse voltage is exposed for a long time, oxidation does not occur and electrical conductivity can be improved without adding carbon And the durability of the membrane electrode assembly can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description of the invention, It should not be construed as limited.
1 is a graph comparing current densities according to cell voltages of Example 1 and Comparative Examples 1 and 2 according to an embodiment of the present invention.
FIG. 2 is a graph showing cell voltage performance measurement results according to reverse voltage time after stopping hydrogen supply in Example 1 and Comparative Example 1 according to an embodiment of the present invention. FIG.
3 is a graph illustrating a result of measuring the endurance performance (CV) of the anode according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail in order to facilitate understanding of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

The catalyst for an anode of the present invention is characterized in that an active metal is supported on a metal oxide-based carrier having a rutile structure.

Generally, as a catalyst for an anode, a carbon-based catalyst having high electrical conductivity is used. In this case, carbon oxidation can be easily caused when a reverse voltage is exposed for a long time, so that the electrode structure may collapse and fuel cell performance may decrease.

The catalyst for an anode according to an embodiment of the present invention includes a metal oxide system having a rutile structure as a catalyst carrier so that oxidation does not occur even when a reverse voltage is exposed for a long time and electric conductivity And the performance and durability of the membrane electrode assembly (MEA) can be improved. This can contribute to improvement of the quality of the fuel cell and prolongation of the life of the fuel cell.

Therefore, the catalyst for an anode according to an embodiment of the present invention can be a non-carbon catalyst that does not contain a commonly used carbon. Even without carbon addition, while ensuring the performance of an MEA of the same or higher level using a carbon carrier, The problem of deterioration of the performance of the fuel cell due to oxidation of the carrier can be solved.

Specifically, the catalyst for an anode according to an embodiment of the present invention may be loaded with an active metal on a metal oxide-based carrier having a rutile structure. The metal oxide system may be a titanium-based oxide (TiO ₂ ) having a rutile structure.

The titanium-based oxide according to an embodiment of the present invention is not particularly limited as long as it has a rutile structure, and examples thereof include titanium dioxide (TiO ₂ ), solid titanium acid chloride, solid titanium oxide sulfate, and solid titanium Acid hydroxides, and mixtures of two or more thereof.

In addition, the titanium-based oxide is widely used as a semiconductor material and can be converted into a rutile structure to exhibit increased electrical conductivity after doping and / or reducing treatment. The titanium-based oxide of the rutile structure is both mechanically and chemically stable / fairly inert in the electrolyte within the cell, both during current passage and during open circuit.

If the metal oxide-based support is a rutile structure, such as a rutile structure, for example, an anatase structure, since the transfer energy of electrons is high due to a wide band gap, the electric conductivity The performance of the MEA may be deteriorated.

The active metal may be at least one selected from the group consisting of Pt, Ru, Sn, Pd, Ti, V, (Cr), Mn, Fe, Co, Ni, Cu, Zn, Al, And at least one selected from tungsten (W), iridium (Ir), osmium (Os), rhodium (Rh), niobium (Nb), tantalum (Ta), zirconium (Zr) Metal.

The active metal may be supported in an amount of 0.1 to 70 parts by weight, specifically 1 to 60 parts by weight, more specifically 5 to 40 parts by weight, based on 100 parts by weight of the metal oxide-based carrier.

When the metal oxide-based carrier is used in an excessively small amount in supporting the active metal on the metal oxide-based carrier, the active area of the reaction is insufficient, so that the electrode may not exhibit good performance. In addition, when the metal oxide-based carrier is excessively used, sintering of the catalyst is increased, and the particles are agglomerated with the surrounding particles, resulting in a decrease in utilization efficiency of the catalyst and an increase in the price of the electrode. have.

Meanwhile, the present invention can provide an anode for a fuel cell including the anode catalyst and the binder.

The binder can diffuse the proton conducting active region into the bulk catalyst layer. In addition, it acts as a binder for imparting mechanical stability, and can prevent dehydration of a hydrophilic agent containing a moisture and a membrane.

Specifically, the binder may be a polymer resin having hydrogen ion conductivity. Examples of the binder include a polymer resin having a cation-exchange group selected from the group consisting of a sulfonic acid group, a carboxylic acid group, a phosphoric acid group, a phosphonic acid group, and derivatives thereof in a side chain. Specific examples of such a polymer resin include fluorine-based polymers, benzimidazole-based polymers, polyimide-based polymers, polyetherimide-based polymers, polyphenylene sulfide-based polymers, polysulfone-based polymers, polyether sulfone-based polymers, A polymer, a polyether-ether ketone-based polymer, and a polyphenylquinoxaline-based polymer, or two or more kinds of the hydrogen-ion conductive polymers.

More specific examples of the polymer resin include copolymers of tetrafluoroethylene and fluorovinyl ether containing poly (perfluorosulfonic acid), poly (perfluorocarboxylic acid), or sulfonic acid group. (2,2'-m-phenylene) -5,5'-bibenzimidazole] and poly (2, 2'-m-phenylene) , 5-benzimidazole), a hydrogen ion-conducting polymer in which a cation-exchange group selected from the group consisting of a sulfonic acid group, a carboxylic acid group, a phosphoric acid group, a phosphonic acid group and derivatives thereof is bonded to the side chain .

The binder may be used singly or in the form of a mixture, and may also optionally be used together with a nonconductive compound for the purpose of further improving adhesion to the polymer electrolyte membrane. It is preferable to adjust the amount thereof to suit the purpose of use.

Examples of the nonconductive compound include polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), ethylene / tetrafluoro A copolymer of ethylene / tetrafluoroethylene (ETFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), polyvinylidene fluor-4-olide, polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP ), Dodecylbenzenesulfonic acid and sorbitol, or a mixture of two or more thereof.

The anode for a fuel cell according to an embodiment of the present invention may further include a water electrolysis catalyst.

The above-mentioned water-electrolytic catalyst includes, for example, a metal material containing iridium (Ir), a metal material containing ruthenium (Ru), an oxide containing iridium (Ir), an oxide containing ruthenium (Ru) An oxide containing a mixture of ruthenium (Ru) and ruthenium (Ru), and a mixture of iridium (Ir) and ruthenium (Ru) or a mixture of two or more thereof.

According to an embodiment of the present invention, the mixing ratio of the anode catalyst and the water-electrolytic catalyst may be 1: 0.01 to 1, specifically 1: 0.05 to 0.8, more specifically 1: 0.05 to 0.5 in terms of weight ratio. When using the above-described water-electrolytic catalyst, the stability and long-term durability of the MEA can be further improved.

Meanwhile, the present invention can provide a method of manufacturing the anode for a fuel cell.

Specifically, the method for producing an anode for a fuel cell includes the steps of: (i) carrying an active metal on a metal oxide-based carrier having a rutile structure to obtain a catalyst; And a step (ii) of obtaining the anode using the catalyst slurry containing the catalyst and the binder).

The step i) is a step of obtaining a catalyst by supporting an active metal on a metal oxide-based carrier having a rutile structure, wherein the active metal is contained in an amount of 0.1 to 70 parts by weight, specifically 1 To 60 parts by weight, more specifically 5 to 40 parts by weight.

In addition, step ii) is a step of obtaining an anode using the catalyst slurry containing the catalyst and a binder, and the content of the binder is preferably 1 to 70 parts by weight, more preferably 15 to 60 parts by weight Is more preferable.

If the content of the binder is insufficient, it may be difficult for both of them to approach the catalyst. If the amount of the binder is too large, the electrical conductivity may be lowered and the electrical conduction path and the gas movement channel of the porous layer may be blocked to cause flooding. The performance of the electrode may be deteriorated.

In addition, the catalyst slurry for an anode may include a solvent, and the solvent may serve as a dispersant.

According to one embodiment of the present invention, the solvent may be an aqueous solvent or an organic solvent. The aqueous solvent may comprise, for example, water, an alcohol or a mixture thereof. The alcohol may include at least one alcohol selected from the group consisting of isopropyl alcohol (IPA) and ethanol. In addition, the organic solvent may improve the dispersibility of the anode catalyst slurry. The organic solvent may include at least one selected from the group consisting of N-methyl-2-pyrrolidone (NMP), N, N-dimethylacetamide (DMAc) and N, N-dimethylformamide .

The content of the solvent is not particularly limited and may be appropriately adjusted within a range that does not excessively deteriorate the environment of the operator as the amount of slurry that can be coated as a result of mixing is formed.

Specifically, the solvent may be used in an amount of 5 to 2,000 parts by weight based on 100 parts by weight of the catalyst. Specifically, when an aqueous solvent is used, it may be used in an amount of 5 to 1,500 parts by weight based on 100 parts by weight of the catalyst, and in an amount of 50 to 1,500 parts by weight based on 100 parts by weight of the catalyst when an organic solvent is used. If the content of the solvent is within the above range, a smooth electrode coating can be achieved. When the content of the solvent exceeds the above range, it is necessary to take into account that the thickness of the electrode to be manufactured becomes thin and the thickness of the electrode to be produced becomes thick when the content of the solvent is small.

According to the method of manufacturing an anode for a fuel cell according to an embodiment of the present invention, the catalyst slurry may further include a water electrolysis catalyst.

Specifically, for example, the catalyst slurry is prepared by mixing a catalyst for an anode, a small amount of deionized water, a catalyst for electrolysis, and then adding a binder, mixing, stirring, and ultrasonic ), And then a mixture of a catalyst for an anode, a mixture of a hydrotreating catalyst and a binder is put into a certain amount of solvent, and the mixture is repeatedly mixed with stirring, ultrasonication, etc. several times for a predetermined time, Can be manufactured.

Further, in order to form the anode, the catalyst slurry prepared by mixing as described above can be coated on the electrode substrate (gas diffusion layer). As the electrode substrate, for example, carbon paper, more preferably water repellent carbon paper, more preferably water repellent carbon paper coated with water repellent carbon black layer, or carbon cloth have. The water-repellent carbon paper contains about 5 to 50% by weight of a hydrophobic polymer such as PTFE, and the hydrophobic polymer can be sintered. The water repellent treatment of the electrode substrate is for securing both the polar liquid reactant and the gas reactant passage. In the water-repellent carbon paper having a water-repellent treated carbon black layer, the water-repellent carbon black layer contains about 20 to 50% by weight of a hydrophobic polymer such as carbon black and a hydrophobic binder such as PTFE, And is attached to one surface of the water-repellent carbon paper. The hydrophobic polymer in the water-repellent treated carbon black layer is sintered.

The catalyst slurry may be applied to one surface of the electrode substrate to form a catalyst layer. When the electrode substrate is a water-repellent carbon paper having a water-repellent carbon black layer, the slurry can be applied on the water-repellent carbon black layer. Examples of the method of applying the slurry include, but are not limited to, printing, spraying, painting or doctor blading.

The application amount or thickness of the slurry is not particularly limited and can be appropriately adjusted in consideration of the composition of the slurry, the amount of catalyst supported on the electrode to be obtained, and the like.

The electrode coated with the catalyst slurry on the electrode substrate can be completed as an electrode by drying in a heating apparatus having a heating space such as an oven or a furnace. The temperature of the heating apparatus is preferably 40 to 180 ° C, and the drying time is preferably 40 minutes to 3 hours.

According to an embodiment of the present invention, the fuel cell may be a polymer electrolyte fuel cell.

The present invention provides an anode comprising the anode catalyst; Cathode; And a polymer electrolyte membrane positioned between the cathode and the anode.

The membrane electrode assembly may be manufactured by a conventional method used in the art. For example, the membrane electrode assembly may be completed by thermocompression bonding the anode and the cathode to the polymer electrolyte membrane.

More specifically, the membrane electrode assembly can be manufactured by placing the dried electrodes, that is, the anode and the cathode, on both ends of the polymer electrolyte membrane and thermocompression.

The thermocompression bonding temperature may be, for example, 100 to 180 ° C., the thermocompression bonding time may be 0.5 to 30 minutes, and the thermocompression pressure may be 50 to 300 kgf / cm 2. To form a final membrane electrode assembly.

The cathode may include an electrode substrate and a catalyst layer including a catalyst for the cathode. At this time, the electrode substrate serves to support the electrode, and diffuses the fuel and the oxidant into the catalyst layer, so that the fuel and the oxidant can easily access the catalyst layer. As the electrode substrate, a conductive substrate is used, and typical examples thereof include, but are not limited to, carbon paper, carbon cloth or carbon felt.

The present invention can also provide a fuel cell system including the membrane electrode assembly.

The fuel cell system may be manufactured by a conventional method known in the art. In addition, the fuel cell can be applied to various structures such as a tubular stack, a flat tubular stack, or a planar type stack.

The fuel cell system according to an embodiment of the present invention includes a membrane electrode assembly, and a separator positioned on both surfaces of the membrane electrode assembly. The fuel cell system includes at least one An electricity generating unit; A fuel supply unit for supplying the fuel to the electricity generation unit; And an oxidant supply unit for supplying the oxidant to the electricity generating unit.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to examples. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

[ Example  One]

≪ Preparation of Catalyst for Anode >

120 mg of NaOH was added to 100 ml of ethylene glycol and stirred. 430 mg of rutile TiO ₂ (Degussa) was dispersed in 50 ml of ethylene glycol. The above two solutions were mixed and stirred, and 235 mg of Pt salt (PtCl ₄ ) was dissolved therein. The above mixed solution was reacted at 145 to 168 ° C for 3 to 8 hours in an air atmosphere, and then cooled to room temperature. After adding 0.5 M sulfuric acid solution to lower the pH of the solution to 1 to 5 or less, the solution was transferred to a filter and filtered with a fine filter paper, followed by washing and drying to obtain a Pt / TiO ₂ catalyst. As a result of ICP analysis, the Pt (platinum) content of the supported catalyst was 24.5%.

≪ Preparation of MEA &

Hyofon (solid content: 24.5%) as a commercially available binder ( _{trade name} ) and isopropyl alcohol (IPA) as a solvent were mixed in amounts of 18 parts by weight and 900 parts by weight, respectively, based on 100 parts by weight of the Pt / TiO ₂ catalyst Thereby preparing a catalyst slurry for an anode.

The anode catalyst slurry was coated on a PEN film and dried at a temperature of about 80 for about 8 hours to prepare an anode.

Further, a Pt / C catalyst (manufactured by TKK) was added to the Hyflon to prepare a catalyst slurry for a cathode. The prepared catalyst slurry for a cathode was coated on the PEN film and the cathode was prepared through a conventional process.

The cathode and the anode were thermocompression-bonded to the commercial polymer electrolyte membrane at a temperature of 120 ° C and a pressure of 25 kgf / cm 2 to prepare a membrane electrode assembly (MEA).

[ Example  2]

Pt / TiO faucet when mixed with _two catalysts and a binder to and is the same as example 1 except that a mixture of iridium oxide in an amount of 5 parts by weight based on 100 parts by weight of the Pt / TiO ₂ catalyst perform as a catalyst to an MEA .

[ Comparative Example  One]

MEA was prepared in the same manner as in Example 1 except that Pt / C catalyst (manufactured by TKK) was used instead of Pt / TiO ₂ catalyst in the production of an anode.

[ Comparative Example  2]

Except that a Pt / TiO ₂ catalyst (anatase, Sigma Aldrich) in which TiO ₂ having an anatase structure was used instead of Pt / TiO ₂ catalyst was used in the preparation of the anode, MEA .

[ Experimental Example  1] Measurement of current density according to voltage

Example applied Pt / TiO body is supported in the rutile structure of one _second catalyst, in Comparative Example 1, the catalytic activity of the carbon-supported body is applied to Pt / C catalyst, and Comparative Example 2 the anatase structure bearing body applied Pt / TiO ₂ catalyst of Comparative , The polarization curve of the MEA was measured.

As can be seen from FIG. 1, it was found that the MEA performance of the Pt / TiO ₂ catalyst of Comparative Example 2 was significantly lower than that of the Pt / TiO ₂ catalyst of Example 1 of the present invention , And after 800 mA / cm < 2 >, the voltage gradient is remarkably decreased. In particular, it can be seen that Example 1 of the present invention exhibits a higher current density, i.e., 1600 mA / cm 2, at each 0.55 V, whereas 1200 mA / cm 2 of Comparative Example 2.

It is also confirmed that the MEA performance in the case of using the Pt / TiO ₂ catalyst of Example 1 of the present invention is similar to that of the MEA in the case of using the Pt / C catalyst of Comparative Example 1 using the carbon carrier. In this case, in the case of Example 1 of the present invention, carbon is not included in the application of the anode reverse voltage, thereby supporting long-term durability without oxidizing carbon.

[ Experimental Example  2] After stopping the hydrogen supply Reverse voltage  Over time Cell voltage  Performance measurement

In order to evaluate the anode reverse voltage of the MEA according to the use of the Pt / TiO ₂ catalyst of Example 1 and the Pt / C catalyst of Comparative Example 1, the hydrogen supply was stopped and 1.2 A / Respectively.

As can be seen from FIG. 2, the anode of the MEA using the Pt / TiO ₂ catalyst of Example 1 showed almost no change in the voltage gradient even when the reverse voltage was generated, while the Pt / It can be seen that the anode slope of the anode of the MEA using the catalyst decreases sharply with time as the reverse voltage is generated. In particular, it can be seen that when the supply of hydrogen is stopped and 1.2 A / cm 2 is applied, the slope is decreased by 30% or more within 1 hour.

[Experimental Example 3] Cyclic voltammogram (CV) durability measurement of the anode

In order to measure the CV (cyclic voltammogram) durability of the anode of the MEA using the Pt / TiO ₂ catalyst of Example 1, conditions of relative humidity (relative humidity) (RH) of 100, 1 bar, H ₂ / N ₂ CV cycle experiment was performed. At this time, the CV cycle test was performed at 0.1 to 1.2 V, and the scan speed was 100 mV / s.

As can be seen from FIG. 3, the anode of the MEA of Example 1 shows almost no CV performance change up to 1500 cycles. Particularly, it can be seen that Example 1 is lower than Comparative Example 1 in which the constant of the x value indicating the slope is -0.7 to -0.5, so that the deterioration rate of the MEA is excellent. This supports the improvement of the anode's robustness against platinum dissolution.

Claims (20)

Wherein the active metal is supported on a metal oxide-based carrier having a rutile structure. The method according to claim 1,
Wherein the metal oxide system is a titanium oxide. The method of claim 2,
Wherein the titanium-based oxide is any one selected from the group consisting of titanium dioxide (TiO ₂ ), solid titanium acid chloride, solid titanium sulfate, and solid titanium hydroxide, or a mixture of two or more thereof catalyst. The method according to claim 1,
Wherein the catalyst is a non-carbon-based catalyst. The method according to claim 1,
The active metal may be at least one selected from the group consisting of Pt, Ru, Sn, Pd, Ti, V, Cr, Mn, (Co), Ni, Cu, Zn, Al, Mo, Se, T, Ir, Os, Rh, Wherein the anode catalyst contains any one selected from the group consisting of Rh, Nb, Ta, Zr and Pb or a mixed metal of two or more thereof. The method according to claim 1,
Wherein the active metal is contained in an amount of 0.1 to 70 parts by weight based on 100 parts by weight of the metal oxide-based carrier. An anode for a fuel cell, comprising the catalyst for an anode of claim 1 and a binder. The method of claim 7,
Wherein the anode further comprises a water electrolysis catalyst. The method of claim 8,
Wherein the mixing ratio of the anode catalyst and the water-dissolving catalyst is 1: 0.01 to 1 in weight ratio. The method of claim 8,
The electrolytic solution of the present invention is characterized in that the electrolytic solution of the electrolytic solution contains iridium (Ir), ruthenium (Ru), iridium (Ir), ruthenium (Ru) Ru), and a mixture of iridium (Ir) and ruthenium (Ru), or a mixture of two or more thereof. The method of claim 7,
Wherein the catalyst is a non-carbon-based catalyst. Supporting an active metal on a metal oxide-based carrier having a rutile structure to obtain a catalyst; And
And obtaining an anode using a catalyst slurry containing the catalyst and a binder. The method of claim 12,
Wherein the metal oxide system is a titanium-based oxide. 14. The method of claim 13,
Wherein the titanium-based oxide is any one selected from the group consisting of titanium dioxide (TiO ₂ ), solid titanium acid chloride, solid titanium sulfate, and solid titanium hydroxide, or a mixture of two or more thereof. A method of manufacturing an anode. The method of claim 12,
Wherein the catalyst slurry further comprises a water electrolysis catalyst. 16. The method of claim 15,
The mixing ratio of the anode catalyst and the water-electrolytic catalyst is 1: 0.01 1 < / RTI > to < RTI ID = 0.0 > 1. < / RTI > 16. The method of claim 15,
The electrolytic solution of the present invention is characterized in that the electrolytic solution of the electrolytic solution contains iridium (Ir), ruthenium (Ru), iridium (Ir), ruthenium (Ru) Ru), and a mixture of iridium (Ir) and ruthenium (Ru), or a mixture of two or more thereof. The method of claim 12,
Wherein the fuel cell is a polymer electrolyte fuel cell. An anode comprising the catalyst for an anode of claim 1;
Cathode; And
And a polymer electrolyte membrane disposed between the cathode and the anode. The fuel cell system according to claim 19, comprising the membrane electrode assembly.

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