An ordered high temperature proton exchange membrane fuel cell membrane electrode and a preparation method thereof

Abstract

The application discloses an ordered high-temperature proton exchange membrane fuel cell membrane electrode and a preparation method thereof, and comprises the following steps: S1, preparing a modified cathode gas diffusion layer: providing a cathode gas diffusion layer, the cathode gas diffusion layer comprising a support layer and a microporous layer, the surface of the microporous layer being used for forming an ordered cathode catalyst layer; forming an insulating layer on the surface of the support layer, and immersing the cathode gas diffusion layer in a mixed solution containing a binder and an amino silane coupling agent, so that the amino silane coupling agent is uniformly bonded on the cathode gas diffusion layer, thereby obtaining the modified cathode gas diffusion layer; S2, preparing the ordered cathode catalyst layer: placing the modified cathode gas diffusion layer in an electrodeposition solution, the electrodeposition solution comprising a platinum source precursor and perchloric acid; uniformly depositing the platinum catalyst on the amino silane coupling agent by using an electrodeposition method; then coating an ionomer solution on the surface of the platinum catalyst, and forming the ordered cathode catalyst layer after drying; S3, preparing the ordered high-temperature proton exchange membrane fuel cell membrane electrode: removing the insulating layer; providing a proton exchange membrane, and placing an anode catalyst layer and an anode gas diffusion layer on a second surface of the proton exchange membrane in sequence with the first surface of the proton exchange membrane facing the ordered cathode catalyst layer, and then hot-pressing to obtain the ordered high-temperature proton exchange membrane fuel cell membrane electrode.

Description

Technical Field

[0001] The present invention relates to the field of high-temperature proton exchange membrane fuel cells, and in particular to an ordered high-temperature proton exchange membrane fuel cell membrane electrode and a preparation method thereof. Background Art

[0002] High-temperature proton exchange membrane fuel cells (HT-PEMFCs) have attracted considerable attention due to their rapid electrochemical reaction kinetics, strong impurity tolerance, and simplified hydrothermal management. They hold broad application prospects in portable power supplies, mobile power stations, combined heat and power generation, and vehicle and vessel propulsion. With the expansion of the application market and the advancement of industrialization, the performance, durability, and cost requirements for PEMFCs have increased significantly, and so have the requirements for their core components—the membrane electrode.

[0003] The membrane electrode is composed of a proton exchange membrane, an anode gas diffusion layer, a cathode gas diffusion layer, an anode catalyst layer, and a cathode catalyst layer. In the cathode catalyst layer, oxygen is transferred to the cathode catalyst, where it reacts with the cathode catalyst to produce water, which is then discharged from the cathode catalyst layer. However, most existing cathode catalyst layers are disordered, and the Pt catalyst and carbon support in the catalyst layer are in a disordered state (the Pt catalyst and carbon support are randomly distributed in the catalyst layer). As a result, existing cathode catalyst layers often have the following problems:

[0004] 1. Difficulty in transporting water and oxygen in the catalytic layer:

[0005] In the disordered cathode catalytic layer, the Pt catalyst and carbon support are in a disordered state, resulting in disordered pores between adjacent Pt catalysts and carbon support. The water and oxygen transmission channels formed by these disordered pores are usually tortuous or even blocked, making the transmission of water and oxygen in the catalytic layer difficult.

[0006] 2. Low catalyst utilization in the catalytic layer:

[0007] In a disordered cathode catalyst layer, the random distribution of Pt catalysts leads to a disordered catalytic reaction in various regions of the layer. For example, in some areas of the layer, the Pt catalyst content is high, but the reactant oxygen content is low. This results in only a portion of the catalyst in that area being catalytic, while the rest is inactive. Consequently, the catalyst cannot be fully utilized, resulting in low catalyst utilization in the layer. Summary of the Invention

[0008] The purpose of the present invention is to solve the technical problems of difficult water and oxygen transmission in the cathode catalyst layer of existing batteries and low utilization rate of Pt catalyst.

[0009] In order to achieve the above object, the present invention provides a method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode, comprising the following steps:

[0010] S1. Prepare a modified cathode gas diffusion layer: provide a cathode gas diffusion layer, the cathode gas diffusion layer comprising: a microporous layer and a support layer, the surface of the microporous layer is used to form an ordered cathode catalyst layer; form an insulating layer on the surface of the support layer, immerse the cathode gas diffusion layer in a mixed solution containing a binder and an aminosilane coupling agent, so that the aminosilane coupling agent is uniformly bonded to the cathode gas diffusion layer, and obtain a modified cathode gas diffusion layer.

[0011] S2, preparing an ordered cathode catalyst layer: placing the modified cathode gas diffusion layer in an electrodeposition solution, the electrodeposition solution comprising: a platinum source precursor and perchloric acid; uniformly depositing a platinum catalyst on the aminosilane coupling agent by an electrodeposition method; then coating the surface of the platinum catalyst with an ionomer solution, and forming an ordered cathode catalyst layer after drying.

[0012] S3, preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode: removing the insulating layer; providing a proton exchange membrane, with the first surface of the proton exchange membrane facing the ordered cathode catalyst layer, and then placing an anode catalyst layer and an anode gas diffusion layer in sequence on the second surface of the proton exchange membrane, and hot pressing to obtain the ordered high-temperature proton exchange membrane fuel cell membrane electrode.

[0013] Optionally, in step S1, the insulating layer is formed by adhering an insulating tape on the surface of the supporting layer; and in step S3, the insulating layer is removed by tearing off the insulating tape.

[0014] Optionally, in step S1, the binder is a perfluorinated sulfonic acid resin, and the mass ratio of the binder to the aminosilane coupling agent is 1:(90-99).

[0015] Optionally, in step S2, the platinum source precursor is chloroplatinic acid, and the mass ratio of the platinum source precursor to perchloric acid is 1:(1-2).

[0016] Optionally, in step S2, the ionomer is polybenzimidazole and / or poly(pentafluorostyrene), and the mass percentage concentration of the ionomer in the ionomer solution is 1% to 3%.

[0017] Optionally, the support layer is carbon paper and / or carbon cloth.

[0018] The present invention also provides an ordered high-temperature proton exchange membrane fuel cell membrane electrode, which is prepared by the above method.

[0019] The present invention provides an ordered high-temperature proton exchange membrane fuel cell membrane electrode, which is made of an ordered cathode catalyst layer. The preparation principle of the ordered cathode catalyst layer is as follows:

[0020] The present invention first places the gas diffusion layer in a mixed solution of a uniformly dispersed aminosilane coupling agent and a binder, allowing the aminosilane coupling agent to evenly bond to the gas diffusion layer. The gas diffusion layer is then placed in a platinum source precursor, allowing platinum ions to complex with the aminosilane coupling agent, thereby evenly loading the platinum ions onto the gas diffusion layer. Because the aminosilane coupling agent is evenly bonded to the gas diffusion layer, the complexed platinum ions are also evenly loaded onto the gas diffusion layer.

[0021] Furthermore, after the platinum ions are uniformly complexed, the platinum ions are in situ reduced to Pt catalysts by electrodeposition, so that the Pt catalysts are evenly distributed on the gas diffusion layer to form the ordered cathode catalyst layer of the present invention. The ordered cathode catalyst layer forms the ordered high-temperature proton exchange membrane fuel cell membrane electrode of the present invention.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention provides an ordered high-temperature proton exchange membrane fuel cell membrane electrode, formed by an ordered cathode catalyst layer. In this ordered cathode catalyst layer, the Pt catalyst is evenly distributed, allowing for orderly water and oxygen transport within the cathode catalyst layer, thus resolving the difficulty in water and oxygen transport in existing disordered cathode catalyst layers.

[0024] Furthermore, in the ordered high-temperature proton exchange membrane fuel cell membrane electrode provided by the present invention, oxygen and Pt catalyst are evenly distributed in the cathode catalyst layer, so that the oxygen and Pt catalyst in each region of the cathode catalyst layer are relatively consistent. The loading amount of the Pt catalyst can be adjusted according to the flow rate of oxygen in each region, so that the Pt catalyst can be fully utilized, thereby improving the utilization rate of the Pt catalyst.

[0025] 2. In existing fuel cell membrane electrodes, the Pt catalyst usually needs to be loaded on a carbon carrier before it can be bound to the cathode gas diffusion layer. When such a fuel cell is at a high potential for a long time, the carbon carrier will corrode, causing the Pt catalyst to fall off, greatly shortening the service life of the fuel cell.

[0026] In the ordered high-temperature proton exchange membrane fuel cell membrane electrode provided by the present invention, the Pt catalyst is directly loaded on the gas diffusion layer through an aminosilane coupling agent without the need to add a carbon carrier, thereby solving the problem of short fuel cell service life caused by the use of carbon carriers in existing fuel cell membrane electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a schematic diagram of the structure of the ordered high-temperature proton exchange membrane fuel cell membrane electrode in Example 1 of the present invention. 1-anode gas diffusion layer, 2-anode catalyst layer, 3-proton exchange membrane, 4-ordered cathode catalyst layer, 5-cathode gas diffusion layer.

[0028] Figure 2 This is a scanning electron microscope image of the ordered cathode catalyst layer and cathode gas diffusion layer in Example 1 of the present invention.

[0029] Figure 3 Polarization curves of membrane electrodes in Example 1 and Comparative Examples 1-2 of the present invention.

[0030] Figure 4 The impedance curves of the membrane electrodes in Example 1 and Comparative Examples 1-2 of the present invention are shown. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0032] The present invention provides a method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode, comprising the following steps:

[0033] S1. Prepare a modified cathode gas diffusion layer: provide a cathode gas diffusion layer, the cathode gas diffusion layer comprising: a microporous layer and a support layer, the surface of the microporous layer is used to form an ordered cathode catalyst layer; form an insulating layer on the surface of the support layer, immerse the cathode gas diffusion layer in a mixed solution containing a binder and an aminosilane coupling agent, so that the aminosilane coupling agent is uniformly bonded to the cathode gas diffusion layer, and obtain a modified cathode gas diffusion layer.

[0034] Since only the microporous layer surface of the cathode gas diffusion layer is in contact with the cathode catalyst layer, and the support layer surface is not in contact with the cathode catalyst layer, the present invention only forms the cathode catalyst layer on the microporous layer surface and forms an insulating layer on the support layer surface to avoid subsequent electrodeposition to form the cathode catalyst layer on the support layer surface.

[0035] Furthermore, the insulating layer may be formed on the surface of the support layer by adhering an insulating tape to the surface of the support layer; after the cathode catalyst layer is prepared, the insulating tape may be torn off to remove the insulating layer.

[0036] S2, preparation of ordered cathode catalyst layer:

[0037] The modified cathode gas diffusion layer is placed in an electroplating solution, wherein the electroplating solution comprises a platinum source precursor and perchloric acid; and a platinum catalyst is uniformly deposited on the aminosilane coupling agent by an electroplating method.

[0038] The purpose of placing the modified cathode gas diffusion layer in the electrodeposition solution is to allow the platinum ions in the platinum source precursor to be complexed with the aminosilane coupling agent. The principle is as follows.

[0039] When aminosilane coupling agent, perchloric acid, and platinum source precursor are present at the same time, the platinum ions in the platinum source precursor will be complexed to the aminosilane coupling agent. The reaction formula is as follows:

[0040]

[0041] After platinum ions are complexed with the aminosilane coupling agent, they are in situ reduced to a platinum metal catalyst under electrodeposition conditions. An ionomer solution is then applied to the surface of the platinum catalyst, which is dried to form an ordered cathode catalyst layer.

[0042] S3, preparation of ordered high temperature proton exchange membrane fuel cell membrane electrode:

[0043] removing the insulating layer;

[0044] A proton exchange membrane is provided, and the first surface of the proton exchange membrane is directed toward the ordered cathode catalyst layer. An anode catalyst layer and an anode gas diffusion layer are sequentially placed on the second surface of the proton exchange membrane, and hot pressing is performed to obtain the ordered high-temperature proton exchange membrane fuel cell membrane electrode.

[0045] The present invention forms an ordered high-temperature proton exchange membrane fuel cell membrane electrode by preparing an ordered cathode catalyst layer. In the ordered cathode catalyst layer, the Pt catalyst is evenly distributed, and water and oxygen are transported in an orderly manner in the cathode catalyst layer, solving the problem of difficult water and oxygen transport in the existing disordered cathode catalyst layer.

[0046] Furthermore, in the ordered high-temperature proton exchange membrane fuel cell membrane electrode provided by the present invention, oxygen and Pt catalyst are evenly distributed in the cathode catalyst layer, so that the oxygen and Pt catalyst in each region of the cathode catalyst layer are relatively consistent. The loading amount of the Pt catalyst can be adjusted according to the flow rate of oxygen in each region, so that the Pt catalyst can be fully utilized, thereby improving the utilization rate of the Pt catalyst.

[0047] The loading amount of the Pt catalyst can be adjusted by adjusting the amount of the aminosilane coupling agent bonded to the cathode gas diffusion layer and the amount of the platinum source precursor in the electrodeposition solution.

[0048] The present invention is described in detail below with reference to the embodiments.

[0049] Example 1

[0050] This embodiment provides a method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode, comprising the following steps:

[0051] (1) Preparation of modified cathode gas diffusion layer:

[0052] a. Preparation of the cathode gas diffusion layer. The cathode gas diffusion layer in this example was prepared by mixing Vulcan XC-72 carbon powder and PTFE emulsion, adding an appropriate amount of ethanol, and ultrasonically stirring to prepare a slurry. This slurry was then applied to the surface of commercial Toray carbon paper (support layer) to form a microporous layer. The slurry was then heat-treated in a muffle furnace at 340°C for 30 minutes, and then cooled to room temperature to obtain the cathode gas diffusion layer.

[0053] The thickness of the Toray carbon paper is 150 microns, and the carbon powder loading in the microporous layer is 2 mg / cm 2 , the PTFE content is 30%, and the thickness of the microporous layer is 30 microns.

[0054] An insulating tape was adhered to one side of the Toray carbon paper of the cathode gas diffusion layer to form an insulating layer on the surface of the support layer of the cathode gas diffusion layer.

[0055] b. Prepare a mixed solution (99% aminosilane coupling agent, 1% Nafion) uniformly mixed with an aminosilane coupling agent (purchased from Aladdin), isopropyl alcohol (purchased from Shanghai Lingfeng Chemical Reagent Co., Ltd.), water and a binder perfluorinated sulfonic acid resin (Nafion, purchased from DuPont). Immerse the cathode gas diffusion layer treated in step a in the mixed solution for 20 to 40 minutes to uniformly bond the aminosilane coupling agent to the cathode gas diffusion layer to obtain a modified cathode gas diffusion layer.

[0056] The isopropyl alcohol and water act as solvents to dissolve the aminosilane coupling agent and the perfluorinated sulfonic acid resin.

[0057] (2) An electrodeposition solution consisting of a platinum source precursor (chloroplatinic acid H2PtCl6) and perchloric acid (2% chloroplatinic acid, 3% perchloric acid) was prepared. The solvent tetrahydrofuran (THF) was purchased from Shanghai Lingfeng Chemical Reagent Co., Ltd.

[0058] The modified cathode gas diffusion layer treated in step (1) is placed in an electrodeposition solution, used as a cathode, a platinum sheet as an anode, and a saturated calomel electrode as a reference electrode, and a platinum metal catalyst is deposited on the modified cathode gas diffusion layer by an electrodeposition method.

[0059] During electrodeposition, a constant potential of -0.65 to -1 V is applied to the cathode for 0.25 to 1 hour.

[0060] (3) The cathode gas diffusion layer treated in step (2) is placed in an oven for drying, and then an ionomer solution (mass percentage concentration of 1% to 3%) is coated or sprayed on the surface of the platinum catalyst, and dried to form an ordered cathode catalyst layer. The ionomer in this embodiment is polybenzimidazole (PBI), purchased from Shandong Zhengentropy Energy Technology Co., Ltd.

[0061] The Pt loading in the ordered cathode catalyst layer is 0.2 mg / cm 2 , PBI content is 10%.

[0062] (4) Tear off the insulating tape on the surface of the cathode gas diffusion layer and prepare the proton exchange membrane, anode catalyst layer, and anode gas diffusion layer.

[0063] The proton exchange membrane in this embodiment is a phosphoric acid-doped PBI membrane, and the preparation method is as follows:

[0064] A PBI membrane (thickness 10-40 μm) was taken and immersed in 85 wt.% phosphoric acid at 120° C. for a certain period of time until the phosphoric acid doping amount reached 200 wt.%.

[0065] The anode gas diffusion layer and the cathode gas diffusion layer in this embodiment are prepared in the same manner.

[0066] The anode catalyst layer in this embodiment is prepared by the following method:

[0067] A certain amount of Pt / C catalyst was weighed, moistened with a small amount of deionized water, and stirred to disperse uniformly. A certain amount of PTFE aqueous alcohol solution was then added and ultrasonically dispersed to obtain a catalyst slurry. The catalyst slurry had a Pt / C catalyst concentration of 20 wt%. The slurry was evenly applied to the surface of the microporous layer of the anode diffusion layer using ultrasonic spraying to form an anode catalyst layer on the surface of the anode diffusion layer.

[0068] The platinum loading in the above-mentioned anode catalyst layer is 0.2 mg / cm 2 .

[0069] The anode gas diffusion layer, anode catalyst layer, proton exchange membrane, and cathode gas diffusion layer are all prepared by ourselves. In other embodiments, the above components can also be purchased from the market.

[0070] like Figure 1As shown, the above-mentioned proton exchange membrane is taken, and the first side of the proton exchange membrane 3 is facing the ordered cathode catalyst layer 4 prepared in step (3), and the other side of the ordered cathode catalyst layer 4 is the cathode gas diffusion layer 5. Then, the above-prepared anode catalyst layer 2 and anode gas diffusion layer 1 are placed on the second side of the proton exchange membrane, and then placed in a hot press to perform hot pressing and molding of the membrane electrode, thereby obtaining the ordered high-temperature proton exchange membrane fuel cell membrane electrode of this embodiment.

[0071] Example 2

[0072] This embodiment provides a method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode. The difference between this preparation method and Example 1 is that the ionomer used in this embodiment is poly(pentafluorostyrene), which is purchased from Shandong Zhengentropy Energy Technology Co., Ltd.

[0073] Comparative Example 1

[0074] The difference between Comparative Example 1 and Example 1 is that the cathode catalyst layer in Comparative Example 1 has a disordered structure and the platinum loading is the same as that of the cathode catalyst layer in Example 1. The preparation method of the cathode catalyst layer in this Comparative Example 1 is:

[0075] A certain amount of Pt / C catalyst was weighed, moistened with a small amount of deionized water, and stirred to disperse uniformly. A certain amount of PTFE aqueous alcohol solution was then added to obtain a catalyst slurry. The cathode gas diffusion layer from Example 1 was sprayed with this catalyst slurry to form the cathode catalyst layer of this comparative example.

[0076] Comparative Example 2

[0077] The difference between Comparative Example 2 and Example 1 is that the cathode catalyst layer in Comparative Example 2 has a disordered structure and the platinum loading is the same as that of the cathode catalyst layer in Example 1. The preparation method of the cathode catalyst layer in this Comparative Example 1 is:

[0078] A certain amount of Pt / C catalyst was weighed, moistened with a small amount of deionized water, and stirred to disperse evenly. A certain amount of PVP aqueous alcohol solution was then added to obtain a catalyst slurry. The cathode gas diffusion layer from Example 1 was sprayed with this catalyst slurry to form the cathode catalyst layer of this comparative example.

[0079] Experimental results analysis

[0080] like Figure 2 As shown, the Pt catalyst obtained by electrodeposition basically covers the surface of the cathode gas diffusion layer, forming an ordered Pt array structure.

[0081] With reference to GB / T 20042.5-2009, the polarization curve test of the obtained high-temperature proton exchange membrane fuel cell membrane electrode was carried out. The specific operating conditions are: the single cell operating temperature is 170℃, the anode is fed with pure hydrogen, the cathode is fed with atmospheric pressure air, and the cathode / anode feeds are 3 / 1.5 times the stoichiometric ratio respectively. Figure 3 As shown, at 0.1A / cm 2 Under the conditions of 0.5A / cm2, the membrane electrode voltages of Example 1 of the present invention and Comparative Examples 1 and 2 were 0.625V, 0.57V, and 0.579V, respectively. 2 Under the conditions of 0.5 ℃ and 10 ℃, the membrane electrode voltages of Example 1 of the present invention and Comparative Examples 1 and 2 were measured to be 0.469 V, 0.338 V, and 0.313 V, respectively; the maximum power densities of the membrane electrodes of Example 1 of the present invention and Comparative Examples 1 and 2 were measured to be 0.352 W / cm 2 , 0.167W / cm 2 , 0.157W / cm 2 ; The results show that at the same platinum loading, the performance of the ordered high-temperature proton exchange membrane fuel cell membrane electrode prepared in Example 1 is greatly improved compared with the traditional disordered membrane electrode.

[0082] According to GB / T 20042.5-2009, the membrane electrode impedance of high-temperature proton exchange membrane fuel cells was tested. The specific operating conditions were: single cell operating temperature 170°C, pure hydrogen feed to the anode, atmospheric pressure air feed to the cathode, and cathode / anode feed stoichiometric ratio of 3 / 1.5 times @ 0.5A cm -2 , the discharge current density is 0.5A cm -2 .like Figure 4 As shown, it can be seen that compared with Comparative Examples 1 and 2, Example 1 has significantly reduced impedance in both the mid- and low-frequency regions of the impedance spectrum. The impedance in the mid-frequency region represents the charge transfer resistance of the oxygen reduction reaction, and the impedance in the low-frequency region represents the oxygen transmission resistance. The significant reduction in impedance in the mid- and low-frequency regions indicates that the ordered high-temperature proton exchange membrane fuel cell membrane electrode prepared in Example 1 can effectively shorten the transmission distance of oxygen, reduce the oxygen mass transfer resistance, and oxygen is transported in an orderly manner in the cathode catalyst layer.

[0083] In summary, the present invention provides an ordered high-temperature proton exchange membrane fuel cell membrane electrode, formed by an ordered cathode catalyst layer. This ordered cathode catalyst layer features a uniform distribution of Pt catalyst and ionomer, resolving the technical issues of difficult water and oxygen transport and low Pt catalyst utilization in existing disordered cathode catalyst layers.

[0084] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description is not intended to limit the present invention. After reading the above description, various modifications and substitutions of the present invention will become apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode, characterized in that: The following steps are involved: S1, preparing a modified cathode gas diffusion layer: providing a cathode gas diffusion layer, the cathode gas diffusion layer comprising: a microporous layer and a support layer, the surface of the microporous layer being used to form an ordered cathode catalyst layer; forming an insulating layer on the surface of the support layer, immersing the cathode gas diffusion layer in a mixed solution containing a binder and an aminosilane coupling agent, so that the aminosilane coupling agent is evenly bonded to the cathode gas diffusion layer, thereby obtaining a modified cathode gas diffusion layer; S2, preparing an ordered cathode catalyst layer: placing the modified cathode gas diffusion layer in an electrodeposition solution, the electrodeposition solution comprising: a platinum source precursor and perchloric acid; uniformly depositing a platinum catalyst on the aminosilane coupling agent by electrodeposition; then coating the surface of the platinum catalyst with an ionomer solution, and drying to form an ordered cathode catalyst layer; S3, preparation of ordered high temperature proton exchange membrane fuel cell membrane electrode: removing the insulating layer; A proton exchange membrane is provided, and the first surface of the proton exchange membrane is directed toward the ordered cathode catalyst layer. An anode catalyst layer and an anode gas diffusion layer are sequentially placed on the second surface of the proton exchange membrane, and hot pressing is performed to obtain the ordered high-temperature proton exchange membrane fuel cell membrane electrode.

2. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: In step S1, the insulating layer is formed by adhering an insulating tape on the surface of the supporting layer; In step S3, the insulating layer is removed by tearing off the insulating tape.

3. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The mass ratio of the binder to the aminosilane coupling agent is 1:(90-99).

4. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The binder is perfluorinated sulfonic acid resin.

5. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The platinum source precursor is chloroplatinic acid.

6. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The mass ratio of the platinum source precursor to perchloric acid is 1:(1-2).

7. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The ionomer is polybenzimidazole and / or poly(pentafluorostyrene).

8. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: In the ionomer solution, the mass percentage concentration of the ionomer is 1% to 3%.

9. The method for preparing an ordered high-temperature proton exchange membrane fuel cell membrane electrode according to claim 1, wherein: The support layer is carbon paper and / or carbon cloth.

10. An ordered high-temperature proton exchange membrane fuel cell membrane electrode, characterized in that: Prepared according to the method according to any one of claims 1 to 9.

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