A membrane electrode frame packaging structure

Abstract

The present invention provides a fuel cell membrane electrode with a frame packaging structure, comprising a proton exchange membrane; a hollow frame 1 laminated on one side of the proton exchange membrane; a gas diffusion layer 1 laminated on one side of the hollow frame 1; a hollow frame 2 laminated on the other side of the proton exchange membrane or on the other side of the hollow frame 1; and a gas diffusion layer 2 laminated on the other side of the proton exchange membrane. The fuel cell membrane electrode with a frame packaging structure provided by the present invention can effectively reduce shear forces on the proton exchange membrane, improve the lifespan of the proton exchange membrane, and is also suitable for mass production.

Description

Technical Field

[0001] The present invention belongs to the technical field of proton exchange membrane fuel cell preparation, and relates to a fuel cell membrane electrode with a frame packaging structure, and in particular to a membrane electrode frame packaging structure. Background Art

[0002] Proton exchange membrane fuel cells (PEMFCs) boast low pollution, cleanliness, excellent low-temperature adaptability, and high energy conversion efficiency. Hydrogen fuel cells have become a key development direction in the new energy sector. As the core component of PEMFC power generation, the lifespan, cost, and large-scale production efficiency of the membrane electrode (MEA) are key constraints to the industry's development. Therefore, developing an edge-sealing structure suitable for mass production and capable of effectively extending the lifespan of the MEA is a key development direction for the industry.

[0003] like Figure 1 , Figure 1 This is a diagram of a common membrane electrode frame seal structure. The most common membrane electrode seal structure on the market is a double-layer symmetrical frame seal structure. The gas diffusion layer is slightly smaller than the hollow space in the frame. Designers hope to ensure good contact between the gas diffusion layer and the catalyst layer, while also providing some resistance to the movement of the gas diffusion layer through the edge of the frame. However, this design may pose a risk: the force applied to the edge of the gas diffusion layer can cause mechanical shearing on the proton exchange membrane, potentially affecting the life of the proton exchange membrane.

[0004] like Figure 2 , Figure 2 This is a schematic diagram of a membrane electrode structure using resin or rubber seals instead of frame seals, as described in patent CN2588552Y. This technical solution provides a membrane electrode sealing structure for a proton exchange membrane fuel cell, using resin or rubber instead of a frame sealing structure, with the resin or rubber being made into a liquid or molten state. However, this method may require high-temperature dissolution of the sealing material, such as melting silicone at around 170°C. This integration with the proton exchange membrane carries the risk of complex processing, damage to the proton exchange membrane, and low yield.

[0005] like Figure 3 , Figure 3This is a schematic diagram of a membrane electrode frame seal with a frame step constructed in patent CN 112490465A. This technical solution provides a membrane electrode seal structure for a proton exchange membrane fuel cell. This structure creates a depression by surface plasma etching or laser etching a single-layer frame. This depression serves as a sealing step for the proton exchange membrane, and glue is then applied to the step to secure the frame and the proton exchange membrane. While this method can reduce the amount of frame used, creating a shaped depression of tens to tens of microns on a thin sheet of tens to hundreds of microns can be inconvenient to manufacture and process, and the production process is complex, posing significant challenges and risks in terms of cost and efficiency.

[0006] Therefore, how to find a membrane electrode frame sealing structure that can effectively reduce the shear force of the proton exchange membrane, increase the life of the proton exchange membrane, and can be mass-produced is very necessary for the industry and is also one of the problems that many front-line researchers urgently need to solve. Summary of the Invention

[0007] In view of this, the technical problem to be solved by the present invention is to provide a fuel cell membrane electrode with a frame packaging structure, specifically a membrane electrode frame packaging structure. The membrane electrode frame packaging structure provided by the present invention can effectively reduce the shear force of the proton exchange membrane, improve the life of the proton exchange membrane, and can also be mass-produced.

[0008] The present invention provides a fuel cell membrane electrode with a frame packaging structure, comprising:

[0009] Proton exchange membrane;

[0010] A hollow frame 1 composited on one side of the proton exchange membrane;

[0011] A gas diffusion layer 1 is composited on one side of the hollow frame 1;

[0012] A hollow frame 2 compounded on the other side of the proton exchange membrane or compounded on the other side of the hollow frame 1;

[0013] A gas diffusion layer 2 is composited on the other side of the proton exchange membrane.

[0014] Preferably, the proton exchange membrane comprises a proton exchange membrane with a catalyst layer on both sides;

[0015] The planar size of the proton exchange membrane is larger than the hollow planar size of the hollow frame 1;

[0016] The edge of the proton exchange membrane is 1 to 7 mm longer than the hollow edge of the hollow frame 1 .

[0017] Preferably, the hollow plane size of the hollow frame 2 is larger than the hollow plane size of the hollow frame 1;

[0018] The plane size of the gas diffusion layer 1 is larger than the hollow plane size of the hollow frame 1 .

[0019] Preferably, the surface of the gas diffusion layer 2 composited with the proton exchange membrane is flush with the outer surface of the hollow frame 2 or the gas diffusion layer 2 is embedded in the frame of the hollow frame 2;

[0020] The plane size of the gas diffusion layer 2 is smaller than or equal to the plane size of the hollow part of the hollow frame 2 .

[0021] Preferably, the gas diffusion layer 1 and the gas diffusion layer 2 have an asymmetric structure;

[0022] The hollow frame 1 and the hollow frame 2 have an asymmetric structure;

[0023] The asymmetric structure includes an asymmetric structure in thickness and / or an asymmetric structure in plane size;

[0024] The frame packaging structure is a sealed frame packaging structure.

[0025] Preferably, the hollow frame 1 and the gas diffusion layer 1 are bonded and compounded via an adhesive layer 1;

[0026] The gas diffusion layer 2 and the proton exchange membrane are bonded and compounded via an adhesive layer 2 .

[0027] Preferably, the thickness of the hollow frame 1 and the hollow frame 2 are independently selected from 0.022 to 0.27 mm;

[0028] The thickness of the adhesive layer 1 and the adhesive layer 2 are independently selected from 0.005 to 0.1 mm;

[0029] The bonding and lamination is edge bonding and lamination.

[0030] Preferably, the adhesive layer 1 and the adhesive layer 2 are each independently selected from an adhesive layer with a substrate or an adhesive layer without a substrate;

[0031] The substrate comprises one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer;

[0032] The glue includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin and silicone.

[0033] Preferably, when the edge of the proton exchange membrane exceeds the edge of the gas diffusion layer 2, the outer edge of the adhesive layer 2 exceeds the outer edge of the gas diffusion layer 2;

[0034] When the edge of the proton exchange membrane does not exceed the edge of the gas diffusion layer 2 , the outer edge of the adhesive layer 2 may or may not exceed the outer edge of the gas diffusion layer 2 .

[0035] Preferably, the hollow frame 1 and the hollow frame 2 are bonded together by a frame adhesive layer;

[0036] The materials of the hollow frame 1 and the hollow frame 2 are independently selected from one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer;

[0037] The material of the frame adhesive layer includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin and epoxy resin.

[0038] The present invention provides a fuel cell membrane electrode with a frame packaging structure, comprising a proton exchange membrane; a hollow frame 1 laminated on one side of the proton exchange membrane; a gas diffusion layer 1 laminated on one side of the hollow frame 1; a hollow frame 2 laminated on the other side of the proton exchange membrane or on the other side of the hollow frame 1; and a gas diffusion layer 2 laminated on the other side of the proton exchange membrane. Compared with existing technologies, the fuel cell membrane electrode with a frame packaging structure provided by the present invention can effectively reduce shear forces on the proton exchange membrane, improve the lifespan of the proton exchange membrane, and is also suitable for mass production.

[0039] Experimental results show that after the durability test, the fuel cell membrane electrode with a frame packaging structure provided by the present invention has a leakage rate caused by mechanical shearing at the edge of the proton membrane reduced by more than 95% compared with the number without mechanical shear protection. It can basically effectively protect the edge shearing of the proton exchange membrane. At the same time, the use of this design structure can achieve a production efficiency of 10 pieces / min in the roll-to-roll production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the common membrane electrode frame sealing structure;

[0041] Figure 2 This is a schematic diagram of the membrane electrode structure using resin or rubber seal instead of frame seal in patent CN2588552Y;

[0042] Figure 3 Schematic diagram of the membrane electrode frame seal with frame steps constructed in patent CN 112490465A;

[0043] Figure 4 A schematic diagram of the membrane electrode frame sealing structure provided by the present invention;

[0044] Figure 5 A schematic diagram of a frame sealing structure provided in Example 2 of the present invention;

[0045] Figure 6 This is a schematic diagram of the frame sealing structure provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0046] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention rather than limiting the patent claims of the present invention.

[0047] All raw materials of the present invention are not particularly limited in their sources and can be purchased from the market or prepared according to conventional methods well known to those skilled in the art.

[0048] There is no particular limitation on the purity of all raw materials in the present invention. The present invention preferably adopts analytically pure materials or materials with conventional purity requirements in the field of proton exchange membrane fuel cell preparation.

[0049] All raw materials of the present invention, their sources and abbreviations are conventional sources and abbreviations in the field, and are clear and unambiguous in the field of their relevant uses. Those skilled in the art can purchase them from commercial sources or prepare them by conventional methods based on the abbreviations and corresponding uses.

[0050] The present invention provides a fuel cell membrane electrode with a frame packaging structure, comprising:

[0051] Proton exchange membrane;

[0052] A hollow frame 1 composited on one side of the proton exchange membrane;

[0053] A gas diffusion layer 1 is composited on one side of the hollow frame 1;

[0054] A hollow frame 2 compounded on the other side of the proton exchange membrane or compounded on the other side of the hollow frame 1;

[0055] A gas diffusion layer 2 is composited on the other side of the proton exchange membrane.

[0056] In the present invention, the proton exchange membrane is a proton exchange membrane with catalyst layers on both sides.

[0057] In the present invention, the planar size of the proton exchange membrane is larger than the hollow planar size of the hollow frame 1 .

[0058] In the present invention, the edge of the proton exchange membrane is preferably 1 to 7 mm longer than the hollow edge of the hollow frame 1 , more preferably 2 to 6 mm longer, and even more preferably 3 to 5 mm longer.

[0059] In the present invention, the hollow plane size of the hollow frame 2 is preferably larger than the hollow plane size of the hollow frame 1 .

[0060] In the present invention, the plane size of the gas diffusion layer 1 is preferably larger than the hollow plane size of the hollow frame 1 .

[0061] In the present invention, the surface of the gas diffusion layer 2 composited with the proton exchange membrane is preferably flush with the outer surface of the hollow frame 2 or the gas diffusion layer 2 is embedded in the frame of the hollow frame 2 .

[0062] In the present invention, the planar size of the gas diffusion layer 2 is preferably smaller than or equal to the planar size of the hollow portion of the hollow frame 2 .

[0063] In the present invention, the gas diffusion layer 1 and the gas diffusion layer 2 have an asymmetric structure.

[0064] In the present invention, the hollow frame 1 and the hollow frame 2 have an asymmetric structure.

[0065] In the present invention, the asymmetric structure preferably includes an asymmetric structure in thickness and / or an asymmetric structure in plane size, and more preferably an asymmetric structure in thickness or an asymmetric structure in plane size.

[0066] In the present invention, the frame packaging structure is preferably a sealed frame packaging structure.

[0067] In the present invention, the hollow frame 1 is preferably bonded and compounded with the gas diffusion layer 1 via an adhesive layer 1 .

[0068] In the present invention, the gas diffusion layer 2 is preferably bonded and compounded with the proton exchange membrane via an adhesive layer 2 .

[0069] In the present invention, the thickness of the hollow frame 1 and the hollow frame 2 are independently preferably selected from 0.022 to 0.27 mm, more preferably 0.036 to 0.13 mm, and even more preferably 0.04 to 0.09 mm.

[0070] In the present invention, the thickness of the adhesive layer 1 and the adhesive layer 2 are each independently preferably selected from 0.005 to 0.1 mm, more preferably 0.036 to 0.013 mm, and even more preferably 0.04 to 0.09 mm.

[0071] In the present invention, the bonding and lamination is preferably edge bonding and lamination.

[0072] In the present invention, the adhesive layer 1 and the adhesive layer 2 are preferably independently selected from an adhesive layer with a substrate or an adhesive layer without a substrate.

[0073] In the present invention, the substrate preferably includes one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer, more preferably polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate or ethylene-vinyl alcohol copolymer.

[0074] In the present invention, the glue preferably includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin and silicone, more preferably ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin or silicone.

[0075] In the present invention, when the edge of the proton exchange membrane exceeds the edge of the gas diffusion layer 2 , the outer edge of the adhesive layer 2 preferably exceeds the outer edge of the gas diffusion layer 2 .

[0076] In the present invention, when the edge of the proton exchange membrane does not extend beyond the edge of the gas diffusion layer 2, the outer edge of the adhesive layer 2 may or may not extend beyond the outer edge of the gas diffusion layer 2. The purpose of the size of the outer edge of the adhesive layer 2 is to prevent shearing of the proton exchange membrane by the edge of the gas diffusion layer 2. When the edge of the proton exchange membrane does not extend beyond the edge of the gas diffusion layer 2, there is no shear force at the edge, and whether the outer edge of the adhesive layer 2 extends beyond the outer edge of the gas diffusion layer 2 is irrelevant.

[0077] In the present invention, the hollow frame 1 is preferably bonded and compounded with the hollow frame 2 via a frame adhesive layer.

[0078] In the present invention, the materials of the hollow frame 1 and the hollow frame 2 are preferably independently selected from one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer, and more preferably independently selected from polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate or ethylene-vinyl alcohol copolymer.

[0079] In the present invention, the material of the frame adhesive layer preferably includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin and epoxy resin, and more preferably ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin or epoxy resin.

[0080] The present invention is to complete and refine the overall frame structure design, better reduce the shear force of the proton exchange membrane, increase the life of the proton exchange membrane, and ensure normal batch production. The fuel cell membrane electrode with the frame packaging structure is preferably structured as follows:

[0081] The sealed frame structure of the membrane electrode of the proton exchange membrane fuel cell consists of a proton exchange membrane containing two catalyst layers, a gas diffusion layer 1, a gas diffusion layer 2, a frame 1 (hollow frame 1), a frame 2 (hollow frame 2), an adhesive 1, and an adhesive 2.

[0082] The edge of the proton exchange membrane is at least 3 mm larger than the hollow edge of the frame. Frame 1 and frame 2 are bonded together by a frame adhesive layer. The proton exchange membrane containing two catalyst layers is bonded together by the adhesive layer of frame 1. Gas diffusion layer 1 is bonded to frame 1 by adhesive 1, and gas diffusion layer 2 is bonded to the proton exchange membrane by adhesive 2.

[0083] Specifically, the edge of the proton exchange membrane containing two catalyst layers is bonded to the adhesive layer of the frame 1 , and the edges of the frame 1 and the frame 2 are bonded via the frame adhesive layer.

[0084] Specifically, the gas diffusion layer 1 is bonded to the frame 1 through an adhesive 1 , and the gas diffusion layer 2 is bonded to the proton exchange membrane through an adhesive 2 .

[0085] Specifically, the two sides of the gas diffusion layer are asymmetric structures. Through the design of the asymmetric structure, the edge shear force can be effectively reduced and the life of the proton exchange membrane can be increased.

[0086] Specifically, the frames on both sides are asymmetric structures. Through the design of the asymmetric structure, the edge shear force can be effectively reduced and the life of the proton exchange membrane can be increased.

[0087] Specifically, the thickness of adhesive 1 and adhesive 2 is between 0.005 and 0.1 mm. If the edge of the proton exchange membrane exceeds the edge of the gas diffusion layer 2, the edge of adhesive 2 must extend beyond the edge of the gas diffusion layer 2. Adhesive 2 protects the cut edge of the gas diffusion layer 2, effectively reducing edge shear forces.

[0088] Specifically, adhesive 1 and adhesive 2 are to protect the proton exchange membrane and reduce shear force, and can be adhesive layers without a substrate or adhesive layers with a substrate.

[0089] The base material can be one of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate, ethylene-vinyl alcohol copolymer, etc.; the adhesive layer is one or more mixtures of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin, silicone, etc., and the type of adhesive can be hot melt adhesive, pressure sensitive adhesive or UV curing adhesive.

[0090] Specifically, the thickness of adhesive 1 and adhesive 2 is 0.005-0.1 mm. If the edge of the proton exchange membrane does not exceed the edge of the gas diffusion layer 2, the edge of the adhesive 2 may not exceed the edge of the gas diffusion layer 2, and the cut edge of the gas diffusion layer 2 can be supported by the frame.

[0091] Specifically, the base materials of the frame 1 and the frame 2 are respectively polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate, ethylene-vinyl alcohol copolymer, and the like.

[0092] Specifically, the adhesive layer materials of frame 1 and frame 2 are respectively one or more mixtures of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin, etc., which can be thermoplastic adhesive layer, thermosetting adhesive layer, or pressure-sensitive adhesive layer.

[0093] Specifically, the total thickness of the frame 1 is between 0.022 mm and 0.27 mm, and the thickness of the frame 2 is between 0.022 mm and 0.27 mm.

[0094] See also Figure 4 , Figure 4 This is a schematic diagram of the membrane electrode frame sealing structure provided by the present invention.

[0095] The present invention provides a membrane electrode frame packaging structure. The fuel cell membrane electrode with a frame packaging structure provided by the present invention can effectively reduce the shear force of the proton exchange membrane, increase the life of the proton exchange membrane, and can be mass-produced.

[0096] Experimental results show that after the durability test, the fuel cell membrane electrode with a frame packaging structure provided by the present invention has a leakage rate caused by mechanical shearing at the edge of the proton membrane reduced by more than 95% compared with the number without mechanical shear protection. It can basically effectively protect the edge shearing of the proton exchange membrane. At the same time, the use of this design structure can achieve a production efficiency of 10 pieces / min in the roll-to-roll production process.

[0097] In order to further illustrate the present invention, a fuel cell membrane electrode with a frame packaging structure provided by the present invention is described in detail below in combination with the embodiments. However, it should be understood that these embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are given only to further illustrate the features and advantages of the present invention, rather than to limit the claims of the present invention. The scope of protection of the present invention is not limited to the following embodiments.

[0098] Example 1

[0099] like Figure 4 As shown, the implementation method of membrane electrode sealing includes the following steps:

[0100] 1. First, cut and shape the raw material of frame 1 with a thickness of 0.022mm-0.27mm; cut and shape the raw material of frame 2 with a thickness of 0.022mm-0.27mm; apply the catalyst on both sides to the proton exchange membrane respectively; cut and shape the gas diffusion layer 1 and gas diffusion layer 2; wherein the frame 1 and frame 2, gas diffusion layer 1 and gas diffusion layer 2 are all asymmetric structures;

[0101] 2. Lay the proton exchange membrane coated with the catalytic layer on the frames 1 and 2, with the edge of the proton exchange membrane extending at least 3 mm beyond the inner hollow edge of frame 1;

[0102] 3. The gas diffusion layer 1 and the gas diffusion layer 2 are respectively adhered to the frame 1 and the designated positions of the proton exchange membrane using adhesives 1 and adhesives 2 with a thickness of 0.005 to 0.1 mm to complete the bonding of the gas diffusion layers.

[0103] The above processing must be carried out in a sufficiently clean environment to form the membrane electrode frame sealing structure designed in the present invention.

[0104] Example 2

[0105] like Figure 5 shown. Figure 5 This is a schematic diagram of the frame sealing structure provided in Example 2 of the present invention.

[0106] The width of the proton exchange membrane can be as wide as the edge of the frame. This solution has low requirements for operational positioning accuracy, but the width of the proton exchange membrane is wider than the gas diffusion layer 2. The edge of the adhesive 2 must wrap the frame of the gas diffusion layer 2 to further protect the exposed carbon fiber. This solution is an extension of the present invention.

[0107] Example 3

[0108] like Figure 6 shown. Figure 6 This is a schematic diagram of the frame sealing structure provided in Example 3 of the present invention.

[0109] The gas diffusion layer 1 is bonded to the outside of the frame 1. Within the active area, a gap exists between the edge of the gas diffusion layer and the catalyst layer of the proton exchange membrane. The impact of this edge contact can be reduced by reducing the thickness of the frame 1. To ensure support strength, the thickness of the frame 2 is increased. This design, based on the thickness of the carbon material, is also an extension of the present invention.

[0110] The above is a detailed introduction to a membrane electrode frame packaging structure provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas, including the best mode, and also enables any technician in this field to practice the present invention, including the manufacture and use of any device or system, and the implementation of any combined method. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The scope of patent protection of the present invention is defined by the claims and may include other embodiments that can be thought of by those skilled in the art. If these other embodiments have structural elements that are not different from the literal wording of the claims, or if they include equivalent structural elements that are not substantially different from the literal wording of the claims, then these other embodiments should also be included in the scope of the claims.

Claims

1. A fuel cell membrane electrode with a frame packaging structure, characterized in that: include: Proton exchange membrane; A first hollow frame composited on one side of the proton exchange membrane; a first gas diffusion layer composited on one side of the first hollow frame; A second hollow frame compounded on the other side of the proton exchange membrane or compounded on the other side of the first hollow frame; a second gas diffusion layer composited on the other side of the proton exchange membrane; The proton exchange membrane is a proton exchange membrane with a catalyst layer on both sides; The first gas diffusion layer and the second gas diffusion layer have an asymmetric structure; The first hollow frame and the second hollow frame have an asymmetric structure; The asymmetric structure includes an asymmetric structure in plane size; The planar size of the proton exchange membrane is larger than the hollow planar size of the first hollow frame; The hollow plane size of the second hollow frame is larger than the hollow plane size of the first hollow frame; The plane size of the first gas diffusion layer is larger than the hollow plane size of the first hollow frame; The first hollow frame and the first gas diffusion layer are bonded and compounded by a first adhesive layer; The second gas diffusion layer and the proton exchange membrane are bonded and compounded via a second adhesive layer.

2. The fuel cell membrane electrode according to claim 1, characterized in that The edge of the proton exchange membrane is 1 to 7 mm longer than the hollow edge of the first hollow frame.

3. The fuel cell membrane electrode according to claim 1, characterized in that The surface of the second gas diffusion layer combined with the proton exchange membrane is flush with the outer surface of the second hollow frame, or the second gas diffusion layer is embedded in the frame of the second hollow frame.

4. The fuel cell membrane electrode according to claim 1, characterized in that The plane size of the second gas diffusion layer is smaller than or equal to the plane size of the hollow portion of the second hollow frame.

5. The fuel cell membrane electrode according to claim 1, characterized in that The asymmetric structure includes an asymmetric structure in thickness; The frame packaging structure is a sealed frame packaging structure.

6. The fuel cell membrane electrode according to claim 1, characterized in that The thickness of the first hollow frame and the second hollow frame are independently selected from 0.022 to 0.27 mm.

7. The fuel cell membrane electrode according to claim 1, characterized in that The thickness of the first adhesive layer and the second adhesive layer are each independently selected from 0.005 to 0.1 mm; The bonding and lamination is edge bonding and lamination.

8. The fuel cell membrane electrode according to claim 1, characterized in that The first adhesive layer and the second adhesive layer are each independently selected from an adhesive layer with a substrate or an adhesive layer without a substrate; The substrate comprises one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer; The glue includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin, epoxy resin and silicone.

9. The fuel cell membrane electrode according to claim 1, characterized in that When the edge of the proton exchange membrane exceeds the edge of the second gas diffusion layer, the outer edge of the second adhesive layer exceeds the outer edge of the second gas diffusion layer; When the edge of the proton exchange membrane does not exceed the edge of the second gas diffusion layer, the outer edge of the second adhesive layer may or may not exceed the outer edge of the second gas diffusion layer.

10. The fuel cell membrane electrode according to claim 1, characterized in that The first hollow frame and the second hollow frame are bonded together by a frame adhesive layer; The materials of the first hollow frame and the second hollow frame are independently selected from one or more of polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyimide, polypropylene, polyethylene, polystyrene, polyacrylonitrile, polycarbonate and ethylene-vinyl alcohol copolymer; The material of the frame adhesive layer includes one or more of ethylene-vinyl acetate copolymer, polyester, polyurethane, acrylate, phenolic resin and epoxy resin.

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