CN220189698U - Fuel cell unit cell and fuel cell - Google Patents

Fuel cell unit cell and fuel cell Download PDF

Info

Publication number
CN220189698U
CN220189698U CN202321761964.9U CN202321761964U CN220189698U CN 220189698 U CN220189698 U CN 220189698U CN 202321761964 U CN202321761964 U CN 202321761964U CN 220189698 U CN220189698 U CN 220189698U
Authority
CN
China
Prior art keywords
fuel cell
gas diffusion
diffusion layer
layer
catalyst layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321761964.9U
Other languages
Chinese (zh)
Inventor
王英
漆海龙
赵小震
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Automotive Innovation Co Ltd
Original Assignee
China Automotive Innovation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Automotive Innovation Co Ltd filed Critical China Automotive Innovation Co Ltd
Priority to CN202321761964.9U priority Critical patent/CN220189698U/en
Application granted granted Critical
Publication of CN220189698U publication Critical patent/CN220189698U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Fuel Cell (AREA)

Abstract

The utility model relates to the technical field of fuel cells, and discloses a single fuel cell and a fuel cell, wherein the circumferential edge of a second gas diffusion layer extends out of a second catalyst layer to prevent the rough circumferential edge of the second gas diffusion layer, such as a fuzzing part of carbon fiber, from penetrating into the second catalyst layer to damage the second catalyst layer; the second gas diffusion layer and the proton exchange membrane are stuck and fixed on the support membrane, so that dimensional errors caused by relative displacement among the second gas diffusion layer, the second catalyst layer and the support membrane during high-speed production are prevented; the first gas diffusion layer is limited by the support film, the first catalyst layer and the support film are not required to be stuck and fixed, and the step surface is not required to be machined on the first catalyst layer, so that the machining cost is reduced, the preparation procedure of the single fuel cell is simplified, and the preparation efficiency of the single fuel cell is improved. The single fuel cell provided by the utility model has higher mechanical durability and longer service life.

Description

Fuel cell unit cell and fuel cell
Technical Field
The present utility model relates to the field of fuel cells, and in particular, to a single fuel cell and a fuel cell.
Background
The membrane electrode of the single cell of the fuel cell includes a CCM (catalyst coated membrane), an upper gas diffusion layer and a lower gas diffusion layer, which are respectively disposed on opposite sides of the CCM.
The membrane electrode further comprises a support frame, the support frame is arranged at the circumferential edge of the CCM, and the support frame and the CCM are both fixedly bonded on the upper gas diffusion layer. Specifically, the peripheral edge of the proton exchange membrane extends out of the upper catalyst layer, so that the peripheral edge of the proton exchange membrane adjacent to the upper catalyst layer is exposed, and the exposed part is adhered and fixed on the upper gas diffusion layer.
In order to improve the bonding strength, one side of the upper gas diffusion layer facing the CCM is provided with a step surface, one side of the step surface, which is close to the center of the CCM, is fixedly attached to the exposed proton exchange membrane through hot melt adhesive, the edge part of the step surface is fixedly attached to the supporting frame through hot melt adhesive, the lower gas diffusion layer is arranged at intervals with the supporting frame, and the lower body diffusion layer is clamped between the CCM and the lower membrane.
The following defects exist by adopting the technical scheme:
(1) The upper gas diffusion layer needs to be designed in a step mode, and therefore machining cost is increased;
(2) Because the interval is arranged between the lower gas diffusion layer and the supporting frame, and the lower body diffusion layer is only clamped between the CCM and the lower diaphragm, the lower gas diffusion layer and the catalyst coating film are easy to move relatively in the high-speed production process, so that the product quality is affected.
Disclosure of Invention
The utility model aims to provide a single fuel cell and a fuel cell, which can improve the quality and the service life of the single fuel cell and reduce the processing cost.
To achieve the object, in one aspect, the present utility model provides a single fuel cell, including a membrane electrode assembly including a first gas diffusion layer, a first catalyst layer, a proton exchange membrane, a second catalyst layer, and a second gas diffusion layer, which are sequentially stacked; the peripheral edge of the proton exchange membrane extends out of the first catalyst layer, and the peripheral edge of the second gas diffusion layer extends out of the second catalyst layer; the fuel cell unit cell further includes:
a support frame provided on an outer periphery of the second gas diffusion layer;
and the support film is arranged on the periphery of the first gas diffusion layer and is fixed on the support frame, and an adhesive layer is formed between the part of the second gas diffusion layer extending out of the second catalyst layer, the part of the proton exchange film extending out of the first catalyst layer and the support film.
As a preferable embodiment of the fuel cell unit cell, the adhesive layer is formed on both the outer peripheral wall of the proton exchange membrane and the outer peripheral wall of the second catalyst layer.
As a preferable mode of the fuel cell unit, an end of the first gas diffusion layer opposite to the first catalyst layer extends out of the support film in a thickness direction of the fuel cell unit.
As a preferable embodiment of the fuel cell unit cell, the support film is provided at intervals on the outer periphery of the first catalyst layer.
As a preferable embodiment of the fuel cell unit cell, the circumferential edge of the first gas diffusion layer protrudes from the first catalyst layer.
As a preferable embodiment of the fuel cell unit cell, the adhesive layer is formed on the outer peripheral wall of the first catalyst layer.
As a preferable mode of the above-described fuel cell unit cell, the support film and the first gas diffusion layer have a first spacing therebetween in a direction perpendicular to a thickness direction of the fuel cell unit cell.
As a preferable embodiment of the fuel cell unit cell, the adhesive layer is formed on the outer peripheral wall of the first gas diffusion layer.
As a preferable technical scheme of the single cell of the fuel cell, the bonding layer is a UV glue layer.
On the other hand, the utility model also provides a fuel cell which comprises the fuel cell single cell according to any one of the schemes.
The utility model has the beneficial effects that: according to the fuel cell unit cell and the fuel cell provided by the utility model, the circumferential edge of the second gas diffusion layer extends out of the second catalyst layer, so that the roughened circumferential edge of the second gas diffusion layer, such as a fuzzing part of carbon fiber, is prevented from penetrating into the second catalyst layer to damage the second catalyst layer; simultaneously, the support film is arranged on the periphery of the first gas diffusion layer and is fixed on the support frame, and the support film is simultaneously adhered to the part of the second gas diffusion layer extending out of the second catalyst layer and the part of the proton exchange film extending out of the first catalyst layer through the adhesion layer, so that the second gas diffusion layer and the proton exchange film are adhered and fixed on the support film, and the relative displacement among the second gas diffusion layer, the second catalyst layer and the support film during high-speed production can be prevented from generating dimensional errors; and the first catalyst layer and the supporting film do not need to be adhered, and the step surface does not need to be processed on the first catalyst layer, so that the processing cost is reduced, the preparation procedure of the single fuel cell is simplified, and the preparation efficiency of the single fuel cell is improved.
The support film is arranged on the periphery of the first gas diffusion layer and is fixed on the support frame, when the laminated fuel cell unit cell prepares the fuel cell, the fuel cell unit cell can bear acting force along the thickness direction of the laminated fuel cell unit cell, and the support film is used for limiting the first gas diffusion layer, so that the relative position among the first gas diffusion layer, the first catalyst layer and the support film can be prevented from changing; and the first gas diffusion layer is limited by the support film, so that the first gas diffusion layer and the first catalyst layer are prevented from relative displacement during high-speed production to generate dimensional errors.
The single fuel cell provided by the utility model has higher mechanical durability and longer service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
Fig. 1 is a cross-sectional view of a first fuel cell unit cell provided by an embodiment of the present utility model;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 4 is a cross-sectional view of a second fuel cell unit cell according to an embodiment of the present utility model
Fig. 5 is a cross-sectional view of a third fuel cell unit cell provided by an embodiment of the present utility model;
fig. 6 is a cross-sectional view of a fourth fuel cell unit cell provided by an embodiment of the present utility model;
fig. 7 is a cross-sectional view of a fifth fuel cell unit cell provided by an embodiment of the present utility model;
fig. 8 is a diagram illustrating a first process for manufacturing a single fuel cell according to an embodiment of the present utility model;
fig. 9 is a second process diagram of a first fuel cell unit cell according to an embodiment of the present utility model;
fig. 10 is a third process diagram of a first fuel cell unit cell according to an embodiment of the present utility model;
fig. 11 is a diagram showing a processing procedure of a first fuel cell unit cell according to an embodiment of the present utility model;
fig. 12 is a fifth process diagram of a first fuel cell unit cell according to an embodiment of the present utility model;
fig. 13 is a sixth process diagram of a first fuel cell unit cell according to an embodiment of the present utility model.
In the figure:
1. a first diaphragm; 2. a support frame; 3. a second diaphragm; 4. a catalyst coating film; 41. a first catalyst layer; 411. a fourth side; 412. a fifth side; 42. a proton exchange membrane; 43. a second catalyst layer; 5. a first gas diffusion layer; 51. a first side; 6. a second gas diffusion layer; 7. a support film; 71. hollow out; 72. a second side; 73. a third side; 8. an adhesive layer; 9. and (5) a vacuum plate.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 3, the present embodiment provides a single fuel cell comprising a catalyst coating film 4, a first gas diffusion layer 5, a second gas diffusion layer 6, a support frame 2 and a support film 7, wherein the catalyst coating film 4 comprises a proton exchange film 42 and a first catalyst layer 41 and a second catalyst layer 43 respectively laminated on both sides of the proton exchange film 42, and the peripheral edge of the proton exchange film 42 extends out of the first catalyst layer 41; the first gas diffusion layer 5 is laminated on the side of the first catalyst layer 41 facing away from the catalyst coating film 4; the second gas diffusion layer 6 is laminated on the side of the second catalyst layer 43 facing away from the catalyst coating film 4, and the peripheral edge of the second gas diffusion layer 6 protrudes from the second catalyst layer 43; the support frames 2 are provided at intervals on the outer periphery of the second gas diffusion layer 6; the support film 7 is disposed on the outer periphery of the first gas diffusion layer 5 and fixed to the support frame 2, and an adhesive layer 8 is formed between the portion of the second gas diffusion layer 6 extending out of the second catalyst layer 43, the portion of the proton exchange membrane 42 extending out of the first catalyst layer 41, and the support film 7.
Specifically, the support film 7 is provided with a hollow 71 exposing the first gas diffusion layer 5, and the length of the second gas diffusion layer 6 is smaller than the maximum length of the support film 7 and larger than the length of the hollow 71 on the support film 7 along the same direction perpendicular to the thickness direction of the fuel cell unit cell, so that the part of the second gas diffusion layer 6 extending out of the second catalyst layer 43 can face the support film 7, and an adhesive layer 8 can be formed between the part of the second gas diffusion layer 6 extending out of the second catalyst layer 43 and the support film 7.
Along the same direction perpendicular to the thickness direction of the single cell of the fuel cell, the length of the proton exchange membrane 42 is longer than the length of the hollowed-out portion 71 on the support membrane 7, so that the part of the proton exchange membrane 42 extending out of the first catalyst layer 41 can be opposite to the support membrane 7, and an adhesive layer 8 can be formed between the part of the proton exchange membrane 42 extending out of the first catalyst layer 41 and the support membrane 7.
In the above-described fuel cell unit cell, since the peripheral edge of the second gas diffusion layer 6 protrudes beyond the second catalyst layer 43, it is possible to prevent the roughened peripheral edge of the second gas diffusion layer 6, such as the fluffed portion of the carbon fiber, from penetrating into the second catalyst layer 43 to damage the second catalyst layer 43; simultaneously, the support film 7 is arranged on the periphery of the first gas diffusion layer 5 and fixed on the support frame 2, and the support film 7 is simultaneously adhered to the part of the second gas diffusion layer 6 extending out of the second catalyst layer 43 and the part of the proton exchange film 42 extending out of the first catalyst layer 41 through the adhesive layer, so that the second gas diffusion layer 6 and the catalyst coating film 4 are adhered and fixed on the support film 7, and the relative displacement among the second gas diffusion layer 6, the catalyst coating film 4 and the support film 7 during high-speed production can be prevented from generating dimensional errors; and the first catalyst layer 41 and the support film 7 are not required to be adhered, and the step surface is not required to be processed on the first catalyst layer 41, so that the processing cost is reduced, the preparation process of the single fuel cell is simplified, and the preparation efficiency of the single fuel cell is improved.
Since the support film 7 is disposed on the outer periphery of the first gas diffusion layer 5 and is fixed on the support frame 2, when the fuel cell is prepared by stacking the fuel cell units, the fuel cell units can receive the acting force along the thickness direction, and the support film 7 limits the first gas diffusion layer 5, so that the relative position among the catalyst coating film 4, the first gas diffusion layer 5 and the support film 7 can be prevented from being changed; and the first gas diffusion layer 5 is limited by the support film 7, so that the first gas diffusion layer 5 and the catalyst coating film 4 are prevented from relative displacement during high-speed production to generate dimensional errors.
The fuel cell unit provided by the embodiment has higher mechanical durability and longer service life.
Alternatively, the outer peripheral wall of the proton exchange membrane 42 and the outer peripheral wall of the second catalyst layer 43 are both formed with the adhesive layer 8. Specifically, the peripheral walls of the proton exchange membrane 42 and the second catalyst layer 43 are flush, so that the dope can directly form the adhesive layer 8 on the peripheral walls of the proton exchange membrane 42 and the second catalyst layer 43. Since the catalyst coating film 4 formed by stacking the first catalyst layer 41, the proton exchange membrane 42 and the second catalyst layer 43 is an integral structure, the portion of the proton exchange membrane 42 extending out of the first catalyst layer 41 is fixed to the support film 7 through the adhesive layer 8, and the outer peripheral walls of the proton exchange membrane 42 and the second catalyst layer 43 are adhered and fixed to the support film 7, the connection strength between the catalyst coating film 4 and the support film 7 can be improved, and the side of the first gas diffusion layer 5 and the side of the second gas diffusion layer 6 are completely separated by the adhesive layer 8, so that the cathode side gas and the anode side gas are prevented from being mutually mixed.
Alternatively, an end of the first gas diffusion layer 5 opposite to the first catalyst layer 41 protrudes from the support film 7 in the thickness direction of the fuel cell unit cell. Specifically, in the thickness direction of the fuel cell unit cell, the first gas diffusion layer 5 has a first side face 51 facing away from the catalyst coating film 4, and the support film 7 has a second side face 72 facing away from the catalyst coating film 4, the second side face 72 being closer to the catalyst coating film 4 than the first side face 51. Specifically, referring to fig. 1, the upper surface of the support film 7 is lower than the upper surface of the first gas diffusion layer 5.
When the fuel cell is prepared by stacking the fuel cell units, the fuel cell units are subjected to a force in the thickness direction thereof, and the first gas diffusion layer 5 can be pressed to improve the performance of the fuel cell; the first gas diffusion layer 5 is pressed at most to be flush with the support film 7, the first gas diffusion layer 5, the catalyst coating film 4 and the second gas diffusion layer 6 are protected by the support film 7, the transitional pressing is prevented, the acting force applied to the catalyst coating film 4 along the thickness direction of the single cell of the fuel cell is reduced, and the first gas diffusion layer 5, the catalyst coating film 4 and the second gas diffusion layer 6 are prevented from being damaged; meanwhile, in the process, the inner peripheral wall of the support film 7 can play a role in limiting the first gas diffusion layer 5.
Alternatively, the support film 7 is provided at intervals on the outer periphery of the first catalyst layer 41, i.e., in a direction perpendicular to the thickness direction of the fuel cell unit cell, with a second interval between the support film 7 and the first catalyst layer 41, see G in fig. 3 2 In other words, the length of the first catalyst layer 41 is smaller than the length of the hollowed-out portion 71 on the support film 7 in the same direction perpendicular to the thickness direction of the fuel cell unit cell, so that the first catalyst layer 41 can be placed in the hollowed-out portion 71 when the fuel cell unit cell is prepared. In a direction perpendicular to the thickness direction of the fuel cell unit cell, there is a first spacing between the support film 7 and the first gas diffusion layer 5, see G in fig. 3 1 In other words, the length of the first gas diffusion layer 5 is smaller than the length of the hollowed-out portions 71 on the support film 7 in the same direction perpendicular to the thickness direction of the fuel cell unit cell.
When the fuel cell is prepared by stacking the fuel cell units, the fuel cell units are subjected to the acting force along the thickness direction, and the supporting film 7, the first catalyst layer 41 and the first gas diffusion layer 5 are separated, so that the first gas diffusion layer 5 and the first catalyst layer 41 can be extruded to improve the performance of the fuel cell, the adhesive layer 8 between the supporting film 7 and the second catalyst layer 43 and between the supporting film 7 and the proton exchange film 42 is not influenced, the stability of connection is ensured, and the adhesive layer 8 effectively separates the side of the first gas diffusion layer 5 from the side of the second gas diffusion layer 6. The spacing between the support film 7 and the first catalyst layer 41 and between the support film and the first gas diffusion layer 5 can also be used as a deformation space for thermal expansion and contraction of the support film 7 when the single fuel cell works and heats, and meanwhile, the support film 7 also has the function of limiting the first catalyst layer 41 during the high-speed production process of the fuel cell and the thermal expansion and contraction of the single fuel cell.
Specifically, in the thickness direction of the fuel cell unit cell, the support film 7 has a third side 73 facing the catalyst coating film 4, the first catalyst layer 41 has a fourth side 411 and a fifth side 412 that are oppositely disposed, and the third side 73 is always located between the fourth side 411 and the fifth side 412. Note that the third side 73 is always located between the fourth side 411 and the fifth side 412, which means that the third side 73 is located between the fourth side 411 and the fifth side 412 before the fuel cell is assembled and after the fuel cell is assembled.
Alternatively, the circumferential edge of the first gas diffusion layer 5 protrudes beyond the first catalyst layer 41, which can be understood as a projection of the first catalyst layer 41 entirely within the first gas diffusion layer 5 in the thickness direction of the fuel cell unit cell. So designed, it is possible to prevent the roughened peripheral edge of the first gas diffusion layer 5, such as the fluffed portion of the carbon fiber, from penetrating into the catalyst coating film 4 to damage the catalyst coating film 4.
When dispensing to form the adhesive layer 8, G is generated due to error in dispensing amount 1 And G 2 It is also possible to provide a space for the glue solution to form the adhesive layer 8 shown in fig. 3. In addition, G 2 It is also possible to allow both the first gas diffusion layer 5 and the first catalyst layer 41 to be pressed when the fuel cell unit cell is subjected to a force in the thickness direction thereof, so as to secure the performance of the fuel cell. In other embodiments, the adhesive layer 8 shown in fig. 4 may also be formed; as shown in fig. 5, an adhesive layer 8 may also be formed on the outer peripheral wall of the first catalyst layer 41; as shown in fig. 6, the adhesive layer 8 may be formed on the outer peripheral wall of the first gas diffusion layer 5 and the outer peripheral wall of the first catalyst layer 41 at the same time.
Alternatively, there is a third interval between the support frame 2 and the second gas diffusion layer 6 in a direction perpendicular to the thickness direction of the fuel cell unit cell, see G shown in fig. 3 3 。G 3 A space can be reserved for the expansion and contraction of the support frame 2. In other embodiments, when dispensing to form the adhesive layer 8, G is due to errors in the dispensing amount 3 As shown in fig. 4, an adhesive layer 8 may be formed on the outer peripheral wall of the second gas diffusion layer 6; as shown in fig. 7, the adhesive 8 may be formed on the inner peripheral wall of the support frame 2.
Alternatively, the adhesive layer 8 is a UV glue layer. In other embodiments, the adhesive layer 8 may also be a hot melt adhesive layer.
The assembly process of the fuel cell is as follows:
(1) As shown in fig. 8, the support film 7 is die-cut by a die-cutting device to form a hollowed-out portion 71 exposing the first gas diffusion layer 5, and fig. 9 (a 1) and (b 1) show cross-sectional views of the support film 7 in the plane of the support film in the thickness direction and the conveying direction before and after die-cutting, respectively, and fig. 9 (a 1) and (b 1) show top views of the support film 7 before and after die-cutting, respectively;
(2) As shown in fig. 9, dispensing is performed around the hole by spraying dispensing equipment; then, the glue is subjected to UV curing by UV irradiation at a curing station, wherein a (a 1) diagram and a (b 1) diagram in fig. 9 respectively show cross sections of planes of the support films 7 before and after dispensing along the thickness direction and the conveying direction, and a (a 1) diagram and a (b 1) diagram in fig. 9 respectively show top views of the support films 7 before and after dispensing;
(3) As shown in fig. 10, the support film 7 is supported and adsorbed by the vacuum flat plate 9, and the second gas diffusion layer 6 and the catalyst coating film 4 are placed in this order on the dispensing side of the support film 7;
(4) As shown in fig. 10, the support film 7 is supported and adsorbed by the vacuum flat plate 9, the catalyst coating film 4 is pressed down, and the support film 7, the second gas diffusion layer 6 and the catalyst coating film 4 are subjected to cold press lamination to obtain a first product;
(5) As shown in fig. 11, the second diaphragm 3 is placed above the support film 7, and microwave hot-pressing pre-lamination is carried out on the second diaphragm 3 and the support film 7, so that a second product is obtained;
(6) As shown in fig. 12, the first product and the second product are subjected to microwave hot-pressing pre-lamination;
(7) As shown in fig. 13, a first gas diffusion layer 5 is placed over a catalyst coated membrane 4 of a first product, a first separator 1 is placed over the first gas diffusion layer 5, a support membrane 7, and a support frame 2, and then a fuel cell unit cell is formed by performing microwave hot press bonding.
The present embodiment also provides a fuel cell including a plurality of the above-described fuel cell unit cells arranged in a stacked manner. The technical effects of the fuel cell using the fuel cell unit are the same as those of the fuel cell unit, and the detailed description thereof will not be repeated.
Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A fuel cell unit cell includes a membrane electrode assembly including a first gas diffusion layer (5), a first catalyst layer (41), a proton exchange membrane (42), a second catalyst layer (43), and a second gas diffusion layer (6) stacked in this order; characterized in that the peripheral edge of the proton exchange membrane (42) protrudes from the first catalyst layer (41), and the peripheral edge of the second gas diffusion layer (6) protrudes from the second catalyst layer (43); the fuel cell unit cell further includes:
a support frame (2) provided on the outer periphery of the second gas diffusion layer (6);
and a support membrane (7) which is arranged on the periphery of the first gas diffusion layer (5) and is fixed on the support frame (2), wherein an adhesive layer (8) is formed between the part of the second gas diffusion layer (6) extending out of the second catalyst layer (43) and the part of the proton exchange membrane (42) extending out of the first catalyst layer (41) and the support membrane (7).
2. The fuel cell unit cell according to claim 1, wherein the adhesive layer (8) is formed on both the outer peripheral wall of the proton exchange membrane (42) and the outer peripheral wall of the second catalyst layer (43).
3. The fuel cell unit cell according to claim 1, wherein an end of the first gas diffusion layer (5) facing away from the first catalyst layer (41) protrudes from the support film (7) in a thickness direction of the fuel cell unit cell.
4. The fuel cell unit cell according to claim 1, wherein the support film (7) is provided at intervals on the outer periphery of the first catalyst layer (41).
5. The fuel cell unit cell according to claim 1, characterized in that the circumferential edge of the first gas diffusion layer (5) protrudes beyond the first catalyst layer (41).
6. The fuel cell unit cell according to claim 5, wherein the adhesive layer (8) is formed on the outer peripheral wall of the first catalyst layer (41).
7. The fuel cell unit cell according to claim 5, wherein there is a first interval between the support film (7) and the first gas diffusion layer (5) in a direction perpendicular to a thickness direction of the fuel cell unit cell.
8. The fuel cell unit cell according to claim 7, wherein the adhesive layer (8) is formed on the outer peripheral wall of the first gas diffusion layer (5).
9. The fuel cell unit cell according to any one of claims 1 to 8, wherein the adhesive layer (8) is a UV glue layer.
10. A fuel cell comprising the fuel cell unit cell according to any one of claims 1 to 9.
CN202321761964.9U 2023-07-06 2023-07-06 Fuel cell unit cell and fuel cell Active CN220189698U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321761964.9U CN220189698U (en) 2023-07-06 2023-07-06 Fuel cell unit cell and fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321761964.9U CN220189698U (en) 2023-07-06 2023-07-06 Fuel cell unit cell and fuel cell

Publications (1)

Publication Number Publication Date
CN220189698U true CN220189698U (en) 2023-12-15

Family

ID=89115984

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321761964.9U Active CN220189698U (en) 2023-07-06 2023-07-06 Fuel cell unit cell and fuel cell

Country Status (1)

Country Link
CN (1) CN220189698U (en)

Similar Documents

Publication Publication Date Title
JP6368807B2 (en) Manufacturing method of fuel cell stack and manufacturing method of metal separator for fuel cell
JP5790083B2 (en) Fuel cell
CN109216724B (en) Fuel cell membrane electrode bonding device and bonding method
JP5695086B2 (en) 5-layer membrane electrode assembly having peripheral portions bonded thereto and manufacturing method thereof
JP4931103B2 (en) Fuel cell components
KR101337905B1 (en) The sub-gasket adhesion method for fuel cell membrane electrode assembly production using ultrasonic vibration
JP5708614B2 (en) Cell module and fuel cell stack
JP5679893B2 (en) Solid oxide fuel cell and method for producing the same
JP2007200700A (en) Fuel cell and its manufacturing method
CN113394436B (en) Fuel cell and method for manufacturing fuel cell
JP3673145B2 (en) Fuel cell stack and manufacturing method thereof
CN220189698U (en) Fuel cell unit cell and fuel cell
JP2005302526A (en) Solid polymer electrolyte membrane and membrane electrode assembly having solid polymer electrolyte membrane
CN219350270U (en) Membrane electrode frame and membrane electrode assembly of fuel cell
JP4496732B2 (en) Fuel cell and fuel cell manufacturing method
CN112582656B (en) Membrane electrode assembly, fuel cell and fuel cell
JP2018120736A (en) Method of manufacturing mea plate
JP2018037345A (en) Conjugate of electrolyte membrane and frame
JP2020145106A (en) Manufacturing method of fuel battery unit cell
US20090104505A1 (en) Structure of a fuel cell stack
JP2000251902A (en) Gas separator for fuel cell, its manufacture and fuel cell
CN114420984A (en) Method for manufacturing fuel cell membrane electrode assembly
JP5461361B2 (en) Manufacturing method of electrolyte membrane / electrode structure for fuel cell
JP2021057218A (en) Fuel battery unit cell
CN219575691U (en) Membrane electrode, single cell and fuel cell

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant