CN112531188A - Preparation method of fuel cell membrane electrode - Google Patents
Preparation method of fuel cell membrane electrode Download PDFInfo
- Publication number
- CN112531188A CN112531188A CN202011453018.9A CN202011453018A CN112531188A CN 112531188 A CN112531188 A CN 112531188A CN 202011453018 A CN202011453018 A CN 202011453018A CN 112531188 A CN112531188 A CN 112531188A
- Authority
- CN
- China
- Prior art keywords
- membrane
- proton exchange
- exchange membrane
- catalyst
- membrane electrode
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 210000000170 cell membrane Anatomy 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 claims abstract description 184
- 238000005507 spraying Methods 0.000 claims abstract description 45
- 238000007731 hot pressing Methods 0.000 claims abstract description 32
- 238000009792 diffusion process Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 28
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000011865 Pt-based catalyst Substances 0.000 claims abstract description 14
- 229920000557 Nafion® Polymers 0.000 claims abstract description 11
- 239000011259 mixed solution Substances 0.000 claims abstract description 11
- 238000005303 weighing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims abstract description 3
- 239000003054 catalyst Substances 0.000 claims description 45
- 239000004831 Hot glue Substances 0.000 claims description 18
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims 2
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims 1
- 229910001260 Pt alloy Inorganic materials 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 230000008961 swelling Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 29
- 239000007789 gas Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 7
- 238000001132 ultrasonic dispersion Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/886—Powder spraying, e.g. wet or dry powder spraying, plasma spraying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8896—Pressing, rolling, calendering
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
Abstract
A preparation method of a fuel cell membrane electrode comprises the following steps of: weighing a Pt-based catalyst, dispersing the Pt-based catalyst in a mixed solution of water and an organic solvent, dropwise adding a mixed solution of Nafion and isopropanol into the mixed solution while cooling and ultrasonically dispersing the Pt-based catalyst in an ice bath, cooling and ultrasonically dispersing the Pt-based catalyst in the ice bath for 0.5-5 hours, and cutting a membrane: cutting a proton exchange membrane and a gas diffusion membrane into required sizes according to the catalytic active area of a membrane electrode to be prepared, reserving 1-10mm of each side, cutting an edge sealing membrane according to the sizes of the cut proton exchange membrane and the cut gas diffusion membrane, and fixing a support membrane: the front side of the proton exchange membrane obtained by cutting is adhered with the support membrane through glue, the back side of the proton exchange membrane is not treated, the using amount of the proton exchange membrane is reduced, after the proton exchange membrane is subjected to hot pressing for the first time, the frame membrane and the gas diffusion layer can play a role in supporting and protecting, and the problems of swelling, deformation and distortion in the processes of operation, spraying, hot pressing and the like can be effectively avoided.
Description
Technical Field
The invention relates to the field of fuel cell membrane electrode processing, in particular to a preparation method of a fuel cell membrane electrode.
Background
As traditional energy sources gradually exit the historical arena, hydrogen energy and fuel cells will become emerging energy source changes. The hydrogen fuel cell technology has become a clean energy technology which is mainly developed in various countries in the world as an important link of the hydrogen energy revolution. The fuel cell consists of bipolar plates and a membrane electrode, wherein the membrane electrode is a core component of the fuel cell and accounts for about 60 percent of the cost of the whole fuel cell. The development of a high-quality and low-cost membrane electrode preparation process is an important link for the development of hydrogen fuel cells.
Currently, there are two main processes for preparing membrane electrodes: one is to coat the catalyst on the gas diffusion layer (carbon paper or carbon cloth), then press the gas diffusion layer of the cathode and anode on the two sides of the proton exchange membrane by hot pressing, the process is relatively simple and mature, but the prepared membrane electrode has larger contact internal resistance and low catalyst utilization rate, and can not realize the preparation of high-quality membrane electrode technology; another commercially available Membrane electrode preparation method, also the mainstream, is the CCM (Catalyst Coated Membrane) technique, i.e., Catalyst slurry is directly sprayed onto a proton exchange Membrane to form a Catalyst layer-Membrane-Catalyst layer three-in-one whole, and then the Catalyst layer and a gas diffusion layer are assembled into a Membrane electrode. However, due to the trend of forward ultrathin (the thickness of the mainstream proton membrane is reduced to below 20 microns), the proton exchange membrane is easy to deform due to high flexibility, and the membrane is easy to swell and deform in the spraying process, so that the process is complex and the consistency is poor; on the other hand, the ultra-thin membrane has high requirements on the technical difficulty of edge sealing, and excessive proton membranes must be reserved for the requirement of edge sealing, so that the waste of the proton membranes is caused, and the cost of the membrane electrode is increased.
Related patent
Patent CN201710595430.6 discloses a preparation process of a fuel cell membrane electrode assembly based on CCM technology, which includes preparing catalyst slurry, directly coating the catalyst slurry on both sides of a proton exchange membrane, fixing gas diffusion layers on both sides of a CCM membrane electrode, and performing edge sealing treatment to obtain the fuel cell membrane electrode assembly. The process is simple, hot pressing is not needed, but for soft proton membranes below 50 microns, the technical difficulty of membrane transfer and packaging operation is high, mass production is not facilitated, and the consistency of the prepared CCM membrane electrode cannot be effectively guaranteed.
The patent CN200810204032.8 discloses a method for preparing proton exchange membrane fuel cell electrode, firstly spraying catalyst on a transfer film, hot pressing cathode and anode catalyst layers on the proton exchange membrane by two times of transfer printing-hot pressing, and finally adding a frame used for sealing and insulating to the three-in-one membrane electrode of the proton exchange membrane and the diffusion layer after the catalyst transfer printing.
Therefore, how to use a better membrane electrode preparation process to reduce the interface resistance, improve the utilization rate of the proton exchange membrane, reduce the cost of the proton membrane in the membrane electrode, reduce the use amount of the catalyst under the condition of not attenuating the performance and the service life of the battery, reduce the manufacturing cost of the electrode and ensure the consistency of the prepared membrane electrode at the same time.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a fuel cell membrane electrode, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: a preparation method of a fuel cell membrane electrode comprises the following steps of: weighing a Pt-based catalyst, dispersing the Pt-based catalyst in a mixed solution of water and an organic solvent, dropwise adding a mixed solution of Nafion and isopropanol into the mixed solution while cooling and ultrasonically dispersing the Pt-based catalyst in an ice bath, cooling and ultrasonically dispersing the Pt-based catalyst in the ice bath for 0.5-5 hours, and cutting a membrane: cutting a proton exchange membrane and a gas diffusion membrane into required sizes according to the catalytic active area of a membrane electrode to be prepared, reserving 1-10mm of each side, cutting an edge sealing membrane according to the sizes of the cut proton exchange membrane and the cut gas diffusion membrane, and fixing a support membrane: adhering the front side of the proton exchange membrane obtained by cutting to a support membrane through glue, carrying out no treatment on the back side, and ultrasonically spraying a catalyst layer on the back side of the proton exchange membrane: flatly sucking a proton exchange membrane with a support membrane on a vacuum sucker in a vacuum manner, spraying a catalyst on the reverse side of the proton exchange membrane by adopting an ultrasonic spraying method, and packaging the reverse side of the proton exchange membrane on a single side: adjusting the pressure of a flat plate hot press to enable the force acting on the electrode to be 0.1-0.8MPa, adjusting the temperature of an upper plate and a lower plate of the flat plate hot press to 80-160 ℃, sealing an edge membrane, a gas diffusion layer, a hot melt adhesive membrane and the reverse side of a proton exchange membrane in sequence, carrying out hot pressing on the flat plate hot press for 1-120s to obtain a half membrane electrode, and ultrasonically spraying a catalyst layer on the front side of the proton exchange membrane: removing the support film on the half-sheet membrane electrode obtained by unilateral packaging, flatly sucking the support film on a vacuum sucker in a vacuum manner, and spraying the front surface of the proton exchange membrane by ultrasonic; unilateral packaging of the front side of the proton exchange membrane: and adjusting the pressure of the flat plate hot press to enable the force acting on the electrodes to be 0.1-0.8MPa, adjusting the temperature of the upper plate and the lower plate to be 60-160 ℃, sequentially carrying out hot pressing on the half membrane electrodes, the hot melt adhesive, the gas diffusion layer and the edge sealing membrane A for 1-180s on the hot press, and drying to obtain the fully assembled membrane electrode.
The invention has the following advantages:
firstly, spraying a catalyst layer on the other side of the proton exchange membrane with a support membrane, then carrying out first hot pressing on the edge sealing membrane, the hot melt adhesive and the carbon paper to form a half membrane electrode, then removing the support membrane, then spraying the catalyst layer on the other side of the proton exchange membrane, the edge sealing membrane, the hot melt adhesive and the carbon paper are hot-pressed to finally form the eight-in-one membrane electrode, before the first hot pressing, the proton exchange membrane has a single-sided supporting protective layer, can effectively avoid the problems of swelling, deformation and distortion in the processes of operation, spray coating, hot pressing and the like, meanwhile, the convenience of operation can reduce the use of the edge-sealed reserved proton exchange membrane and the use amount of the proton exchange membrane, after the first hot pressing, the frame membrane and the gas diffusion layer can play a role in supporting and protecting, so that the problems of swelling, deformation and distortion in the processes of spraying, hot pressing and the like can be effectively avoided, and the technical problems related to the background art are pertinently solved.
Drawings
FIG. 1 is a sequence of lamination of the various film layers of the present invention;
FIG. 2 is a sequence of lamination of the various film layers of the present invention;
FIG. 3 is a sequence of lamination of the various film layers of the present invention;
FIG. 4 is a graph comparing the performance of a conventional membrane electrode package with a membrane electrode packaged in the present invention;
Detailed Description
The prevention of swelling, deformation and distortion during operation of spray hot pressing and the like to be solved by the present invention will be specifically described below based on examples, but the present invention is not limited to these examples.
(example 1)
The membrane electrode with the effective active area of 5 x 5cm is prepared by traditional one-time hot pressing:
step 1, weighing 25mg of 60% Pt/C catalyst, ultrasonically dispersing the Pt/C catalyst in 10mL of water, adding 5mL of isopropanol and 3mL of DMF, fully stirring, and then cooling in an ice bath for ultrasonic dispersion;
step 2, weighing 0.2g of 5% Nafion solution, adding the 5% Nafion solution into 12mL of isopropanol, dropwise adding a mixed solution of Nafion and isopropanol into the solution prepared in the previous step under the condition of ice bath cooling and ultrasonic dispersion, and continuing ultrasonic dispersion for 1 hour under the condition of ice bath cooling;
step 3, cutting the proton exchange membrane, the two edge sealing membranes, the hot melt adhesive membrane and the gas diffusion layer respectively, wherein the sizes of the two edge sealing membranes are as follows: proton exchange membranes (5.2 × 5.2cm), edge sealing membranes (inner square holes: 5 × 5cm, outer 9 × 9cm and inner square holes: 5.2 × 5.2cm, outer 9 × 9cm), gas diffusion layers (5 × 5cm), hot melt adhesives (inner square holes 5 × 5cm, outer 9 × 9 cm);
step 4, sucking the proton exchange membrane on a vacuum sucker in a vacuum manner, spraying 17.5mL of catalyst on the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying speed is 50 microliters/min, and the spraying area is 5 x 5cm at the middle position;
step 5, spraying a catalyst on the other surface of the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying rate of the catalyst is 50 microliters/minute, and the spraying area is 5 x 5cm at the middle position;
and 6, according to the stacking mode shown in the figure 1, hot-pressing the proton exchange membrane, the edge sealing membrane, the hot melt adhesive and the gas diffusion layer on a flat vacuum chuck for 25s at the hot-pressing temperature of 100 ℃ under the pressure of 0.4MPa, so as to prepare the membrane electrode.
(example 2)
The membrane electrode with the effective active area of 5 x 5cm is prepared by adopting the method provided by the invention:
step 1, firstly weighing 25mg of 60% Pt/C catalyst, ultrasonically dispersing the Pt/C catalyst in 10mL of water, then adding 5mL of isopropanol and 3mL of DMF, fully stirring, and then cooling in an ice bath and ultrasonically dispersing to obtain a solution;
step 2, adding 0.2g of 5% Nafion solution into 12mL of isopropanol, dropwise adding a mixed solution of Nafion and isopropanol into the solution obtained in the step 1 under the condition of ice bath cooling and ultrasonic dispersion, and continuing ultrasonic dispersion for 1 hour under the condition of ice bath cooling;
step 3, cutting the proton exchange membrane, the two edge sealing membranes, the hot melt adhesive membrane and the gas diffusion layer respectively, wherein the sizes of the two edge sealing membranes are as follows: proton exchange membranes (5.2 × 5.2cm), edge sealing membranes (inner square holes: 5 × 5cm, outer 9 × 9cm and inner square holes: 5.2 × 5.2cm, outer 9 × 9cm), gas diffusion layers (5 × 5cm), hot melt adhesives (inner square holes 5 × 5cm, outer 9 × 9 cm);
step 4, adhering the front side of the proton exchange membrane obtained by cutting to a support membrane through glue, and performing no treatment on the back side;
step 5, sucking the proton exchange membrane with the support membrane on a vacuum sucker in a vacuum manner, and spraying a catalyst on the reverse side of the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying amount of the catalyst is 17.5mL, the spraying speed is 50 microliter/min, and the spraying area of the catalyst is 5 x 5cm in the middle position;
step 6, hot-pressing the proton exchange membrane, the edge sealing membrane, the hot melt adhesive membrane and the gas diffusion layer on a flat-laid vacuum chuck for 5s at the hot-pressing temperature of 100 ℃ under the pressure of 0.3MPa to obtain a half membrane electrode;
step 7, removing the support membrane on the proton exchange membrane in the obtained half-sheet membrane electrode, flatly sucking the support membrane on a vacuum sucker in a vacuum manner, and spraying a catalyst on the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying amount of the catalyst is 4mL, the spraying speed is 50 microliters/min, and the spraying area is 5 x 5cm at the middle position;
and 8, according to the stacking mode shown in the figure 2, hot-pressing the proton exchange membrane, the edge sealing membrane, the hot melt adhesive and the gas diffusion layer on a flat vacuum chuck for 20s at the hot-pressing temperature of 100 ℃ under the pressure of 0.4MPa to prepare the membrane electrode.
(example 3)
The membrane electrode with the effective active area of 15 x 15cm is prepared by adopting the method provided by the invention:
step 1, firstly weighing 500mg of 40% Pt/C catalyst, ultrasonically dispersing the catalyst in 100mL of water, then adding 50mL of isopropanol and 30mL of DMF, fully stirring, and then cooling in an ice bath and ultrasonically dispersing to obtain a solution;
step 2, weighing 6g of 5% Nafion solution, adding the 5% Nafion solution into 20mL of isopropanol, dropwise adding a mixed solution of Nafion and the isopropanol into the solution obtained in the step 1 under the condition of ice bath cooling and ultrasonic dispersion, and continuing ultrasonic dispersion for 1 hour under the condition of ice bath cooling;
step 3, cutting the proton exchange membrane, the two edge sealing membranes, the hot melt adhesive membrane and the gas diffusion layer respectively, wherein the sizes of the two edge sealing membranes are as follows: proton exchange membranes (15.5 × 15.5cm), edge sealing membranes (inner square holes: 15 × 15cm, outer 20 × 16cm, inner square holes: 15.5 × 15.5cm, outer 20 × 16cm), gas diffusion layers (15 × 15cm), hot melt adhesives (inner square holes 15 × 15cm, outer 20 × 16 cm);
step 4, adhering the front side of the proton exchange membrane obtained by cutting to a support membrane through glue, and performing no treatment on the back side;
step 5, sucking the proton exchange membrane with the support membrane on a vacuum sucker in a vacuum manner, and spraying a catalyst on the reverse side of the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying amount of the catalyst is 78mL, the spraying speed is 1 mL/min, and the spraying area of the catalyst is 15 x 15cm at the middle position;
step 6, hot-pressing the proton exchange membrane, the edge sealing membrane, the hot melt adhesive membrane and the gas diffusion layer on a flat-laid vacuum chuck for 5s at the hot-pressing temperature of 120 ℃ under the pressure of 0.4MPa to obtain a half membrane electrode;
step 7, removing the support membrane on the proton exchange membrane in the obtained half-sheet membrane electrode, flatly sucking the support membrane on a vacuum sucker in a vacuum manner, and spraying a catalyst on the proton exchange membrane by adopting an ultrasonic spraying method, wherein the spraying amount of the catalyst is 18mL, the spraying speed is 500 microliters/min, and the spraying area is 15 x 15cm at the middle position;
and 8, according to the stacking mode shown in the figure 2, hot-pressing the proton exchange membrane, the edge sealing membrane, the hot melt adhesive and the gas diffusion layer on a flat vacuum chuck for 20s at the hot-pressing temperature of 120 ℃ under the pressure of 0.6MPa to prepare the membrane electrode.
In example 1, when the membrane electrode is prepared, the proton exchange membrane is easily swelled and distorted when the catalyst is sprayed, and the operability of stacking various materials in example 1 for hot pressing is very poor, so that the proton exchange membrane is easily distorted and dislocated; the two-time hot pressing method adopted in the membrane electrode preparation processes of the embodiment 2 and the embodiment 3 in the membrane electrode preparation process effectively solves the problems of swelling, distortion, dislocation and the like in the embodiment 1, and the operation is very simple and convenient; it can be seen from example 3 that the operability is also very good when a larger membrane electrode is prepared by the double hot pressing method. By performing performance tests on the membrane electrodes prepared in the embodiments 1 and 2, it can be clearly seen that the performance of the membrane electrode prepared by the twice hot pressing method in the embodiment 2 is far better than that of the membrane electrode in the embodiment 1, and the operability and the battery performance of the membrane electrode process can be improved by the twice hot pressing method adopted in the invention.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
Claims (5)
1. A preparation method of a fuel cell membrane electrode is characterized by comprising the following steps: comprises the following steps
Preparing catalyst slurry: weighing a Pt-based catalyst, dispersing the Pt-based catalyst in a mixed solution of water and an organic solvent, dropwise adding a mixed solution of Nafion and isopropanol into the Pt-based catalyst while cooling and ultrasonically dispersing the Pt-based catalyst in an ice bath, and cooling and ultrasonically dispersing the Pt-based catalyst in the ice bath for 0.5 to 5 hours;
cutting a membrane body: cutting the proton exchange membrane and the gas diffusion membrane into required sizes according to the catalytic active area of the membrane electrode to be prepared, reserving 1-10mm of each side, and cutting the edge sealing membrane according to the sizes of the cut proton exchange membrane and the cut gas diffusion membrane;
fixing a support film: adhering the front side of the proton exchange membrane obtained by cutting to a support membrane by glue, and carrying out no treatment on the back side;
ultrasonic spraying of a catalyst layer on the reverse side of the proton exchange membrane: sucking the proton exchange membrane with the support membrane on a vacuum sucker in a vacuum manner, and spraying a catalyst on the reverse side of the proton exchange membrane by adopting an ultrasonic spraying method;
packaging the reverse side of the proton exchange membrane on a single side: adjusting the pressure of a flat plate hot press to enable the force acting on the electrode to be 0.1-0.8MPa, adjusting the temperature of an upper plate and a lower plate of the flat plate hot press to 80-160 ℃, sealing the reverse sides of the membrane, the gas diffusion layer, the hot melt adhesive membrane and the proton exchange membrane in sequence, and carrying out hot pressing on the flat plate hot press for 1-120s to obtain a half membrane electrode;
ultrasonic spraying of a catalyst layer on the front surface of the proton exchange membrane: removing the support film on the half-sheet membrane electrode obtained by unilateral packaging, flatly sucking the support film on a vacuum sucker in a vacuum manner, and spraying the front surface of the proton exchange membrane by ultrasonic;
unilateral packaging of the front side of the proton exchange membrane: and adjusting the pressure of the flat plate hot press to enable the force acting on the electrodes to be 0.1-0.8MPa, adjusting the temperature of the upper plate and the lower plate to be 60-160 ℃, sequentially carrying out hot pressing on the half membrane electrodes, the hot melt adhesive, the gas diffusion layer and the edge sealing membrane for 1-180s on the hot press, and drying to obtain the fully assembled membrane electrode.
2. The fuel cell membrane electrode assembly production method according to claim 1, characterized in that: the support film is a PET protective film.
3. The fuel cell membrane electrode assembly production method according to claim 1, characterized in that: the organic solvent is one of DMF, ethylene glycol, isopropanol, methanol, ethanol, acetone and acetonitrile.
4. The fuel cell membrane electrode assembly production method according to claim 1, characterized in that: the Pt-based catalyst in the step of preparing the catalyst slurry is a Pt/C catalyst or a Pt alloy/C catalyst.
5. The fuel cell membrane electrode assembly production method according to claim 1, characterized in that: and in the step of cutting the membrane body, the thickness of the edge sealing membrane and the hot melt adhesive is less than or equal to that of the gas diffusion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453018.9A CN112531188A (en) | 2020-12-08 | 2020-12-08 | Preparation method of fuel cell membrane electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453018.9A CN112531188A (en) | 2020-12-08 | 2020-12-08 | Preparation method of fuel cell membrane electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112531188A true CN112531188A (en) | 2021-03-19 |
Family
ID=74998823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011453018.9A Pending CN112531188A (en) | 2020-12-08 | 2020-12-08 | Preparation method of fuel cell membrane electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112531188A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633530A (en) * | 2022-04-07 | 2022-06-17 | 合肥工业大学 | Ion exchange membrane type multi-stimulus-source response flexible driver, preparation method and application |
| CN114725410A (en) * | 2022-03-31 | 2022-07-08 | 东风汽车集团股份有限公司 | Catalyst layer slurry, preparation method and preparation method of catalyst layer membrane electrode |
| CN115193625A (en) * | 2022-08-12 | 2022-10-18 | 上海明天观谛氢能科技有限公司 | Spraying clamp and spraying method for fuel cell membrane electrode |
| CN115458754A (en) * | 2022-10-27 | 2022-12-09 | 惠州亿纬燃料电池有限公司 | Preparation method and application of catalyst slurry |
| CN118486844A (en) * | 2024-06-05 | 2024-08-13 | 华东理工大学 | Method for preparing high-temperature proton exchange membrane fuel cell membrane electrode based on carbon-supported platinum-nickel alloy catalyst |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020064593A1 (en) * | 2000-10-12 | 2002-05-30 | Joachim Kohler | Process for producing a membrane electrode assembly for fuel cells |
| US20050287290A1 (en) * | 2004-06-23 | 2005-12-29 | Byd Company Limited | Gas diffusion electrodes and membrane electrode assemblies for proton exchange membrane fuel cells |
| CN1839499A (en) * | 2003-06-27 | 2006-09-27 | 乌米科雷股份两合公司 | Method for producing catalyst-coated polymer electrolyte membrane |
| WO2011124039A1 (en) * | 2010-04-09 | 2011-10-13 | 新源动力股份有限公司 | A preparing method for integrated membrane-catalyst coated layer membrane electrode for a fuel cell |
| CN109473683A (en) * | 2019-01-07 | 2019-03-15 | 长兴欧森科技有限公司 | A kind of fuel cell membrane electrode industrial production production system and its production method |
| CN109585859A (en) * | 2018-10-08 | 2019-04-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of film electrode component of proton exchange film fuel battery |
| CN110459774A (en) * | 2019-08-12 | 2019-11-15 | 南京大学昆山创新研究院 | A kind of preparation method of fuel cell membrane electrode |
-
2020
- 2020-12-08 CN CN202011453018.9A patent/CN112531188A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020064593A1 (en) * | 2000-10-12 | 2002-05-30 | Joachim Kohler | Process for producing a membrane electrode assembly for fuel cells |
| CN1839499A (en) * | 2003-06-27 | 2006-09-27 | 乌米科雷股份两合公司 | Method for producing catalyst-coated polymer electrolyte membrane |
| US20050287290A1 (en) * | 2004-06-23 | 2005-12-29 | Byd Company Limited | Gas diffusion electrodes and membrane electrode assemblies for proton exchange membrane fuel cells |
| WO2011124039A1 (en) * | 2010-04-09 | 2011-10-13 | 新源动力股份有限公司 | A preparing method for integrated membrane-catalyst coated layer membrane electrode for a fuel cell |
| CN109585859A (en) * | 2018-10-08 | 2019-04-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of film electrode component of proton exchange film fuel battery |
| CN109473683A (en) * | 2019-01-07 | 2019-03-15 | 长兴欧森科技有限公司 | A kind of fuel cell membrane electrode industrial production production system and its production method |
| CN110459774A (en) * | 2019-08-12 | 2019-11-15 | 南京大学昆山创新研究院 | A kind of preparation method of fuel cell membrane electrode |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114725410A (en) * | 2022-03-31 | 2022-07-08 | 东风汽车集团股份有限公司 | Catalyst layer slurry, preparation method and preparation method of catalyst layer membrane electrode |
| CN114725410B (en) * | 2022-03-31 | 2023-12-19 | 东风汽车集团股份有限公司 | Catalytic layer slurry, preparation method and preparation method of catalytic layer membrane electrode |
| CN114633530A (en) * | 2022-04-07 | 2022-06-17 | 合肥工业大学 | Ion exchange membrane type multi-stimulus-source response flexible driver, preparation method and application |
| CN114633530B (en) * | 2022-04-07 | 2024-06-04 | 合肥工业大学 | Ion exchange membrane type multi-stimulus response flexible driver, preparation method and application |
| CN115193625A (en) * | 2022-08-12 | 2022-10-18 | 上海明天观谛氢能科技有限公司 | Spraying clamp and spraying method for fuel cell membrane electrode |
| CN115193625B (en) * | 2022-08-12 | 2024-09-17 | 上海明天观谛氢能科技有限公司 | Spraying fixture and spraying method for fuel cell membrane electrode |
| CN115458754A (en) * | 2022-10-27 | 2022-12-09 | 惠州亿纬燃料电池有限公司 | Preparation method and application of catalyst slurry |
| CN118486844A (en) * | 2024-06-05 | 2024-08-13 | 华东理工大学 | Method for preparing high-temperature proton exchange membrane fuel cell membrane electrode based on carbon-supported platinum-nickel alloy catalyst |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112531188A (en) | Preparation method of fuel cell membrane electrode | |
| CN104617310B (en) | A kind of preparation method of the fuel cell membrane electrode of band sealed frame | |
| CN101393989B (en) | Core component having sealed frame and membrane electrode prepared thereby | |
| CN113517449B (en) | Membrane electrode assembly and preparation method thereof | |
| EP1704609B1 (en) | Gas diffusion electrodes and membrane electrode assemblies for proton exchange membrane fuel cells | |
| CN110459774A (en) | A kind of preparation method of fuel cell membrane electrode | |
| CN109088073A (en) | Ccm membrane electrode of proton exchange membrane fuel cell and preparation method thereof | |
| WO2021035888A1 (en) | Membrane electrode assembly and preparation method therefor, and fuel monocell | |
| CN112909267A (en) | MEA for proton exchange membrane fuel cell and preparation method thereof | |
| CN109904469A (en) | A membrane electrode preparation method for optimizing the structure of the cathode catalytic layer | |
| CN111584880B (en) | Low-platinum proton exchange membrane fuel cell membrane electrode and preparation method thereof | |
| CN111261878B (en) | Catalyst slurry containing aqueous gel, catalyst layer and fuel cell electrode produced therefrom | |
| CN113437338B (en) | Fuel cell membrane electrode and preparation method thereof | |
| CN110943233A (en) | A kind of preparation method of high-efficiency fuel cell platinum-based catalyst | |
| CN116404218A (en) | High-performance membrane electrode with low interface resistance, preparation method and fuel cell comprising same | |
| CN108767297B (en) | Preparation method of fuel cell membrane electrode | |
| CN103474683B (en) | Improve membrane electrode assembly of integral type regenerative fuel cell performance and preparation method thereof | |
| CN110311152B (en) | Sealing method | |
| CN108011109B (en) | A kind of preparation method of membrane electrode and fuel cell | |
| WO2020252606A1 (en) | Membrane electrode structure for fuel cell, method for preparing membrane electrode for fuel cell, and proton exchange membrane fuel cell system | |
| CN115954487A (en) | A kind of preparation method of fuel cell membrane electrode with high uniformity | |
| CN115312820A (en) | Preparation method of regional protective film for coating method and membrane electrode thereof | |
| CN117059849A (en) | Proton exchange membrane fuel cell membrane electrode and preparation method thereof | |
| CN114583227A (en) | A kind of preparation method of multi-layer complex structure membrane electrode based on inkjet printing | |
| CN100486006C (en) | Method for preparing membrane electrode of proton exchange membrane fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
|
| RJ01 | Rejection of invention patent application after publication |