CN113488668B - Proton exchange membrane fuel cell slurry for improving dispersibility of ionomer in catalyst slurry and preparation method thereof - Google Patents
Proton exchange membrane fuel cell slurry for improving dispersibility of ionomer in catalyst slurry and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a proton exchange membrane fuel cell slurry for improving the dispersibility of an ionomer in a catalyst slurry and a preparation method thereof. Compared with the prior art, the method can reduce the unadsorbed ionomer in the catalyst slurry, so that the ionomer is more uniformly adsorbed on the catalyst, and meanwhile, the microstructure of the cluster catalyst/ionomer interface on the catalyst layer can be improved, the three-phase interface is increased, and the performance of the fuel cell is improved; in addition, the method is simple to operate, the preparation process is easy to control, and the prepared slurry is suitable for preparing roll-to-roll high-flux membrane electrodes such as slit coating, brush coating and the like.
Description
Technical Field
The invention belongs to the technical field of preparation of fuel cell catalyst slurry, relates to proton exchange membrane fuel cell catalyst slurry and a preparation method thereof, and particularly relates to proton exchange membrane fuel cell slurry for improving the dispersibility of an ionomer in the catalyst slurry and a preparation method thereof.
Background
Proton Exchange Membrane Fuel Cells (PEMFCs) are considered to be one of the most potential renewable new energy sources in the 21 st century due to the characteristics of high energy conversion rate, environmental protection and the like, and are currently applied to the fields of transportation, houses, power stations and the like. However, although fuel cell vehicles have been introduced, there is a long way to move away from true commercialization. Reducing platinum loading, particularly on the cathode catalyst layer, without sacrificing performance has been a challenge over the past decade. Membrane Electrodes (MEAs) are key components of the electrochemical reactions that occur in proton exchange membrane fuel cells. And as a core component of the membrane electrode, the microstructure of the catalytic layer greatly influences the performance of the catalyst. In agglomerates on the catalytic layer, there are nano-interfaces between the catalyst and the ionomer, i.e. a thin layer of ionomer, at which the Oxygen Reduction Reaction (ORR) takes place. From the point of view of the Pt/C catalyst, a thin layer of ionomer covering the catalyst controls the transport of protons, electrons and oxygen to the Pt surface. In addition, the thin ionomer layer helps to remove heat and water generated during the oxygen reduction process. Therefore, the structure of the catalyst/ionomer nano-interface on the catalytic layer is critical to the performance of the fuel cell.
Despite the important physicochemical phenomena occurring at the catalyst/ionomer interface, it is a challenge to properly design and optimize the catalyst/ionomer interface structure. Generally, a catalyst layer is prepared by dispersing a catalyst slurry material to prepare a catalyst slurry, depositing the catalyst slurry on a gas diffusion layer or a membrane by a solution deposition technique, such as ultrasonic spraying, slot coating, brush coating, electrostatic spraying, and the like, and evaporating and drying the catalyst slurry to prepare the catalyst layer. The formation of the catalyst/ionomer interface on the catalytic layer is therefore related to the physical coupling of various internal and external forces during these processes, in particular to the dispersion of the ionomer in the catalyst slurry and its adsorption process on the Pt/C. In dilute solutions, the ionomer will exist as a rod-like structure, and as the ionomer concentration increases, the ionomer begins to agglomerate. In the slurry, these ionomers will spontaneously adsorb on the catalyst, however, these ionomers may not be uniformly or completely adsorbed on the ionomer, and thus the catalyst layer may be coated with the ionomer in varying thicknesses and may not be coated with the ionomer. The ionomer covers the catalyst too thick or the ionomer does not contact the catalyst, which may result in a reduction in redox reactions or a reduction in three-phase interfaces, resulting in a reduction in membrane electrode performance. Therefore, it is necessary to start with the catalyst slurry to improve the dispersibility of the ionomer so that the ionomer is more uniformly adsorbed on the catalyst to form a good catalyst/ionomer interface on the catalyst layer, thereby improving the performance of the fuel cell.
Chinese patent 202010788428.2 provides a catalyst slurry for fuel cells and a preparation method thereof, which prevents coagulation and emulsion breaking of PTFE in the slurry by controlling solubility parameters of a solvent, and allows PTFE to be dispersed more uniformly in a catalytic layer.
Chinese patent 202010076629.X relates to a method for preparing a catalyst slurry containing a dispersion aid, the components of the slurry include an organic solvent, a catalyst dissolved in the organic solvent, an ionic conductor solution and a dispersion aid, wherein the dispersion aid is a fluorosulfonic acid polymer or a BYK series dispersant, and can improve the dispersibility and uniformity of the slurry.
Chinese patent 201811175737.1 establishes a preparation method of fuel cell membrane electrode slurry, and the method is characterized in that polyacrylamide, acetic acid and a thickening agent are added into the slurry, so that the agglomeration of catalyst particles is reduced, and the dispersion performance of the catalyst is improved.
Disclosure of Invention
The applicant of the present invention finds out, after intensive research on the prior art, that: the preparation methods of the catalyst slurry can improve the dispersity of the catalyst to a certain extent, but do not pay attention to the dispersity of the ionomer or introduce other substances which can be associated with the catalyst to occupy the catalytic active sites and reduce the three-phase interface.
The present invention aims to overcome the defects of the prior art and provide a proton exchange membrane fuel cell slurry for improving the dispersion of ionomer in catalyst slurry and a preparation method thereof. The catalyst is favorable for uniform dispersion and adsorption of the ionomer on the catalyst in the slurry, and the catalyst/ionomer interface structure on the catalyst layer is improved, so that the membrane electrode performance is improved.
The purpose of the invention can be realized by the following technical scheme:
in a first aspect, the present invention provides a method for preparing a slurry for a proton exchange membrane fuel cell that improves the dispersibility of an ionomer in a catalyst slurry, comprising the steps of:
s1: dispersing the catalyst and water uniformly to obtain a catalyst suspension;
s2: dispersing alcohol and a perfluorinated sulfonic acid resin solution to obtain an ionomer solution, and dividing the ionomer solution into an ionomer solution A, an ionomer solution B and an ionomer solution C;
s3: uniformly dispersing the ionomer solution A and the catalyst suspension obtained in the step S1 to obtain a first catalyst slurry;
s4: uniformly dispersing the ionomer solution B and the first catalyst slurry obtained in the step S3 to obtain a second catalyst slurry;
s5: and (4) uniformly dispersing the ionomer solution C and the second catalyst slurry obtained in the step (S4) to obtain the catalyst slurry of the proton exchange membrane fuel cell.
Preferably, in step S1, the mass ratio of the catalyst to the water in the catalyst suspension is 1 (3-20).
Preferably, in step S1, the catalyst is a Pt/C catalyst, wherein the mass fraction of Pt is 20-60%.
Preferably, in the step S1, in the process of dispersing the catalyst and the water, the dispersing device is a water bath ultrasonic dispersing device, the ultrasonic power is 50-300W, the ultrasonic time is 10-30min, and the ultrasonic temperature is 0-10 ℃.
Preferably, in step S1, the micro-morphology of the Pt/C catalyst includes one of spherical particles, a nanowire structure, a nano-array structure, a core-shell structure, and an octahedral structure.
Preferably, in the step S2, the mass ratio of the alcohol to the perfluorosulfonic acid resin solution is (3-20): 1.
Preferably, in step S2, the mass ratio of the ionomer solution A, the ionomer solution B and the ionomer solution C is (1-4): 1.
Preferably, in the step S2, in the process of dispersing the alcohol and the perfluorosulfonic acid resin solution, the dispersing device is a water bath ultrasonic dispersing device, the ultrasonic power is 50-300W, the ultrasonic time is 10-30min, and the ultrasonic temperature is 0-10 ℃.
Preferably, in step S2, the alcohol is n-propanol or isopropanol.
Preferably, in the step S2, the perfluorinated sulfonic acid resin solution is one of Aquivion D72-25BS, aquivion D79-25BS and Aquivion D98-25 BS.
Preferably, in the step S3, in the process of dispersing the ionomer solution a and the catalyst suspension, the used equipment is a high shear disperser, the shear rotation speed is 10000-15000rpm, the shear time is 30-60min, and the shear temperature is 0-10 ℃.
Preferably, in the step S4, in the process of dispersing the ionomer solution B and the first catalyst slurry, the used equipment is a high shear disperser, the shear rotation speed is 10000-15000rpm, the shear time is 30-60min, and the shear temperature is 0-10 ℃.
Preferably, in the step S5, in the process of dispersing the ionomer solution C and the second catalyst slurry, the used equipment is a high shear disperser, the shear rotation speed is 10000-15000rpm, the shear time is 60-120min, and the shear temperature is 0-10 ℃.
The invention provides a proton exchange membrane fuel cell slurry for improving the dispersion of ionomer in catalyst slurry, and the proton exchange membrane fuel cell slurry is obtained by the preparation method.
Preferably, the solid content of the slurry of the proton exchange membrane fuel cell is 5-15%, and the mass ratio of the perfluorosulfonic acid resin in the ionomer solution to the carrier in the catalyst is (0.6-0.9): 1. Preferably, when the catalyst is a Pt/C catalyst, the mass ratio of the perfluorosulfonic acid resin in the ionomer solution to the carbon on Pt/C is (0.6-0.9): 1.
The catalyst particles are dispersed into small particles and then are redispersed and mixed with the dispersed ionomer solution, so that the ionomer can be orderly dispersed, the contact area between the ionomer and the pre-dispersed small particles of the catalyst can be increased, the ionomer is more uniformly adsorbed on the catalyst, and the ionomer is dispersed by mixing with the catalyst slurry for three times, thereby being beneficial to reducing the agglomeration of the ionomer.
Compared with the prior art, the invention can ensure that the ionomer is dispersed in the slurry more orderly, reduce the formation of the aggregate and the size of the aggregate, ensure that the ionomer is adsorbed on the catalyst more uniformly, and form a good catalyst/ionomer interface structure on the catalyst layer, thereby increasing a three-phase interface, reducing mass transfer resistance and improving the performance of the membrane electrode. In addition, the method is simple to operate and is suitable for large-scale preparation of the slurry.
Drawings
FIG. 1 is a TEM image of the catalyst slurry prepared in example 1;
FIG. 2 is an SEM image of a catalytic layer from the preparation of catalyst slurry of example 1;
fig. 3 is a graph showing a comparison of the performance of membrane electrodes prepared using the catalyst slurries of examples 1 to 4 and comparative example 1.
Detailed Description
The following examples are given in detail to illustrate the embodiments and specific procedures of the present invention, but the scope of the present invention is not limited to the following examples.
The perfluorosulfonic acid solution in the following examples and comparative examples is one of the Aquivion series products of Solvay GmbH company, comprising Aquivion D72-25BS, aquivion D79-25BS and Aquivion D98-25BS, the Pt/C catalyst is self-made, the Pt content is 60%, the BET total specific surface area is 123m 2 g -1 Total pore volume of 0.42cm 3 g -1 The alcohol is n-propanol or isopropanol.
Example 1:
a proton exchange membrane fuel cell slurry for improving the dispersion of an ionomer in a catalyst slurry and a method for preparing the same, comprising the steps of:
1) Mixing 1g of Pt/C catalyst (Pt content is 60%) and 4.92g of deionized water, and performing ultrasonic dispersion at 5 ℃ by adopting a water dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain a catalyst suspension;
2) Mixing 5.76g of n-propanol and 1.12g of Aquivion D79-25BS (mass fraction of 25%) solution, ultrasonically dispersing at 5 ℃ by using a water-dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain an ionomer solution, and mixing the ionomer solution according to a mass ratio of 1:1:1 is divided into a first part, a second part and a third part, and each part has the mass of 2.29g;
3) Mixing 2.29g of ionomer solution with the catalyst suspension prepared in the step (1), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing at 5 ℃ for 40 min;
4) Mixing 2.29g of ionomer solution with the catalyst slurry liquid prepared in the step (3), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained after shearing for 40min at 5 ℃;
5) And (3) mixing 2.29g of the ionomer solution with the catalyst slurry liquid prepared in the step (4), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is sheared at 5 ℃ for 90min to obtain the proton exchange membrane fuel cell catalyst slurry, a TEM image of which is shown in FIG. 1, and the TEM image shows that catalyst particles are relatively uniform and have no agglomeration phenomenon.
Example 2:
a proton exchange membrane fuel cell slurry for improving the dispersibility of an ionomer in a catalyst slurry and a preparation method thereof, comprising the steps of:
1) Mixing 1.5g of Pt/C catalyst (Pt content is 60%) with 5.82g of deionized water, and ultrasonically dispersing at 5 ℃ by adopting a water-dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain a catalyst suspension;
2) Mixing 7.26g of n-propanol and 1.92g of Aquivion D98-25BS (mass fraction of 25%) solution, ultrasonically dispersing at 5 ℃ by using a water-dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain an ionomer solution, and mixing the ionomer solution according to a mass ratio of 2:1:1 is divided into a first part, a second part and a third part, wherein each part has the mass of 4.59g, 2.30g and 2.30g respectively;
3) Mixing 4.59g of ionomer solution with the catalyst suspension prepared in the step (1), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing at 5 ℃ for 40 min;
4) Mixing 2.30g of ionomer solution with the catalyst slurry liquid prepared in the step (3), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing for 40min at 5 ℃;
5) And (5) mixing 2.30g of ionomer solution with the catalyst slurry liquid prepared in the step (4), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry of the proton exchange membrane fuel cell is obtained by shearing for 90min at 5 ℃.
Example 3:
a proton exchange membrane fuel cell slurry for improving the dispersion of an ionomer in a catalyst slurry and a method for preparing the same, comprising the steps of:
1) Mixing 1.2g of Pt/C catalyst (Pt content is 60%) with 17.46g of deionized water, and ultrasonically dispersing at 5 ℃ by adopting a water-dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain a catalyst suspension;
2) Mixing 18.54g of isopropanol and 1.44g of Aquivion D79-25BS (mass fraction of 25%) solution, performing ultrasonic dispersion at 5 ℃ by using a water-divided bath, wherein the ultrasonic power is 100W, the ultrasonic time is 20min, obtaining an ionomer solution, and mixing the ionomer solution according to a mass ratio of 1:1:1 is divided into a first part, a second part and a third part, and each part has the mass of 6.66g;
3) Mixing 6.66g of ionomer solution with the catalyst suspension prepared in the step (1), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing at 5 ℃ for 40 min;
4) Mixing 6.66g of ionomer solution with the catalyst slurry liquid prepared in the step (3), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing for 40min at 5 ℃;
5) And (5) mixing 6.66g of ionomer solution with the catalyst slurry liquid prepared in the step (4), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry of the proton exchange membrane fuel cell is obtained by shearing for 90min at 5 ℃.
Example 4:
a proton exchange membrane fuel cell slurry for improving the dispersibility of an ionomer in a catalyst slurry and a preparation method thereof, comprising the steps of:
1) Mixing 1.2g of Pt/C catalyst (Pt content is 60%) with 21.17g of deionized water, and ultrasonically dispersing at 5 ℃ by adopting a water-dividing bath, wherein the ultrasonic power is 100W, and the ultrasonic time is 20min to obtain a catalyst suspension;
2) Mixing 14.83g of isopropanol and 1.44g of Aquivion D79-25BS (mass fraction of 25%) solution, performing ultrasonic dispersion at 5 ℃ by using a water-divided bath, wherein the ultrasonic power is 100W, the ultrasonic time is 20min, obtaining an ionomer solution, and mixing the ionomer solution according to a mass ratio of 1:1:1 is divided into a first part, a second part and a third part, and each part has the mass of 5.42g;
3) Mixing 5.42g of ionomer solution with the catalyst suspension prepared in the step (1), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained by shearing at 5 ℃ for 40 min;
4) Mixing 5.42g of ionomer solution with the catalyst slurry liquid prepared in the step (3), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry is obtained after shearing for 40min at 5 ℃;
5) And (3) mixing 5.42g of ionomer solution with the catalyst slurry liquid prepared in the step (4), wherein the used equipment is a high-shear disperser, the shearing speed is 13000rpm, and the catalyst slurry of the proton exchange membrane fuel cell is obtained by shearing for 90min at 5 ℃.
Comparative example:
a preparation method of catalyst slurry of a conventional proton exchange membrane fuel cell in a laboratory comprises the following steps:
1) Completely wetting 1g of Pt/C catalyst (Pt content is 60%) with 4.92g of deionized water, then adding 5.76g of n-propanol, and finally adding 1.12g of Aquivion D79-25BS (mass fraction is 25%) of perfluorosulfonic acid resin solution to obtain catalyst slurry; wherein the components and the mixture ratio of the catalyst slurry are the same as those of the catalyst slurry in the example 1;
2) Firstly, ultrasonically dispersing the catalyst slurry at 5 ℃ by adopting a water-dividing bath, wherein the ultrasonic power is 100W, the ultrasonic time is 40min, and then dispersing for 120min at the shearing rotation speed of 13000rpm by adopting a high-shear dispersing machine at 5 ℃ to obtain the catalyst slurry of the proton exchange membrane fuel cell.
Example 5:
the catalyst slurry for the proton exchange membrane fuel cell in example 1 was slit coated to prepare a catalytic layer, and a scanning electron microscope picture of the catalytic layer is shown in fig. 2, and it can be seen from fig. 2 that the catalytic layer has a relatively flat surface structure and does not have large aggregates or particles. Then, the proton exchange membrane fuel cell catalyst slurries of examples 1 to 4 and comparative example were made to be 50cm respectively 2 The power generation performance of the membrane electrode is inspected through a polarization curve, and the electrochemical test conditions are as follows: temperature of the stackAt 75 ℃, the metering ratio of air to hydrogen is 1.5:2.5, the humidifying temperature is 60 ℃. The results are shown in FIG. 3, from which it can be seen that the membrane electrode performance prepared from the catalyst pastes of examples 1-4 is better than that of the comparative example.
In the catalyst slurry, catalyst particles are easy to agglomerate, and the ionomer is self-assembled and agglomerated together and is not easy to disperse. The invention can reduce the unadsorbed ionomer in the catalyst slurry, lead the ionomer to be adsorbed on the catalyst more uniformly, improve the microstructure of the cluster catalyst/ionomer interface on the catalyst layer, increase the three-phase interface and improve the performance of the fuel cell. In addition, the method is simple to operate, the preparation process is easy to control, and the prepared slurry is suitable for preparing roll-to-roll high-flux membrane electrodes such as slit coating, brush coating and the like.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. A method of preparing a proton exchange membrane fuel cell slurry for improving the dispersion of an ionomer in a catalyst slurry, comprising the steps of:
s1: dispersing the catalyst and water uniformly to obtain a catalyst suspension;
s2: dispersing alcohol and a perfluorinated sulfonic acid resin solution to obtain an ionomer solution, and dividing the ionomer solution into an ionomer solution A, an ionomer solution B and an ionomer solution C;
s3: uniformly dispersing the ionomer solution A and the catalyst suspension obtained in the step S1 to obtain a first catalyst slurry;
s4: uniformly dispersing the ionomer solution B and the first catalyst slurry obtained in the step S3 to obtain a second catalyst slurry;
s5: uniformly dispersing the ionomer solution C and the second catalyst slurry obtained in the step S4 to obtain the catalyst slurry of the proton exchange membrane fuel cell;
in the step S1, in the catalyst suspension, the mass ratio of the catalyst to water is 1 (3-20), the catalyst is a Pt/C catalyst, wherein the mass fraction of Pt is 20-60%, in the catalyst and water dispersion process, the used dispersion equipment is water bath ultrasonic dispersion equipment, the ultrasonic power is 50-300W, the ultrasonic time is 10-30min, and the ultrasonic temperature is 0-10 ℃;
in the step S2, the mass ratio of the alcohol to the perfluorinated sulfonic acid resin solution is (3-20): 1, the mass ratio of the ionomer solution A, the ionomer solution B and the ionomer solution C is (1-4): 1, and in the process of dispersing the alcohol and the perfluorinated sulfonic acid resin solution, the used dispersing equipment is water bath ultrasonic dispersing equipment, the ultrasonic power is 50-300W, the ultrasonic time is 10-30min, and the ultrasonic temperature is 0-10 ℃.
2. The method of claim 1 wherein the microstructure of the Pt/C catalyst comprises one of spherical particles, nanowire structures, nanoarray structures, core-shell structures, and octahedral structures.
3. The method of claim 1, wherein step S2 comprises any one or more of the following conditions:
(i) The alcohol is n-propanol or isopropanol;
(ii) The perfluorinated sulfonic acid resin solution is one of Aquivion D72-25BS, aquivion D79-25BS and Aquivion D98-25 BS.
4. The method according to claim 1, wherein in step S3, the dispersion of the ionomer solution A and the catalyst suspension is carried out by using a high shear disperser with a shear rotation speed of 10000-15000rpm, a shear time of 30-60min and a shear temperature of 0-10 ℃.
5. The method according to claim 1, wherein in step S4, the ionomer solution B is dispersed with the first catalyst slurry by using a high shear disperser with a shear rate of 10000-15000rpm, a shear time of 30-60min, and a shear temperature of 0-10 ℃.
6. The method according to claim 1, wherein in the step S5, the ionomer solution C and the second catalyst slurry are dispersed by a high shear disperser with a shear rate of 10000-15000rpm, a shear time of 60-120min, and a shear temperature of 0-10 ℃.
7. A proton exchange membrane fuel cell slurry with improved dispersion of an ionomer in a catalyst slurry, obtained by the preparation method according to any one of claims 1 to 6.
8. The proton exchange membrane fuel cell slurry for improving the dispersibility of the ionomer in the catalyst slurry as claimed in claim 7, wherein the solid content of the proton exchange membrane fuel cell slurry is 5-15%, and the mass ratio of the perfluorosulfonic acid resin in the ionomer solution to the carrier in the catalyst is (0.6-0.9): 1.
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| CN114188582A (en) * | 2021-12-10 | 2022-03-15 | 东方电气(成都)氢燃料电池科技有限公司 | Fuel cell membrane electrode ionomer pretreatment method |
| CN114204053A (en) * | 2021-12-10 | 2022-03-18 | 东方电气(成都)氢燃料电池科技有限公司 | Preparation method of fuel cell membrane electrode slurry |
| CN114388826A (en) * | 2021-12-17 | 2022-04-22 | 深圳航天科技创新研究院 | Air-cooled fuel cell catalyst layer, preparation method thereof and membrane electrode |
| CN114512680B (en) * | 2022-01-19 | 2024-03-26 | 东风汽车集团股份有限公司 | Preparation method of proton exchange membrane fuel cell catalytic layer slurry |
| CN114899419B (en) * | 2022-04-22 | 2023-11-03 | 中国科学院大连化学物理研究所 | Preparation method for improving proton conduction of fuel cell catalytic layer |
| CN114899425A (en) * | 2022-05-17 | 2022-08-12 | 一汽解放汽车有限公司 | Fuel cell catalyst slurry and preparation method and application thereof |
| CN116581304A (en) * | 2023-05-10 | 2023-08-11 | 武汉理工氢电科技有限公司 | Preparation method of catalyst slurry capable of regulating and controlling viscosity of catalyst |
| CN116845253B (en) * | 2023-06-27 | 2024-01-26 | 哈尔滨工业大学 | Method for regulating and controlling three-phase interface of catalytic layer of proton exchange membrane fuel cell |
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| KR20210064638A (en) * | 2019-11-26 | 2021-06-03 | 현대자동차주식회사 | Catalyst slurry for fuel cell and manufacturing method thereof |
| CN112133928B (en) * | 2020-08-21 | 2022-08-19 | 同济大学 | Stable and high-performance proton exchange membrane fuel cell catalyst slurry and preparation method thereof |
| CN112563518B (en) * | 2020-12-11 | 2021-08-31 | 鸿基创能科技(广州)有限公司 | Method for preparing high-stability fuel cell catalyst coating slurry |
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| CN111135761A (en) * | 2019-12-30 | 2020-05-12 | 上海亮仓能源科技有限公司 | Preparation method of anti-settling fuel cell catalyst slurry |
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