Electrode production of fuel battery membrane with proton exchange membrane
A technology of fuel cell membrane and proton exchange membrane, which is applied to fuel cell parts, solid electrolyte fuel cells, fuel cells, etc., can solve the problem of inability to ensure the complete transfer of the catalytic layer, the flattening of the catalytic layer, the influence of electrode performance, and the tendency to stick to the catalyst. layer and other issues, to achieve easy operation, improved performance, and good reproducibility
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Embodiment 1
[0021] The carbon paper is immersed in a 10% concentration of PTFE emulsion, then dried at 50°C, and then placed in a muffle furnace. The temperature is raised to 240°C for 30 minutes, and then the temperature is increased to 360°C for 30 minutes. Conductive substrate. Mix VXC-72 carbon black and PTFE emulsion uniformly into a slurry, in which the percentage of PTFE is 10%, and then apply the slurry to the conductive substrate by spraying method, dry at 40℃, and then put it in the furnace to raise the temperature first Heat for 30 minutes at 240°C, then continue to heat up to 360°C for 30 minutes. After cooling to room temperature, heat the conductive substrate with carbon black at a temperature of 120°C and a pressure of 1MPa for 100 Second, a gas diffusion layer is formed. After the hot pressing is completed, in order to prevent the gas diffusion layer from deforming, the gas diffusion layer is naturally cooled while maintaining a pressure of 1 MPa. The thickness of the gas diff...
Embodiment 2
[0025]The carbon paper is immersed in a 5% concentration of PTFE emulsion, then dried at 60°C, and then placed in a muffle furnace. The temperature is raised to 250°C for 20 minutes, and then the temperature is increased to 350°C for 15 minutes. Conductive substrate. Then mix the acetylene black and PTFE emulsion uniformly into a slurry, in which the percentage of PTFE is 20%, and then apply the above slurry to the conductive substrate by spraying. After drying at 80°C, it is then placed in a furnace to first raise the temperature to 250 ℃, keep for 20 minutes, then continue to heat up to 350℃, keep for 15 minutes, after cooling to room temperature, then heat the conductive substrate with carbon black at a temperature of 100 ℃ under 0.5MPa pressure for 30 seconds , Form a gas diffusion layer. After the hot pressing is completed, in order to prevent the gas diffusion layer from deforming, the gas diffusion layer is cooled with water while maintaining a pressure of 0.5 MPa. The thic...
Embodiment 3
[0029] The carbon cloth was soaked in a 35% PTFE emulsion, then dried at 80°C, and then placed in a muffle furnace. The temperature was raised to 290°C for 15 minutes, and then the temperature was increased to 340°C for 20 minutes. Conductive substrate. Then mix the acetylene black and PTFE emulsion uniformly into a slurry, where the percentage of PTFE is 40%, and then apply the above slurry to the conductive substrate by spraying, and then dry it at 20°C, then put it in a furnace to first raise the temperature to 290 ℃, keep for 15 minutes, then continue to heat up to 340℃, keep for 25 minutes, after cooling to room temperature, then heat-press the conductive substrate with carbon black at a temperature of 20℃ and a pressure of 5MPa for 300 seconds. A gas diffusion layer is formed. After the hot pressing is completed, in order to prevent the gas diffusion layer from deforming, the gas diffusion layer is cooled with water while maintaining a pressure of 5 MPa. The thickness of the...
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