Polymer electroyte membrane, membrane electrode assembly and fuel cell using the assembly
A technology of membrane-electrode assembly and solid polymer, which is applied in the direction of fuel cells, fuel cell additives, fuel cell components, etc., can solve problems such as high cost, complicated manufacturing process, and increased ion conduction resistance of electrolyte membranes
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Embodiment 1
[0035] (Manufacture of electrolyte composite membrane)
[0036] The number average molecular weight is 4×10 4 , ion exchange equivalent weight 8×10 2 g / equivalent of sulfonated polyethersulfone (S-PES) was dissolved in N,N-dimethylacetamide to prepare a 30% by weight electrolyte solution. This electrolytic solution was cast-coated on a glass substrate, a polyolefin porous membrane was placed thereon and immersed, and the electrolytic solution was cast-coated thereon. At this time, by controlling the casting amount of the electrolyte, the thickness of the electrolyte layer on both surfaces of the polymer layer is changed. Then, heat and dry at 80°C for 20 minutes, and then at 120°C for 20 minutes, remove the solvent in the solution, and make an electrolyte membrane with a porous layer on the inside of a pair of electrolyte layers, and the thickness of one electrolyte layer is larger than the thickness of the other electrolyte layer solid polymer electrolyte composite membran...
Embodiment 2
[0040] (Manufacture of electrolyte composite membrane)
[0041] The number average molecular weight is 4×10 4 , ion exchange equivalent weight 11×10 2 g / equivalent of sulfonated polyethersulfone (S-PES) was dissolved in N,N-dimethylacetamide to prepare a 30% by weight electrolyte solution. This electrolytic solution was cast-coated on a glass substrate, and a polyolefin porous membrane was placed thereon for immersion, and then the electrolytic solution produced in Example 1 was cast-coated thereon. Then, heat and dry at 80°C for 20 minutes, and then at 120°C for 20 minutes, remove the solvent in the solution, and make an electrolyte membrane with a porous layer inside a pair of electrolyte layers. The ion exchange equivalent weight of one electrolyte layer is higher than that of the other electrolyte. The ion exchange equivalent weight of the layer is a solid polymer electrolyte composite membrane. By observing the cross section of the obtained electrolyte composite membra...
Embodiment 3
[0045] (Manufacture of electrolyte composite membrane)
[0046] The number average molecular weight is 7×10 4 , ion exchange equivalent weight 8×10 2 g / equivalent of sulfonated polyethersulfone was dissolved in N,N-dimethylacetamide to prepare a 30% by weight electrolyte solution. This electrolytic solution was cast-coated on a glass substrate, and a polyolefin porous membrane was placed thereon for immersion, and then the electrolytic solution produced in Example 1 was cast-coated thereon. Then, heat and dry at 80°C for 20 minutes, and then at 120°C for 20 minutes, remove the solvent in the solution, and make an electrolyte membrane with a porous layer inside a pair of electrolyte layers. The average molecular weight of one electrolyte layer is higher than that of the other electrolyte layer. Solid polymer electrolyte composite membrane with large average molecular weight. By observing the cross section of the obtained electrolyte composite membrane, the entire thickness o...
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Abstract
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