| abstract |
In an electrolyte membrane used in a fuel cell system that operates in a temperature range of 100 ° C. or higher under the condition that fuel gas is not humidified, a membrane electrode assembly using the electrolyte membrane, and a method for producing the electrolyte membrane, Suppresses physical defects in the electrolyte membrane and improves durability during long-term operation. According to the present invention, two or more electrolyte membranes having proton conductivity are laminated, and each electrolyte membrane includes an electrolyte membrane laminate for a fuel cell having a basic polymer and an acid, and the electrolyte membrane laminate. And a method for producing the electrolyte membrane laminate are provided. [Selection] Figure 1 |