MEMBRANE-ELECTRODE JUNCTION FOR POLYMER ELECTROLYTE FUEL CELL, MANUFACTURING METHOD THEREFOR, AND POLYMER ELECTROLYTE FUEL CELL

Provided are a membrane electrode assembly for a polymer electrolyte fuel cell having high power-generating characteristics in a high-temperature, low-humidity environment, and a polymer electrolyte fuel cell using the same. In this membrane electrode assembly for a polymer electrolyte fuel cell provided with electrode catalyst layers (2, 3), which include at least a proton-exchange polymer and carbon-supported catalyst, on both surfaces of a polymer electrolyte membrane (4), the resistance (Ri) of the proton-exchange polymer of the electrode catalyst layers (2, 3) is at least 2 ©cm 2 but not more than 5 ©cm 2 under measurement conditions of 20% relative humidity and an AC impedance of 10 kHz to 100 Hz.