According to the membrane electrode assembly for solid polymer electrolyte fuel cell in which {HEAD ~ a polyarylene based copolymer} having a specific repeating constitutional unit is used as a proton conductive membrane, the membrane electrode assembly for {TAIL ~ solid polymer} electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment can be provided 
According to the membrane electrode assembly for solid polymer electrolyte fuel cell in which { HEAD ~ a polyarylene based copolymer } having a specific repeating constitutional unit is used as a proton conductive membrane , the membrane electrode assembly for { TAIL ~ solid polymer } electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation , and that has both excellent power generation performance and durability in a low temperature environment can be provided
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH