MEMBRANE-ELECTRODE ASSEMBLY AND FUEL CELL COMPRISING THE SAME

摘要

Disclosed is a membrane-electrode assembly (10) comprising a proton conductive electrolyte membrane (11) and a first electrode (12) bonded to the electrolyte membrane. The first electrode contains a catalyst (121, 122) and a first ionomer (123) covering the catalyst and having a proton exchange function. This membrane-electrode assembly (10) is characterized in that the value of [generated water (mol/min)]/[volume of first ionomer (cm³)] at a rated output point of the membrane-electrode assembly is not less than 1350 in the first electrode.