GAS DIFFUSION LAYER AND MEMBRANE ELECTRODE ASSEMBLY COMPRISING GAS DIFFUSION LAYER, AND MEMBRANE ELECTRODE ASSEMBLY-REPRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent or suppress reduction in catalytic activity by a chloride ion in a membrane electrode assembly.SOLUTION: A membrane electrode assembly comprises an electrolyte membrane, an electrode catalyst layer having a nanostructure element including a needle-like microstructure carrier whisker supporting a needle-like nanoscopic catalyst particle, and a gas diffusion layer including a nitrogen-containing compound having an anion exchange group; and a membrane electrode assembly-reproducing method are provided.