▎ 摘　　要

NOVELTY - A gas diffusion layer for fuel cells comprises a carbon substrate; and a microporous layer which is formed on the carbon substrate and comprises first carbon particles having a partially graphitized structure and a water-repellent binder resin binding the first carbon particles, and a cerium compound, a nitrogen-doped cerium compound, and/or nitrogen-doped second carbon particles having a partially graphitized or non-graphite structure, as a radical scavenger capable of removing hydrogen peroxide generated at a fuel cell open circuit potential or a higher potential. USE - A gas diffusion layer for a membrane electrode assembly used for fuel cells (all claimmed). ADVANTAGE - The gas diffusion layer for fuel cells with extended lifetime may maintain fuel cell performance for a long time by delaying or suppressing deterioration of a microporous layer, catalyst supports, and an electrolyte membrane. The membrane electrode assembly including the diffusion layer have improved cell performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a membrane electrode assembly for fuel cells, comprising a gas diffusion layer, where the gas diffusion layer comprises a carbon substrate; and a microporous layer formed on the carbon substrate. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the various graphitic, pyridinic and pyrrolic nitrogen functional groups introduced into nitrogen-doped carbon particles having a partially graphitized structure.