Gas diffusion layer for fuel cell applications and unit cell of fuel cell having the same and fuel cell stack having the same

摘要

The present invention relates to a gas diffusion layer for a fuel cell and a fuel cell unit cell and a fuel cell stack including the same, wherein the durability is increased while minimizing the effect of flooding by controlling the amount of antioxidant added to the microporous layer forming the gas diffusion layer. A gas diffusion layer for a fuel cell according to an embodiment of the present invention is a gas diffusion layer for a fuel cell disposed between a membrane electrode assembly (MEA) and a separator, comprising: a base material made of carbon fiber; It consists of a microporous layer (MPL) formed by coating or impregnating carbon-based particles, polytetrafluoroethylene (PTFE) and cerium oxide (CeO ₂ ) on the substrate, and the content of the cerium oxide is the content of the carbon-based particles It is characterized in that it is 5.8 ~ 7.2 wt% compared to that.