Fuel cell

摘要

A fuel cell includes: a membrane-electrode assembly in which electrode catalyst layers are formed on two sides of an electrolyte membrane; and a cerium-containing layer that is formed at an outer side of at least one of the two surfaces of the membrane-electrode assembly, and that contains a cerium-containing oxide in an amount that is greater than 5 wt % and less than or equal to 30 wt % where 100 wt % is an amount of solid components except the cerium-containing oxide which form the cerium-containing layer.

主权项

1. A fuel cell comprising:
a membrane-electrode assembly in which electrode catalyst layers are formed on two surfaces of an electrolyte membrane; and a gas diffusion layer that is provided at an outer side of at least one of the electrode catalyst layers, is made of an electroconductive porous member, and includes a cerium-containing layer, wherein the cerium-containing layer is formed on at least one of the electrode catalyst layers and contains cerium-containing oxide particles, carbon particles and water-repellent material particles, an amount of the cerium-containing oxide particles is greater than 5 wt % and less than or equal to 30 wt % where 100 wt % is an amount of solid components except the cerium-containing oxide particles which form the cerium-containing layer, the cerium-containing oxide particles have a higher hydrophilicity than the electrolyte membrane, and the cerium-containing oxide particles have a specific surface area of 50 m2/g or more.