Patent ID: 7494741

Claim:
A fuel cell, comprising: a first substrate provided with a gas flow path to supply a first reaction gas; a first electron collection layer formed on the first substrate; a first gas diffusion layer formed on the first electron collection layer; a first reaction layer formed on the first gas diffusion layer; an electrolyte film formed on the first reaction layer; a second reaction layer formed on the electrolyte film; a second gas diffusion layer formed on the second reaction layer; a second electron collection layer formed on the second gas diffusion layer; and a second substrate provided with a second gas flow path to supply a second reaction gas, at least one of the first electron collection layer and the second electron collection layer constructed in porous form by stacking conductive material particles, the conductive material particles having at least one of a particle shape, an elliptical shape, and a cylindrical shape; and the at least one of the first electron collection layer and the second electron collection layer including a plurality of rows, with the conductive material particles in each row separated by gaps, a conductive material particle in one row being in contact with a conductive material particles in an adjacent row.