Patent ID: 7759019

Claim:
A liquid fuel cell comprising: a cathode including a diffusion layer and a porous catalyst layer provided on the diffusion layer, the porous catalyst layer having a thickness not greater than 60 μm, a porosity of 30 to 70% and a pore diameter distribution including a peak in a range of 20 to 200 nm of a pore diameter, a volume of pores having a diameter of 20 to 200 nm being not less than 50% of a pore volume of the porous catalyst layer, the porous catalyst layer containing a supported catalyst which comprises 10 to 30% by weight of a fibrous supported catalyst and 70 to 90% by weight of a granular supported catalyst, the fibrous supported catalyst including a carbon nanofiber having a herringbone structure or a platelet structure, and the granular supported catalyst including a carbon black having 200 to 600 mL/100 g of a dibutyl phthalate (DBP) absorption value; an anode; and a proton conductive membrane provided between the cathode and the anode.