Patent ID: 7892701

Claim:
A fuel cell comprising: an anode, into which an aqueous methanol solution is introduced as fuel, comprising a current collector and a catalyst layer formed on the current collector; a cathode, into which an oxidizing agent is introduced, comprising a current collector and a catalyst layer formed on the current collector; and an electrolyte membrane interposed between the catalyst layer of the anode and the catalyst layer of the cathode, wherein the catalyst layer of at least one of the anode and the cathode contains carbon particles having pores on the surface thereof, catalyst microparticles supported by these carbon particles, a perfluoroalkylsulfonic acid polymer and a high-molecular weight polymer fixed to the surface of the carbon particles, the high-molecular weight polymer being represented by the following formula (I), and the catalyst microparticles are finer than the carbon particles, where R1 and R2, which may be the same or different, respectively represent an alkyl group having 1 to 20 carbon atoms or an alkoxy group having 1 to 20 carbon atoms, and m denotes an integer of 200 to 2500.