The electrode for fuel cells 10 includes the second region 14 composed of only the binder resin, the first region 13 composed of the binder resin and the catalyst, and the binder resin and the catalyst, so that the interface between the binder resin and the catalyst can be created in the form of a layer.

Meanwhile, the electrode for fuel cells 10 may further include an electrode substrate (not shown), if necessary. The electrode substrate functions to support the electrode 10 and to enable a fuel and an oxidizing agent to easily access the catalyst layer 12 by diffusing the fuel and the oxidizing agent into the catalyst layer 12.

The electrode substrate may be carbon paper, carbon cloth, carbon felt, carbon fiber or a combination thereof and preferably is carbon fiber.

The electrode substrate may include pores. In this regard, by controlling the size and porosity of the pores, functions of the fuel cell can be improved. Specifically, the electrode substrate may include mean pores with a diameter of 20 to 40 μm at a porosity of 30 to 80 vol % with respect to the total volume of the electrode substrate. Specifically, the electrode substrate may include mean pores with a diameter of 20 to 30 μm at a porosity of 50 to 80 vol % with respect to the total volume of the electrode substrate.

In addition, if necessary, the electrode for fuel cells 10 may further include a microporous layer (not shown) in order to improve diffusion of reactants.

The microporous layer may have a thickness of 3 to 80 μm, specifically a thickness of 10 to 70 μm.