NOVELTY - The catalyst layer comprises a multilayered structure with increasing catalyst density towards the final densest layer which acts as a pore plugger that closes catalyst gate structures and reduces fuel and water diffusion from the anode to the cathode. In an alternative embodiment, a pore blocking layer of fine particles is also applied to each catalyst layer.    USE - In direct-feed organic fuel cells.    ADVANTAGE - The structure reduces fuel and water diffusion from the anode to the cathode, improves performance and reduces fuel crossover.    DETAILED DESCRIPTION - A membrane electrode assembly (A) for direct feed fuel cells comprising:    (a) a solid electrolyte membrane with a first and second backing substrate on its opposite surfaces forming first and second electrode-membrane interfaces;    (b) an anode formed on the first membrane surface with a first multilayer catalyst formation with non-uniform densities applied on the first backing substrate; and    (c) a cathode having a second multilayer catalyst formation with non-uniform densities applied on the second backing substrate.    INDEPENDENT CLAIMS are also included for the following:    (a) a method (B) of forming the electrode in which the catalyst mixture which includes a metal powder and a water-repelling material is applied to the backing substrate and sintered. An ionomer layer is then applied and then a denser catalyst layer is applied followed by a densest catalyst layer;    (b) method (C) in which method (B) is followed, but the catalyst layers are formed on the membrane using catalyst inks and a second final densest catalyst layer is formed on the first. The membrane is then placed between the backing substrates and bonded to them to form the electrode assembly;    (c) the assembly as in (A) in which the first and second backing substrates have different pore structures and inert pore blocking layers are applied to the substrates; and    (d) the method of fabricating the assembly as in (B) and (C) in which the pore blocking layer is applied to each catalyst layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a multilayer catalyst structure including: (110) anode, (120) solid electrolyte membrane, (130) cathode, (145) first membrane surface, (150) second membrane surface, (210) multilayer catalyst, (220) densest catalyst layer, (230) electrode-membrane interface, (240) electrode backing substrate, (250) multilayer catalyst, (260) densest catalyst layer, (270) electrode-membrane interface, (280) electrode backing substrate.