NOVELTY - Fuel cell catalyst layer comprises: (a) first spaced apart strands extending longitudinally in a first direction; (b) second spaced apart strands extending longitudinally in a second direction, where the first and second spaced apart strands collectively define openings bounded by an adjacent pair of the first spaced apart strands and an adjacent pair of the second spaced apart strands; (c) a number of wires formed on one of the first and second spaced apart strands; and (d) a catalyst contacting a portion of the number of wires.    USE - Used as a fuel cell catalyst layer.    ADVANTAGE - Catalyst dissolution common to conventional catalyst nanoparticles can be effectively reduced through the implementation of continuum film of metallic catalyst. Degradation due to particle dissolution may be removed since catalyst metals presented as a continuum film is intrinsically more stable than conventional catalyst nanoparticles due to the lower surface energy associated with films. Catalyst agglomeration inherent in conventional carbon-supported catalyst nanoparticles can be effectively reduced. The catalyst layer based on metallic thin film does not contain particles and the surface properties of thin films more resemble that of the bulk catalyst than nanoparticles.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a fuel cell electrode assembly comprising: (a) a substrate; and (b) a catalyst layer supported on the substrate, where the catalyst layer is configured to include first spaced apart strands extending longitudinally in a first direction, and second spaced apart strands extending longitudinally in a second direction, where the first and second spaced apart strands collectively define openings bounded by an adjacent pair of the first spaced apart strands and an adjacent pair of the second spaced apart strands, and the catalyst is provided with 2-10 atomic layers of noble metal atoms in a thickness direction.    DESCRIPTION OF DRAWING(S) - The drawing shows an enlarged view of the catalyst layer for use in fuel cell electrode assembly.    Catalyst layer (112)    Interconnected network (200)    First spaced apart strand (202)    Second spaced apart strand (204)    Openings (206)    Catalyst (208)