NOVELTY - The fibrous article (100) comprises a metal-containing core (102), a metal-containing first protective layer (104) bonded to the core by solid-phase bonding and having a different material composition than the core, surface channels extending along directions that are parallel to a longitudinal axis of the article, and metal-containing conductors (108) contained in the first protective layer, isolated from contact with the surface channels and having a different material composition than the first protective layer, where the core is isolated from contacting the surface channels.    USE - The fibrous article is useful in a channelized current collector of a microfibrous fuel cell (all claimed).    ADVANTAGE - The fibrous article can be economically manufactured with high corrosion resistance and long service life thus providing corrosion-resistant current collectors with high durability and enhancing the reliability of the microfibrous fuel cells.    DETAILED DESCRIPTION - The fibrous article (100) comprises a metal-containing core (102), a metal-containing first protective layer (104) bonded to the core by solid-phase bonding and having a different material composition than the core, surface channels extending along directions that are parallel to a longitudinal axis of the article, metal-containing conductors (108) contained in the first protective layer, isolated from contact with the surface channels and having a different material composition than the first protective layer, where the core is isolated from contacting the surface channels, and a metal-containing second protective layer (106) bonded to the first protective layer. The metal-containing conductor is solid phase bonded to the first protective layer. The metal-containing conductor is encased in the first protective layer and isolated from contact with the core, and has the same material composition as the core. The fibrous article has a cross-sectional outer diameter of 10 microns to 5 millimeters. INDEPENDENT CLAIMS are included for:    (1) a microfibrous fuel cell; and    (2) a channelized current collector structure for a fuel cell.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of a three-layer fibrous article.    Fibrous article (100)    Metal-containing core (102)    Metal-containing first protective layer (104)    Metal-containing second protective layer (106)    Metal-containing conductors. (108)