Patent ID: 8795919

Claim:
A fuel cell layer, comprising: a composite layer having a first surface and a second surface, the composite layer comprising a plurality of interconnectors; and a plurality of ion conducting components, positioned between the interconnectors; a first plurality of electrode coatings disposed on the first surface to form anodes; and a second plurality of electrode coatings disposed on the second surface to form cathodes, each of the first and second plurality of electrode coatings in ionic contact with one of the ion conducting components and in electrical contact with one of the interconnectors, at least one of the interconnectors comprising a first gas-impermeable interface region and a second gas-impermeable interface region each comprising a dielectric material independently comprising glass fibers, an additive, or a combination thereof, wherein the additive is at least one of laser-scattering and laser-absorbing, wherein at least one of the glass fibers and the additive are configured to at least partially block the transmission of a laser beam through the dielectric material, wherein the first gas-impermeable interface region and the second gas-impermeable interface region each has a first surface and a second surface, the first surface in contact with one of the ion conducting components; and a third gas-impermeable region that is electrically conductive having two surfaces and a length parallel to the two surfaces, one of the surfaces disposed adjacent to the second surface of the first and second gas-impermeable interface regions; wherein the interconnector and the third gas-impermeable region electrically connect the anode of one fuel cell to the cathode of an adjacent fuel cell.