NOVELTY - Producing (M1) a segmented-in-series fuel cell, comprises: providing an inkjet printer; applying at least one first layer to a substrate with the inkjet printer; and applying at least one additional layer to first layer with inkjet printer. A material for the first layer is different from a material for the additional layer. The material for the first layer comprises at least one of an anode material or an interconnection material. The material for the additional layer comprises at least one of an electrolyte material, anode material, a interconnect material or a cathode material.    USE - The methods are useful for: producing a segmented-in-series fuel cell; and preparing an ink for use in an inkjet printer to fabricate segregated-in-series fuel cell (all claimed).    ADVANTAGE - The method: enables low-cost fabrication of a high-voltage, low-current electrical generator without use of high-cost metallic interconnects, and thus it is cost effective; and enables segmented-in-series solid-oxide fuel cell fabrication on the scale of tens of microns under ambient environmental conditions.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) preparing (M2) an ink for use in an inkjet printer, comprising dispersing a powder in a dispersant and a hyperdispersant, where the powder comprises at least one of nickel(II) oxide, yttria-stabilized zirconia, lanthanum-doped strontium titanate, strontium-doped lanthanum manganate, lanthanum strontium cobalt ferrite, lanthanum cobaltite, cerium oxide and/or gadolinium doped ceria; and    (2) the ink comprising: the powder comprising at least one of nickel(II) oxide, yttria-stabilized zirconia, lanthanum-doped strontium titanate, strontium-doped lanthanum manganate, lanthanum strontium cobalt ferrite, lanthanum cobaltite, cerium oxide and/or gadolinium doped ceria; the dispersant; and the hyperdispersant.    DESCRIPTION OF DRAWING(S) - The figure illustrates a schematic representation of a segmented-in-series solid-oxide fuel cell.