NOVELTY - The non-planar and microchannel phosphoric acid fuel cell (1200) comprises an array of fuel and oxidant elongated microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, fuel electrodes (1202) formed along the microchannels, air electrodes (1203) formed along the microchannels, a reforming catalyst inside the microchannels having the fuel electrodes, a phosphoric acid electrolyte and metallic nanoparticles in the porous electrolyte support structure, and carbon nanostructures in pores of the porous electrolyte support structure.    USE - The non-planar and microchannel phosphoric acid fuel cell is useful as portable or fixed power sources for military operations and automotive applications.    ADVANTAGE - The non-planar and microchannel phosphoric acid fuel cell can be effectively manufactured with high power density and optimum performance, and can be operated in high radiation environments at convenient operating temperatures for methanol reforming.    DETAILED DESCRIPTION - The non-planar and microchannel phosphoric acid fuel cell (1200) comprises an array of fuel and oxidant elongated microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, fuel electrodes (1202) formed along the microchannels, air electrodes (1203) formed along the microchannels, a reforming catalyst inside the microchannels having the fuel electrodes, a phosphoric acid electrolyte and metallic nanoparticles in the porous electrolyte support structure, carbon nanostructures in pores of the porous electrolyte support structure, a mechanism for causing reactants in immediately adjacent to microchannels to flow in opposite directions for inducing counterflow heat exchange, and a proton-conducting or ion-conducting electrolyte in the porous electrolyte support structure. The porous electrolyte support structure comprise a material consisting of silicon, a metal, glass, polymer, ceramic, plastic, epoxy resin, and a metal oxide. The microchannels have longitudinal axes that are parallel. An INDEPENDENT CLAIM is included for a method of making a phosphoric acid fuel cell.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a non-planar phosphoric acid fuel cell.    Phosphoric acid fuel cell (1200)    Porous electrolyte support (1201)    Fuel electrode (1202)    Air electrode (1203)    Upper microchannel. (1204)